JP5485783B2

JP5485783B2 - Water tank roof refurbishment structure and water tank roof refurbishment method

Info

Publication number: JP5485783B2
Application number: JP2010108595A
Authority: JP
Inventors: 茂昌堅田
Original assignee: Abe Nikko Kogyo Co Ltd
Current assignee: Abe Nikko Kogyo Co Ltd
Priority date: 2010-05-10
Filing date: 2010-05-10
Publication date: 2014-05-07
Anticipated expiration: 2030-05-10
Also published as: JP2011236634A

Description

この発明は、上水用タンクの屋根改修構造、および上水用タンクの屋根改修方法に関するものである。 The present invention relates to a roof repair structure for a water tank and a roof repair method for a water tank.

従来、上水が貯留される上水用のタンクにおいて、そのタンクのコンクリート製の屋根が、上水に含まれる塩素イオンによって劣化することあるいは劣化が進むことを防止するために、塩素イオンに対する耐久性のある遮断膜を屋根の下方に配設して、塩素イオンを遮断する工法が知られている。ここで、屋根の下方に遮断膜を配設する工法として、例えば、図１８に示すものがあった（特許文献１参照）。この工法にあっては、タンク内の底壁１０１上に配備した移動足場１０２を使用して、屋根１０３の内側面１０３ａに取付部１０４、１０４を固着し、それら取付部１０４、１０４の先端に滑車１０５、１０５を取り付けて、吊り上げ用の索条１０６、１０６を懸架していた。そして、それら索条１０６、１０６を、膜骨及び膜材からなる遮断膜１０７に接続し、さらに、ウインチなどの巻取機１０８、１０８によって巻き取って、遮断膜１０７を吊り上げていた。その後、移動足場１０２を使用して、吊り上げられた遮断膜１０７を取付部１０４、１０４に取り付け、こうして、屋根１０３の下方に遮断膜１０７が配設された。 Conventionally, in a water tank where water is stored, in order to prevent deterioration of the concrete roof of the tank due to chlorine ions contained in the water, or progress of deterioration, durability against chlorine ions A construction method is known in which a chloride barrier film is disposed under a roof to block chlorine ions. Here, as a method of disposing a blocking film below the roof, for example, there is one shown in FIG. 18 (see Patent Document 1). In this construction method, using the moving scaffold 102 provided on the bottom wall 101 in the tank, the attachment portions 104 and 104 are fixed to the inner side surface 103a of the roof 103, and the attachment portions 104 and 104 are attached to the tips of the attachment portions 104 and 104. Pulleys 105 and 105 were attached and suspension ropes 106 and 106 were suspended. The strips 106 and 106 are connected to a barrier film 107 made of membrane bone and a membrane material, and are further wound by a winder 108 or 108 such as a winch to lift the barrier film 107. Thereafter, the suspended barrier film 107 was attached to the attachment portions 104 and 104 using the moving scaffold 102, and thus the barrier film 107 was disposed below the roof 103.

特開２００２−１２８１９０号公報JP 2002-128190 A

ところで、前記従来の工法にあっては、屋根１０３の内側面１０３ａに取付部１０４、１０４を固着する作業、取付部１０４、１０４の先端に滑車１０５、１０５を取り付けて索条１０６、１０６を懸架する作業、および、吊り上げられた遮断膜１０７を取付部１０４、１０４に取り付ける作業を、移動足場１０２を使用して行っていたため、それらの作業を行う際には、その都度、各取付部１０４、１０４の位置に合わせて、移動足場１０２を移動させる必要があり、作業性が悪かった。また、遮断膜１０７を取り付ける取付部１０４、１０４を、屋根１０３の内側面１０３ａに固着していたため、屋根１０３の内側面１０３ａの劣化の状況によっては、遮断膜１０７の取付工事が困難である場合があった。 By the way, in the conventional construction method, the attaching portions 104, 104 are fixed to the inner surface 103a of the roof 103, and the pulleys 105, 105 are attached to the tips of the attaching portions 104, 104 to suspend the ropes 106, 106. Since the moving scaffold 102 is used to perform the work to perform and the work to attach the suspended blocking film 107 to the attachment parts 104 and 104, each of the attachment parts 104, It was necessary to move the moving scaffold 102 in accordance with the position 104, and workability was poor. In addition, since the attachment portions 104 and 104 to which the shielding film 107 is attached are fixed to the inner side surface 103a of the roof 103, depending on the deterioration of the inner side surface 103a of the roof 103, it is difficult to attach the shielding film 107 was there.

この発明は、上記した従来の欠点を解決するためになされたものであり、その目的とするところは、作業性に優れた、上水用タンクの屋根改修構造、および上水用タンクの屋根改修方法を提供することにある。また、他の目的は、屋根の内側面の劣化が進んだ状態であっても、遮断膜の取付工事を行うことができる、上水用タンクの屋根改修構造、および上水用タンクの屋根改修方法を提供することにある。 The present invention has been made in order to solve the above-described conventional drawbacks. The object of the present invention is to improve the roof repair structure of a water tank and to improve the roof of the water tank. It is to provide a method. Another purpose is to install a barrier film, even when the inner surface of the roof has deteriorated, and to repair the roof of the water tank and to repair the roof of the water tank. It is to provide a method.

この発明に係る上水用タンクの屋根改修構造、および上水用タンクの屋根改修方法は、前記目的を達成するために、次の構成からなる。すなわち、
請求項１に記載の発明に係る上水用タンクの屋根改修構造は、コンクリート製の屋根を備える既設の上水用タンクの屋根改修構造である。この改修構造は、前記屋根と、その屋根と前記タンク内との間を遮断する遮断膜と、その遮断膜を支持する複数の支持材とを備える。そして、前記支持材が、前記屋根に設けた複数の貫通孔の各々を通じて、前記屋根の上面側と前記遮断膜との間に渡され、かつ、それら支持材の一方部が、前記遮断膜に固定され、また、他方部が、前記屋根の上面に設けた固定部に固定されて、前記遮断膜が前記屋根の下方に配設されている。 The roof repair structure for a water tank and the roof repair method for a water tank according to the present invention have the following configurations in order to achieve the object. That is,
The roof repair structure for a water tank according to the first aspect of the present invention is a roof repair structure for an existing water tank having a concrete roof. The repair structure includes the roof, a blocking film that blocks between the roof and the tank, and a plurality of support members that support the blocking film. And the said support material is passed between each of the upper surface side of the said roof and the said shielding film through each of the several through-hole provided in the said roof, And one part of these support materials is the said shielding film. The other part is fixed to a fixing part provided on the upper surface of the roof, and the blocking film is disposed below the roof.

この改修構造にあっては、遮断膜を支持する複数の支持材が、屋根に設けた複数の貫通孔の各々を通じて、屋根の上面側と遮断膜との間に渡され、かつ、それら支持材は、一方部が、遮断膜に固定され、また、他方部が、屋根の上面に設けた固定部に固定される。したがって、支持材の他方部を固定部に固定する作業を、貫通孔を通じて、屋根上で行うことができ、作業性に優れる。また、支持材の他方部が固定される固定部が、屋根の上面に設けられることから、屋根の内側面の劣化が進んだ状態であっても、遮断膜の取付工事を行うことができる。 In this modified structure, a plurality of support members that support the barrier film are passed between the upper surface side of the roof and the barrier film through each of the plurality of through holes provided in the roof, and these support members One part is fixed to the barrier film, and the other part is fixed to a fixing part provided on the upper surface of the roof. Therefore, the operation of fixing the other portion of the support member to the fixing portion can be performed on the roof through the through hole, and the workability is excellent. Moreover, since the fixing | fixed part to which the other part of a support material is fixed is provided in the upper surface of a roof, even if the deterioration of the inner surface of a roof has advanced, the installation work of a barrier film can be performed.

また、請求項２に記載の発明に係る上水用タンクの屋根改修構造のように、請求項１に記載の改修構造において、前記支持材が、前記貫通孔の各々を通じて、前記貫通孔から下方に直状に延びるようにして、前記屋根の上面側と前記遮断膜との間に渡されていてもよい。 Moreover, in the repair structure of Claim 1, like the roof repair structure of the water tank according to the invention of Claim 2, the said support material is downward from the said through-hole through each of the said through-holes. It may be passed between the upper surface side of the roof and the barrier film so as to extend straight.

また、請求項３に記載の発明に係る上水用タンクの屋根改修構造のように、請求項１または２に記載の改修構造において、前記固定部は、前記貫通孔を覆うように前記屋根の上面に配備された孔付きのプレート部材と、そのプレート部材に覆い被さるように前記屋根の上面に配備された覆い部材とを備え、かつ、前記支持材の他方部は、前記プレート部材の孔に挿通されるとともに、前記覆い部材内に収まるようにして、前記プレート部材に固定されていてもよい。こうすることで、支持材の他方部およびその他方部が固定されたプレート部材を、風雨などから保護することができる。 Moreover, in the repair structure of Claim 1 or 2 like the roof repair structure of the tap water tank which concerns on invention of Claim 3, the said fixing | fixed part of the said roof covers the said through-hole. A plate member with a hole disposed on the upper surface, and a cover member disposed on the upper surface of the roof so as to cover the plate member, and the other part of the support member is formed in the hole of the plate member. While being inserted, it may be fixed to the plate member so as to be accommodated in the covering member. By doing so, the plate member to which the other part and the other part of the support member are fixed can be protected from wind and rain.

また、請求項４に記載の発明に係る上水用タンクの屋根改修構造のように、請求項１または２に記載の改修構造において、前記固定部は、前記貫通孔に臨むように前記屋根の上面に配備された棒状部材を備え、かつ、前記棒状部材と、その棒状部材に固定された前記支持材の他方部とに、コンクリートが巻き立てられていてもよい。こうすることで、支持材の他方部およびその他方部が固定された棒状部材を、風雨などから保護するとともに、それら支持材の他方部と棒状部材とをより強固に固定することができる。 Moreover, in the repair structure of Claim 1 or 2 like the roof repair structure of the tap water tank which concerns on invention of Claim 4, the said fixing | fixed part of the said roof faces the said through-hole. Concrete may be wound around the rod-shaped member provided on the upper surface and the other portion of the support member fixed to the rod-shaped member. By doing so, the rod-like member to which the other portion and the other portion of the support member are fixed can be protected from wind and rain, and the other portion of the support member and the rod-like member can be more firmly fixed.

また、請求項５に記載の発明に係る上水用タンクの屋根改修方法は、コンクリート製の屋根を備える既設の上水用タンクの屋根改修方法である。この改修方法にあっては、前記タンク内に、前記屋根と前記タンク内との間を遮断する遮断膜を搬入する。次に、前記遮断膜を支持する支持材を一端側に形成するまたは備える複数の長材を、前記屋根に設けた複数の貫通孔の各々を通じて、前記屋根の上面側から前記タンク内に垂下させるとともに、前記支持材の一方部を、前記タンク内に搬入した前記遮断膜に固定する。その後、前記長材の前記一端側を、前記貫通孔の各々を通じて引き上げることで、前記遮断膜を吊り上げるとともに、前記支持材を、前記貫通孔の各々を通じて、前記屋根の上面側と前記遮断膜との間に渡す。そして、それら支持材の他方部を、前記屋根の上面に設けた固定部に固定して、前記遮断膜を前記屋根の下方に配設する。 A roof repair method for a water tank according to the invention described in claim 5 is a roof repair method for an existing water tank having a concrete roof. In this refurbishing method, a blocking film for blocking between the roof and the tank is carried into the tank. Next, a plurality of long members that form or have a support material that supports the barrier film on one end side are suspended from the upper surface side of the roof into the tank through each of the plurality of through holes provided in the roof. At the same time, one part of the support member is fixed to the barrier film carried into the tank. Thereafter, the one end side of the long member is pulled up through each of the through holes to lift the blocking film, and the support member is inserted into each of the through holes from the upper surface side of the roof and the blocking film. Pass between. And the other part of these support materials is fixed to the fixed part provided in the upper surface of the said roof, and the said shielding film is arrange | positioned under the said roof.

この改修方法にあっては、遮断膜を支持する支持材を一端側に形成するまたは備える複数の長材を、屋根に設けた複数の貫通孔の各々を通じて、屋根の上面側からタンク内に垂下させるとともに、前記支持材の一方部を、タンク内に搬入した遮断膜に固定する。その後、それら長材の一端側を、複数の貫通孔の各々を通じて引き上げることで、遮断膜を吊り上げるとともに、支持材を、複数の貫通孔の各々を通じて、屋根の上面側と遮断膜との間に渡す。さらに、それら支持材の他方部を、屋根の上面に設けた固定部に固定する。したがって、支持材の他方部を固定部に固定する作業を、貫通孔を通じて、屋根上で行うことができ、作業性に優れる。また、支持材の他方部が固定される固定部が、屋根の上面に設けられることから、屋根の内側面の劣化が進んだ状態であっても、遮断膜の取付工事を行うことができる。 In this renovation method, a plurality of long members that are formed or provided with a support material that supports the barrier film on one end side are suspended from the upper surface side of the roof into the tank through each of the plurality of through holes provided in the roof. At the same time, one part of the support member is fixed to the barrier film carried into the tank. Thereafter, the barrier film is lifted by pulling up one end side of the long members through each of the plurality of through holes, and the support member is interposed between the upper surface side of the roof and the barrier film through each of the plurality of through holes. hand over. Furthermore, the other part of these supporting members is fixed to a fixing part provided on the upper surface of the roof. Therefore, the operation of fixing the other portion of the support member to the fixing portion can be performed on the roof through the through hole, and the workability is excellent. Moreover, since the fixing | fixed part to which the other part of a support material is fixed is provided in the upper surface of a roof, even if the deterioration of the inner surface of a roof has advanced, the installation work of a barrier film can be performed.

また、請求項６に記載の発明に係る上水用タンクの屋根改修方法は、コンクリート製の屋根を備える既設の上水用タンクの屋根改修方法である。この改修方法にあっては、前記タンク内に、前記屋根と前記タンク内との間を遮断する遮断膜を搬入する。次に、複数の長材を、前記屋根に設けた複数の貫通孔の各々を通じて、前記屋根の上面側から前記タンク内に垂下させるとともに、それら長材の一端側と、前記タンク内に搬入した前記遮断膜に一方部が固定された、前記遮断膜を支持する支持材とをつなぐ。その後、前記長材の前記一端側を、前記貫通孔の各々を通じて引き上げることで、前記遮断膜を吊り上げるとともに、前記支持材を、前記貫通孔の各々を通じて、前記屋根の上面側と前記遮断膜との間に渡す。そして、それら支持材の他方部を、前記屋根の上面に設けた固定部に固定して、前記遮断膜を前記屋根の下方に配設する。 A roof repair method for a water tank according to the invention described in claim 6 is a roof repair method for an existing water tank having a concrete roof. In this refurbishing method, a blocking film for blocking between the roof and the tank is carried into the tank. Next, a plurality of long members are dropped into the tank from the upper surface side of the roof through each of the plurality of through holes provided in the roof, and are loaded into the tank with one end side of the long members. A support member that supports the barrier film, one part of which is fixed to the barrier film, is connected. Thereafter, the one end side of the long member is pulled up through each of the through holes to lift the blocking film, and the support member is inserted into each of the through holes from the upper surface side of the roof and the blocking film. Pass between. And the other part of these support materials is fixed to the fixed part provided in the upper surface of the said roof, and the said shielding film is arrange | positioned under the said roof.

この改修方法にあっては、複数の長材を、屋根に設けた複数の貫通孔の各々を通じて、屋根の上面側からタンク内に垂下させるとともに、それら長材の一端側と、タンク内に搬入した遮断膜に一方部が固定された、遮断膜を支持する支持材とをつなぐ。その後、それら長材の一端側を、複数の貫通孔の各々を通じて引き上げることで、遮断膜を吊り上げるとともに、支持材を、複数の貫通孔の各々を通じて、屋根の上面側と遮断膜との間に渡す。さらに、それら支持材の他方部を、屋根の上面に設けた固定部に固定する。したがって、支持材の他方部を固定部に固定する作業を、貫通孔を通じて、屋根上で行うことができ、作業性に優れる。また、支持材の他方部が固定される固定部が、屋根の上面に設けられることから、屋根の内側面の劣化が進んだ状態であっても、遮断膜の取付工事を行うことができる。 In this repair method, a plurality of long members are dropped into the tank from the upper surface side of the roof through each of a plurality of through holes provided in the roof, and are loaded into one end side of the long members and the tank. The support member supporting one of the barrier films, one of which is fixed to the barrier film, is connected. Thereafter, the barrier film is lifted by pulling up one end side of the long members through each of the plurality of through holes, and the support member is interposed between the upper surface side of the roof and the barrier film through each of the plurality of through holes. hand over. Furthermore, the other part of these supporting members is fixed to a fixing part provided on the upper surface of the roof. Therefore, the operation of fixing the other portion of the support member to the fixing portion can be performed on the roof through the through hole, and the workability is excellent. Moreover, since the fixing | fixed part to which the other part of a support material is fixed is provided in the upper surface of a roof, even if the deterioration of the inner surface of a roof has advanced, the installation work of a barrier film can be performed.

また、請求項７に記載の発明に係る上水用タンクの屋根改修方法のように、請求項５または６に記載の改修方法において、前記遮断膜を配設するにあたって、前記支持材を、前記貫通孔の各々を通じて、前記貫通孔から下方に直状に延びるようにして、前記屋根の上面側と前記遮断膜との間に渡してもよい。 Further, in the refurbishing method according to claim 5 or 6, as in the roof refurbishing method for a water tank according to the invention of claim 7, the disposing the blocking film, You may pass through between each of the through-holes between the upper surface side of the roof and the blocking film so as to extend straight downward from the through-holes.

この発明に係る上水用タンクの屋根改修構造、および上水用タンクの屋根改修方法によれば、遮断膜を支持する支持材の他方部を固定部に固定する作業を、貫通孔を通じて、屋根上で行うことができ、作業性に優れる。また、支持材の他方部が固定される固定部が、屋根の上面に設けられることから、屋根の内側面の劣化が進んだ状態であっても、遮断膜の取付工事を行うことができる。 According to the roof repair structure of the water tank according to the present invention and the roof repair method of the water tank, the operation of fixing the other part of the support material supporting the barrier film to the fixing part is performed through the through hole. It can be done above and has excellent workability. Moreover, since the fixing | fixed part to which the other part of a support material is fixed is provided in the upper surface of a roof, even if the deterioration of the inner surface of a roof has advanced, the installation work of a barrier film can be performed.

この発明の第一の実施の形態の、屋根改修構造を示す模式図である。It is a schematic diagram which shows the roof repair structure of 1st embodiment of this invention. 同じく、要部拡大図である。Similarly, it is a principal part enlarged view. 同じく、模式的な縮小平面図である。Similarly, it is a schematic reduced plan view. 同じく、支持材および固定部を示す模式的な一部破断拡大斜視図である。Similarly, it is a typical partially broken enlarged perspective view showing a support member and a fixing part. 同じく、図２におけるＡ部拡大図である。Similarly, it is the A section enlarged view in FIG. 同じく、図２におけるＢ部拡大図である。Similarly, it is the B section enlarged view in FIG. 同じく、屋根改修方法において、タンク内に遮断膜を搬入した状態を示す模式図である。Similarly, in the roof renovation method, it is a schematic diagram showing a state in which a barrier film is carried into a tank. 同じく、複数の長材をタンク内に垂下させた状態を示す模式図である。Similarly, it is a schematic diagram showing a state in which a plurality of long members are suspended in the tank. 同じく、遮断膜を吊り上げた状態を示す模式図である。Similarly, it is a schematic diagram showing a state in which the barrier film is suspended. この発明の第二の実施の形態の、図４相当図である。FIG. 5 is a view corresponding to FIG. 4 of a second embodiment of the present invention. この発明の第三の実施の形態の、図４相当図である。FIG. 5 is a view corresponding to FIG. 4 of a third embodiment of the present invention. この発明の第四の実施の形態の、図４相当図である。FIG. 6 is a view corresponding to FIG. 4 of a fourth embodiment of the present invention. この発明の第五の実施の形態の、図４相当図である。FIG. 6 is a view corresponding to FIG. 4 of a fifth embodiment of the present invention. 同じく、図８相当図である。Similarly, it is a figure corresponding to FIG. この発明の第六の実施の形態の、図４相当図である。FIG. 10 is a view corresponding to FIG. 4 of a sixth embodiment of the present invention. この発明の第七の実施の形態の、図４相当図である。FIG. 10 is a view corresponding to FIG. 4 of a seventh embodiment of the present invention. 遮断膜の周端部分の取付固定に係る変形例を示す、図５相当図である。FIG. 6 is a view corresponding to FIG. 5, showing a modification example related to mounting and fixing of the peripheral end portion of the barrier film. 従来の屋根改修構造および屋根改修方法を示す図である。It is a figure which shows the conventional roof repair structure and the roof repair method.

以下、この発明に係る上水用タンクの屋根改修構造、および上水用タンクの屋根改修方法を実施するための形態を図面に基づいて説明する。 EMBODIMENT OF THE INVENTION Hereinafter, the form for implementing the roof repair structure of the tank for waterworks and the roof repair method of the tank for waterworks which concerns on this invention is demonstrated based on drawing.

図１〜図９は、本発明の第一の実施の形態を示す。図中符号１は、既設の上水用タンクを示し、同上水用タンク１は、コンクリート製の屋根２を備える。３は、タンク１の屋根改修構造を示す。なお、図１、図２および図７〜図９においては、便宜上、ハッチングを省略してある。 1 to 9 show a first embodiment of the present invention. Reference numeral 1 in the figure denotes an existing water tank, and the water tank 1 includes a concrete roof 2. 3 shows the roof repair structure of the tank 1. In FIG. 1, FIG. 2, and FIG. 7 to FIG. 9, hatching is omitted for convenience.

この屋根改修構造３は、前記屋根２としてのドーム屋根２１と、そのドーム屋根２１とタンク１内との間を遮断する遮断膜４と、その遮断膜４を支持する複数の支持材５、５とを備える。そして、支持材５、５が、ドーム屋根２１に設けた複数の貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡され、かつ、それら支持材５、５の一方部５ａ、５ａが、遮断膜４に固定され、また、他方部５ｂ、５ｂが、ドーム屋根２１の上面２１ａに設けた固定部７に固定されて、遮断膜４がドーム屋根２１の下方に配設されている。図示実施の形態においては、支持材５、５が、貫通孔６、６の各々を通じて、貫通孔６、６から下方に直状に延びるようにして、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡されている。 The roof refurbishment structure 3 includes a dome roof 21 as the roof 2, a blocking film 4 that blocks between the dome roof 21 and the tank 1, and a plurality of support members 5, 5 that support the blocking film 4. With. And the support materials 5 and 5 are passed between the upper surface 21a side of the dome roof 21 and the shielding film 4 through each of the plurality of through holes 6 and 6 provided in the dome roof 21, and these support materials 5 5 is fixed to the blocking film 4, and the other parts 5 b and 5 b are fixed to the fixing part 7 provided on the upper surface 21 a of the dome roof 21, so that the blocking film 4 is fixed to the dome roof 21. It is arrange | positioned below. In the illustrated embodiment, the support members 5 and 5 extend downward from the through holes 6 and 6 straightly through the through holes 6 and 6, respectively, so that the upper surface 21 a side of the dome roof 21 and the blocking film 4. And is passed between.

具体的には、固定部７は、貫通孔６を覆うようにドーム屋根２１の上面２１ａに配備された孔付きのプレート部材７ａと、そのプレート部材７ａに覆い被さるようにドーム屋根２１の上面２１ａに配備された、覆い部材としての保護キャップ７ｂとを備える（図４参照）。そして、支持材５の他方部５ｂは、貫通孔６およびプレート部材７ａの孔７ｃに挿通されるとともに、保護キャップ７ｂ内に収まるようにして、プレート部材７ａに固定されている。詳細には、支持材５は、例えば、紐あるいはロープからなり、その他方部５ｂには、幾重に絡まるようにして、結び玉５ｃが形成されている。そして、この結び玉５ｃが、接着剤等によって固められるようにして、プレート部材７ａの上面７ｄに固着され、さらに、そのプレート部材７ａが、接着剤等によって、ドーム屋根２１の上面２１ａに固着されている。また、保護キャップ７ｂの下端部周囲には、その保護キャップ７ｂとドーム屋根２１の上面２１ａとの境目の隙間を塞ぐように、コーキング７ｅ処理されている。 Specifically, the fixing portion 7 includes a plate member 7a with a hole disposed on the upper surface 21a of the dome roof 21 so as to cover the through hole 6, and an upper surface 21a of the dome roof 21 so as to cover the plate member 7a. And a protective cap 7b as a covering member (see FIG. 4). The other portion 5b of the support member 5 is inserted into the through hole 6 and the hole 7c of the plate member 7a, and is fixed to the plate member 7a so as to be accommodated in the protective cap 7b. Specifically, the support material 5 is made of, for example, a string or a rope, and the knot ball 5c is formed on the other side portion 5b so as to be entangled several times. The knot ball 5c is fixed to the upper surface 7d of the plate member 7a so as to be hardened by an adhesive or the like, and the plate member 7a is further fixed to the upper surface 21a of the dome roof 21 by an adhesive or the like. ing. Further, a caulking 7e treatment is performed around the lower end of the protective cap 7b so as to close a gap between the protective cap 7b and the upper surface 21a of the dome roof 21.

また、図示実施の形態においては、ドーム屋根２１には、環状に並ぶ貫通孔６、６群が、同心円状に複数列設けられている。そして、それら貫通孔６、６の各々に対応するように、環状に並ぶ支持材５、５群および固定部７、７群（図示実施の形態においては、プレート部材７ａ、７ａ群および保護キャップ７ｂ、７ｂ群）が同心円状に複数列配置され（図３参照）、ならびに、後述する遮断膜４の取付固定部４ａ、４ａ群（図示実施の形態においては、固定タブ４ｂ、４ｂ群）も同様に、前記貫通孔６、６の各々に対応するように、同心円状に複数列配置されることになる。また、ドーム屋根２１の中心部には、タンク１内に通じる通気孔２１ｂが備えられている。なお、符号２１ｄは、ドーム屋根２１と遮断膜４との間に、万が一、結露水が溜まったり雨水が浸入した場合に、その水を排出するための、水抜きパイプである。 In the illustrated embodiment, the dome roof 21 is provided with a plurality of concentric circular rows of through-holes 6 and 6 arranged in a ring. Then, in order to correspond to each of the through holes 6, 6, the support members 5, 5 group and the fixing portions 7, 7 group arranged in a ring (in the illustrated embodiment, the plate members 7 a, 7 a group and the protective cap 7 b , 7b group) are concentrically arranged in a plurality of rows (see FIG. 3), and the same is applied to the mounting fixing portions 4a, 4a group (in the illustrated embodiment, the fixing tabs 4b, 4b group) of the blocking film 4 described later. In addition, a plurality of rows are concentrically arranged so as to correspond to each of the through holes 6, 6. In addition, a vent hole 21 b communicating with the tank 1 is provided at the center of the dome roof 21. Reference numeral 21d denotes a drainage pipe for discharging condensed water or rainwater in the unlikely event that condensed water accumulates between the dome roof 21 and the blocking film 4.

遮断膜４は、例えば、塩化ビニル樹脂等の樹脂材料によりコーティングされた膜材等からなり、塩素イオンに対する耐久性を有している。図示実施の形態においては、遮断膜４は、ドーム屋根２１の内側面２１ｅを覆うことができるように略円形状に形成されており、その中心部分には、ドーム屋根２１の通気孔２１ｂに対応するようにして、抜き孔（図示せず）が形成されている。また、遮断膜４には、支持材５の一方部５ａが取付固定される取付固定部４ａが設けられている（図４参照）。具体的には、取付固定部４ａは、遮断膜４の、ドーム屋根２１の内側面２１ｅと対向する面（図示実施の形態においては、上面）に設けられた固定タブ４ｂからなる。この固定タブ４ｂは、遮断膜４の、ドーム屋根２１の内側面２１ｅと対向する面（図示実施の形態においては、上面）に、ミシン縫いあるいは溶着によって固着されている。そして、支持材５の一方部５ａは、固定タブ４ｂに結び止められ、さらに、接着剤等によって固められるようにして、固定タブ４ｂに取付固定されている。また、図示実施の形態においては、固定タブ４ｂ（取付固定部４ａ）は、貫通孔６の鉛直下に位置している（図１、図２および図４参照）。すなわち、支持材５は、貫通孔６を通じて、その貫通孔６から鉛直下方に直状に延びるようにして、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡されている。 The barrier film 4 is made of, for example, a film material coated with a resin material such as vinyl chloride resin, and has durability against chlorine ions. In the illustrated embodiment, the blocking film 4 is formed in a substantially circular shape so as to cover the inner surface 21 e of the dome roof 21, and corresponds to the vent hole 21 b of the dome roof 21 at the center. In this way, a hole (not shown) is formed. Further, the blocking film 4 is provided with an attachment fixing portion 4a to which the one portion 5a of the support material 5 is attached and fixed (see FIG. 4). Specifically, the mounting and fixing portion 4a includes a fixing tab 4b provided on a surface (an upper surface in the illustrated embodiment) of the blocking film 4 that faces the inner surface 21e of the dome roof 21. The fixing tab 4b is fixed to the surface (the upper surface in the illustrated embodiment) of the barrier film 4 facing the inner surface 21e of the dome roof 21 by sewing or welding. The one part 5a of the support member 5 is fastened to the fixing tab 4b, and is fixedly attached to the fixing tab 4b so as to be hardened by an adhesive or the like. In the illustrated embodiment, the fixing tab 4b (attachment fixing portion 4a) is positioned vertically below the through hole 6 (see FIGS. 1, 2 and 4). That is, the support material 5 is passed between the upper surface 21 a side of the dome roof 21 and the blocking film 4 so as to extend straight downward from the through hole 6 through the through hole 6.

また、遮断膜４の周端部分４ｃは、ドーム屋根２１の内側面２１ｅの周縁部２１ｆに固定されている（図２および図５参照）。図示実施の形態においては、遮断膜４の周端部分４ｃと、ドーム屋根２１の内側面２１ｅの周縁部２１ｆとの間には、気密性を確保するために、例えばスポンジゴム等の弾性材からなるシール材２２を介在させている。そして、遮断膜４の周端部分４ｃおよびシール材２２は、プレート２３を介してボルト２４等の固着具によって、前記周縁部２１ｆに取付固定されている。同様に、遮断膜４の前記抜き孔の周縁部分４ｄは、ドーム屋根２１の内側面２１ｅの通気孔周縁部２１ｇに固定されている（図２および図６参照）。図示実施の形態においては、遮断膜４の抜き孔の周縁部分４ｄと、ドーム屋根２１の内側面２１ｅの通気孔周縁部２１ｇとの間には、気密性を確保するために、例えばスポンジゴム等の弾性材からなるシール材２２ａを介在させている。そして、遮断膜４の抜き孔の周縁部分４ｄおよびシール材２２ａは、プレート２３ａを介してボルト２４ａ等の固着具によって、前記通気孔周縁部２１ｇに取付固定されている。 Further, the peripheral end portion 4c of the blocking film 4 is fixed to the peripheral edge portion 21f of the inner side surface 21e of the dome roof 21 (see FIGS. 2 and 5). In the illustrated embodiment, an elastic material such as sponge rubber is used between the peripheral end portion 4c of the blocking film 4 and the peripheral edge portion 21f of the inner side surface 21e of the dome roof 21 in order to ensure airtightness. A sealing material 22 is interposed. The peripheral end portion 4c of the blocking film 4 and the sealing material 22 are fixedly attached to the peripheral edge portion 21f by a fixing tool such as a bolt 24 via a plate 23. Similarly, the peripheral edge portion 4d of the hole in the blocking film 4 is fixed to the air hole peripheral edge portion 21g of the inner surface 21e of the dome roof 21 (see FIGS. 2 and 6). In the illustrated embodiment, for example, sponge rubber or the like is provided between the peripheral portion 4d of the hole in the blocking film 4 and the peripheral portion 21g of the vent hole on the inner surface 21e of the dome roof 21 in order to ensure airtightness. A sealing material 22a made of an elastic material is interposed. The peripheral portion 4d of the hole in the blocking film 4 and the sealing material 22a are fixedly attached to the peripheral portion 21g of the vent hole by a fixing tool such as a bolt 24a through the plate 23a.

また、図示実施の形態においては、遮断膜４は、ドーム屋根２１の内側面２１ｅとの間に所要の間隔をおいて、その内側面２１ｅに沿うように、しかも、垂れ気味の状態、すなわち、緊張されない状態で（詳細には、取付固定部４ａ、４ａ間、ならびに、取付固定部４ａと遮断膜４の周端部分４ｃ側および抜き孔の周縁部分４ｄ側との間において、垂れ気味の状態、すなわち、緊張されない状態で）、ドーム屋根２１の下方に配設されている。 Further, in the illustrated embodiment, the blocking film 4 is spaced from the inner side surface 21e of the dome roof 21 along the inner side surface 21e at a required interval, and is in a drooping state, that is, In a state where it is not tensioned (specifically, between the mounting and fixing portions 4a and 4a, and between the mounting and fixing portion 4a and the peripheral end portion 4c side of the blocking film 4 and the peripheral portion 4d side of the punched hole) In other words, it is disposed under the dome roof 21 in a state where it is not tensioned.

次に、タンク１の屋根改修方法を説明する。この改修方法にあっては、タンク１内に前記遮断膜４を搬入する。次に、前記支持材５を一端１０ａ側に形成するまたは備える（図示実施の形態においては、一端１０ａ側に形成する）複数の長材１０、１０を、前記複数の貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側からタンク１内に垂下させるとともに、支持材５、５の一方部５ａ、５ａを、タンク１内に搬入した遮断膜４に固定する。その後、長材１０、１０の一端１０ａ、１０ａ側を、貫通孔６、６の各々を通じて引き上げることで、遮断膜４を吊り上げるとともに、支持材５、５を、貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡す。そして、それら支持材５、５の他方部５ｂ、５ｂを、前記固定部７、７に固定して、遮断膜４をドーム屋根２１の下方に配設する。図示実施の形態においては、遮断膜４を配設するにあたって、支持材５、５を、貫通孔６、６の各々を通じて、貫通孔６、６から下方に直状に延びるようにして、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡す。 Next, a method for repairing the roof of the tank 1 will be described. In this repair method, the barrier film 4 is carried into the tank 1. Next, the support material 5 is formed or provided on the one end 10a side (in the illustrated embodiment, formed on the one end 10a side). Through the top surface 21 a side of the dome roof 21, the one part 5 a, 5 a of the support material 5, 5 is fixed to the blocking film 4 carried into the tank 1. Thereafter, the one end 10a, 10a side of the long member 10, 10 is pulled up through each of the through holes 6, 6 to lift the blocking film 4, and the support members 5, 5 are passed through each of the through holes 6, 6. It passes between the upper surface 21 a side of the dome roof 21 and the blocking film 4. Then, the other portions 5 b and 5 b of the support members 5 and 5 are fixed to the fixing portions 7 and 7, and the blocking film 4 is disposed below the dome roof 21. In the illustrated embodiment, when the barrier film 4 is disposed, the support members 5 and 5 are extended downwardly from the through holes 6 and 6 through the through holes 6 and 6, respectively, so that the dome roof is provided. 21 is passed between the upper surface 21a side of 21 and the blocking film 4.

詳細には、まず、ドーム屋根２１に、複数の貫通孔６、６を形成する（図示実施の形態においては、環状に並ぶ貫通孔６、６群を、同心円状に複数列形成する）。貫通孔６、６の形成後、遮断膜４を、ドーム屋根２１の通気孔２１ｂ、あるいはドーム屋根２１に設けられた、タンク１内を点検するための人孔（図示せず）から、タンク１内に搬入する。その後、搬入した遮断膜４を、タンク１内で展開する（図７参照）。遮断膜４が、通気孔２１ｂあるいは前記人孔からの搬入が難しい程の大きさである場合には、例えば、ドーム屋根２１に新たに開口部（例えば、２．０ｍ×２．０ｍ程度の開口部）を設け、その開口部から遮断膜４をタンク１内に搬入してもよい。この場合、遮断膜４の搬入後に、その開口部の開口を塞ぐように蓋が配備されることとなる。また、前記開口部は、ドーム屋根２１の通気孔２１ｂの周囲を拡開するようにして形成しても構わない。 Specifically, first, a plurality of through holes 6 and 6 are formed in the dome roof 21 (in the illustrated embodiment, a plurality of rows of through holes 6 and 6 arranged in a ring are concentrically formed in a row). After the formation of the through holes 6, 6, the blocking film 4 is passed from the vent hole 21 b of the dome roof 21 or the human hole (not shown) provided in the dome roof 21 for checking the inside of the tank 1. Carry in. Thereafter, the introduced blocking film 4 is developed in the tank 1 (see FIG. 7). When the blocking film 4 has a size that makes it difficult to carry in from the vent hole 21b or the human hole, for example, a new opening (for example, an opening of about 2.0 m × 2.0 m) is formed in the dome roof 21. And the blocking film 4 may be carried into the tank 1 from the opening. In this case, after the barrier film 4 is carried in, the lid is provided so as to close the opening of the opening. Further, the opening may be formed so as to expand around the vent hole 21b of the dome roof 21.

続いて、前記長材１０、１０を、形成した貫通孔６、６の各々を通じてタンク１内に垂下させる（図８参照）。図示実施の形態においては、この長材１０は、前記紐あるいはロープからなる。すなわち、長材１０における一端１０ａ側の一部分が、そのまま前記支持材５となる。そこで、各長材１０、１０の他端１０ｂ、１０ｂ側を、ドーム屋根２１の上面２１ａに配備した、例えば、ウインチなどの巻き上げ手段１１、１１に取り付けるとともに、それら長材１０、１０の一端１０ａ、１０ａ側から、貫通孔６、６の各々を通じてタンク１内に垂下させる。その後、タンク１内に垂下させた長材１０、１０における支持材５、５の一方部５ａ、５ａを、遮断膜４の取付固定部４ａ、４ａに取付固定する（詳細には、遮断膜４に設けられた固定タブ４ｂ、４ｂに、支持材５、５の一方部５ａ、５ａを結び止め、さらに、接着剤等によって固める）。 Subsequently, the long members 10 and 10 are suspended in the tank 1 through each of the formed through holes 6 and 6 (see FIG. 8). In the illustrated embodiment, the long member 10 is made of the string or rope. That is, a part of the long member 10 on the one end 10 a side becomes the support member 5 as it is. Therefore, the other ends 10b and 10b of the long members 10 and 10 are attached to the winding means 11 and 11 such as a winch provided on the upper surface 21a of the dome roof 21, and one end 10a of the long members 10 and 10 is attached. 10a is suspended in the tank 1 through each of the through holes 6 and 6. Thereafter, the first portions 5a and 5a of the support members 5 and 5 of the long members 10 and 10 suspended in the tank 1 are fixedly attached to the fixing portions 4a and 4a of the barrier film 4 (specifically, the barrier film 4). And the fixing tabs 4b and 4b provided on the one side 5a and 5a of the support members 5 and 5 are fastened and further solidified by an adhesive or the like).

その後、各長材１０、１０を、ドーム屋根２１の上面２１ａに配備した巻き上げ手段１１、１１によって巻き上げることで、長材１０、１０の一端１０ａ、１０ａ側を、貫通孔６、６の各々を通じて引き上げる（図９参照）。このとき、例えば、同心円状に複数列設けられた貫通孔６、６群のうちの、最外周に位置する貫通孔６、６群、最内周に位置する貫通孔６、６群、その他の貫通孔６、６群の順に、対応する長材１０、１０を巻き上げるのが望ましいが、必ずしもこの順番に巻き上げる必要はない。こうして、各長材１０、１０の一端１０ａ、１０ａ側が引き上げられることによって、遮断膜４が、ドーム屋根２１の内側面２１ｅに沿うように、しかも、垂れ気味の状態、すなわち、緊張されない状態で（詳細には、取付固定部４ａ、４ａ間において、垂れ気味の状態、すなわち、緊張されない状態で）、吊り上げられるとともに、それら長材１０、１０における支持材５、５が、貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡されることとなる。 Thereafter, the long members 10, 10 are wound up by the winding means 11, 11 provided on the upper surface 21 a of the dome roof 21, so that the ends 10 a, 10 a side of the long members 10, 10 pass through the through holes 6, 6. Pull up (see FIG. 9). At this time, for example, among the through-holes 6 and 6 groups provided in a plurality of rows concentrically, the through-holes 6 and 6 located in the outermost periphery, the through-holes 6 and 6 located in the innermost periphery, and the like Although it is desirable to wind up the corresponding long members 10 and 10 in the order of the through holes 6 and 6 groups, it is not always necessary to wind up in this order. Thus, by pulling up the one end 10a, 10a side of each of the long members 10, 10, the blocking film 4 extends along the inner side surface 21e of the dome roof 21, and in a drooping state, that is, in a state where it is not tensioned ( Specifically, it is lifted between the mounting and fixing portions 4a and 4a in a drooping state, that is, in a state where it is not tensioned, and the support members 5 and 5 in the long members 10 and 10 are connected to the through holes 6 and 6. Through each of them, it is passed between the upper surface 21 a side of the dome roof 21 and the blocking film 4.

そして、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡された支持材５、５の、他方部５ｂ、５ｂを、固定部７、７に固定する。詳細には、長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０の、支持材５、５を除いた部分を切断除去するとともに、プレート部材７ａ、７ａを、それらの孔７ｃ、７ｃに支持材５、５の他方部５ｂ、５ｂを通すようにして、ドーム屋根２１の上面２１ａに配備する。そして、それら支持材５、５の他方部５ｂ、５ｂに、幾重に絡めるようにして結び玉５ｃ、５ｃを形成し、それら結び玉５ｃ、５ｃを、接着剤等によって固めるようにして、各プレート部材７ａ，７ａの上面７ｄ、７ｄに固着する。また、プレート部材７ａ、７ａを、接着剤等によって、ドーム屋根２１の上面２１ａに固着する。その後、固着したプレート部材７ａ、７ａに覆い被さるように保護キャップ７ｂ、７ｂを設置し、それら保護キャップ７ｂ、７ｂの下端部とドーム屋根２１の上面２１ａとの境目の隙間を塞ぐように、コーキング７ｅ、７ｅ処理する。なお、必要に応じて、貫通孔６、６内をシールしたり、また、保護キャップ７ｂ内に、例えば、モルタルや樹脂等の充填剤を注入したりしても構わない。 Then, the other portions 5 b and 5 b of the support members 5 and 5 passed between the upper surface 21 a side of the dome roof 21 and the blocking film 4 are fixed to the fixing portions 7 and 7. Specifically, after pulling up the ends 10a, 10a of the long members 10, 10, the portions of the long members 10, 10 except for the support members 5, 5 are cut and removed, and the plate members 7a, 7a, The other portions 5b and 5b of the support members 5 and 5 are passed through the holes 7c and 7c, and the holes are arranged on the upper surface 21a of the dome roof 21. Then, knotting balls 5c and 5c are formed on the other portions 5b and 5b of the support members 5 and 5 so as to be entangled with each other, and the knotting balls 5c and 5c are hardened by an adhesive or the like. It adheres to the upper surfaces 7d and 7d of the members 7a and 7a. Further, the plate members 7a and 7a are fixed to the upper surface 21a of the dome roof 21 with an adhesive or the like. Thereafter, protective caps 7b, 7b are installed so as to cover the fixed plate members 7a, 7a, and caulking is performed so as to close the gap between the lower ends of the protective caps 7b, 7b and the upper surface 21a of the dome roof 21. 7e and 7e are processed. If necessary, the inside of the through holes 6 and 6 may be sealed, or a filler such as mortar or resin may be injected into the protective cap 7b.

また、図示実施の形態においては、遮断膜４の周端部分４ｃおよび抜き孔の周縁部分４ｄを、それぞれドーム屋根２１の内側面２１ｅに固定する。詳細には、ドーム屋根２１の内側面２１ｅの周縁部２１ｆに、シール材２２を張り付ける。そして、遮断膜４が、取付固定部４ａと周端部分４ｃ側との間において、垂れ気味の状態、すなわち、緊張されない状態で、その周端部分４ｃをシール材２２に宛がい、さらに、それら周端部分４ｃおよびシール材２２を貫通するようにして、プレート２３を介してボルト２４を締め付ける。同様に、ドーム屋根２１の内側面２１ｅの通気孔周縁部２１ｇに、シール材２２ａを張り付ける。そして、遮断膜４が、取付固定部４ａと抜き孔の周縁部分４ｄ側との間において、垂れ気味の状態、すなわち、緊張されない状態で、その抜き孔の周縁部分４ｄをシール材２２ａに宛がい、さらに、それら抜き孔の周縁部分４ｄおよびシール材２２ａを貫通するようにして、プレート２３ａを介してボルト２４ａを締め付ける。こうして、遮断膜４が、ドーム屋根２１の内側面２１ｅとの間に所要の間隔をおいて、その内側面２１ｅに沿うように、しかも、垂れ気味の状態、すなわち、緊張されない状態で（詳細には、取付固定部４ａ、４ａ間、ならびに、取付固定部４ａと遮断膜４の周端部分４ｃ側および抜き孔の周縁部分４ｄ側との間において、垂れ気味の状態、すなわち、緊張されない状態で）、ドーム屋根２１の下方に配設される。（図１、図２参照）。 Further, in the illustrated embodiment, the peripheral end portion 4 c of the blocking film 4 and the peripheral portion 4 d of the punched hole are fixed to the inner side surface 21 e of the dome roof 21. Specifically, the sealing material 22 is attached to the peripheral edge 21 f of the inner side surface 21 e of the dome roof 21. Then, the barrier film 4 is in a drooping state between the mounting and fixing portion 4a and the peripheral end portion 4c side, that is, in a state where it is not tensed, the peripheral end portion 4c is directed to the sealing material 22, and further The bolt 24 is tightened through the plate 23 so as to penetrate the peripheral end portion 4 c and the sealing material 22. Similarly, a sealing material 22a is pasted on the peripheral edge 21g of the air hole on the inner surface 21e of the dome roof 21. Then, the blocking film 4 is placed between the mounting and fixing portion 4a and the peripheral edge portion 4d side of the punched hole, and the peripheral edge portion 4d of the punched hole is directed to the sealing material 22a in a drooping state, i.e., not in tension. Further, the bolt 24a is tightened through the plate 23a so as to penetrate the peripheral portion 4d of the hole and the sealing material 22a. In this way, the barrier film 4 is spaced from the inner side surface 21e of the dome roof 21 along the inner side surface 21e at a required interval, and in a drooping state, that is, in a state where it is not tensioned (in detail). Is between the mounting and fixing portions 4a and 4a, and between the mounting and fixing portion 4a and the peripheral end portion 4c side of the blocking film 4 and the peripheral edge portion 4d side of the punched hole, that is, in a state of not being tensioned ), Disposed below the dome roof 21. (See FIGS. 1 and 2).

なお、この改修方法にあっては、タンク１内に上水が貯留していない場合はもちろん、上水が貯留している場合であっても、その改修作業に支障が生じないのであれば、実施してもよい。 In addition, in this renovation method, not only in the case where clean water is not stored in the tank 1, but also in the case where clean water is stored, if there is no problem in the renovation work, You may implement.

次に、以上の構成からなる屋根改修構造３、および屋根改修方法の作用効果について説明する。この改修構造３にあっては、遮断膜４を支持する複数の支持材５、５が、ドーム屋根２１に設けた複数の貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡され、かつ、それら支持材５、５は、一方部５ａ、５ａが、遮断膜４（詳細には、取付固定部４ａ、４ａ）に固定され、また、他方部５ｂ、５ｂが、ドーム屋根２１の上面２１ａに設けた固定部７、７（詳細には、プレート部材７ａ、７ａ）に固定される。したがって、支持材５、５の他方部５ｂ、５ｂを固定部７、７（詳細には、プレート部材７ａ、７ａ）に固定する作業を、貫通孔６、６を通じて、ドーム屋根２１上で行うことができ、作業性に優れる。また、支持材５、５の他方部５ｂ、５ｂが固定される固定部７、７（詳細には、プレート部材７ａ、７ａ）が、ドーム屋根２１の上面２１ａに設けられることから、ドーム屋根２１の内側面２１ｅの劣化が進んだ状態であっても、遮断膜４の取付工事を行うことができる。 Next, the effect of the roof repair structure 3 and the roof repair method configured as described above will be described. In the modified structure 3, the plurality of support members 5 and 5 that support the blocking film 4 are blocked from the upper surface 21 a side of the dome roof 21 through each of the plurality of through holes 6 and 6 provided in the dome roof 21. One part 5a, 5a of the supporting members 5, 5 is fixed to the blocking film 4 (specifically, the mounting fixing parts 4a, 4a), and the other part 5b. 5b is fixed to fixing portions 7 and 7 (specifically, plate members 7a and 7a) provided on the upper surface 21a of the dome roof 21. Therefore, the operation of fixing the other portions 5b, 5b of the supporting members 5, 5 to the fixing portions 7, 7 (specifically, the plate members 7a, 7a) is performed on the dome roof 21 through the through holes 6, 6. And workability is excellent. Further, since the fixing portions 7 and 7 (specifically, plate members 7a and 7a) to which the other portions 5b and 5b of the supporting members 5 and 5 are fixed are provided on the upper surface 21a of the dome roof 21, the dome roof 21 is provided. Even if the inner side surface 21e is deteriorated, the installation work of the blocking film 4 can be performed.

また、支持材５は、他方部５ｂが、プレート部材７ａの孔７ｃに挿通されるとともに、プレート部材７ａに覆い被さるようにドーム屋根２１の上面２１ａに配備された、覆い部材としての保護キャップ７ｂ内に収まるようにして、プレート部材７ａに固定されているため、支持材５の他方部５ｂおよびその他方部５ｂが固定されたプレート部材７ａを、風雨などから保護することができる。 The support member 5 has the other portion 5b inserted through the hole 7c of the plate member 7a and a protective cap 7b as a covering member provided on the upper surface 21a of the dome roof 21 so as to cover the plate member 7a. Since it is fixed to the plate member 7a so as to fit inside, the plate member 7a to which the other part 5b and the other part 5b of the support member 5 are fixed can be protected from wind and rain.

また、この改修方法にあっては、遮断膜４を支持する支持材５を一端１０ａ側に形成するまたは備える（図示実施の形態においては、一端１０ａ側に形成する）複数の長材１０、１０を、ドーム屋根２１に設けた複数の貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側からタンク１内に垂下させるとともに、支持材５、５の一方部５ａ、５ａを、タンク１内に搬入した遮断膜４（詳細には、取付固定部４ａ、４ａ）に固定する。その後、それら長材１０、１０の一端１０ａ、１０ａ側を、複数の貫通孔６、６の各々を通じて引き上げることで、遮断膜４を吊り上げるとともに、支持材５、５を、複数の貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡す。さらに、それら支持材５、５の他方部５ｂ、５ｂを、ドーム屋根２１の上面２１ａに設けた固定部７、７（詳細には、プレート部材７ａ、７ａ）に固定する。したがって、支持材５、５の他方部５ｂ、５ｂを固定部７、７（詳細には、プレート部材７ａ、７ａ）に固定する作業を、貫通孔６、６を通じて、ドーム屋根２１上で行うことができ、作業性に優れる。また、支持材５、５の他方部５ｂ、５ｂが固定される固定部７、７（詳細には、プレート部材７ａ、７ａ）が、ドーム屋根２１の上面２１ａに設けられることから、ドーム屋根２１の内側面２１ｅの劣化が進んだ状態であっても、遮断膜４の取付工事を行うことができる。 Further, in this repair method, the support member 5 that supports the blocking film 4 is formed or provided on the one end 10a side (in the illustrated embodiment, formed on the one end 10a side). Is suspended from the upper surface 21a side of the dome roof 21 into the tank 1 through each of the plurality of through-holes 6 and 6 provided in the dome roof 21, and the one parts 5a and 5a of the support members 5 and 5 are It is fixed to the blocking film 4 (in detail, mounting and fixing portions 4a and 4a) carried in. Thereafter, the one end 10a, 10a side of the long members 10, 10 is pulled up through each of the plurality of through holes 6, 6 to lift the blocking film 4, and the support members 5, 5 are connected to the plurality of through holes 6, 6 is passed between the upper surface 21 a side of the dome roof 21 and the blocking film 4. Further, the other portions 5 b and 5 b of the support members 5 and 5 are fixed to fixing portions 7 and 7 (specifically, plate members 7 a and 7 a) provided on the upper surface 21 a of the dome roof 21. Therefore, the operation of fixing the other portions 5b, 5b of the supporting members 5, 5 to the fixing portions 7, 7 (specifically, the plate members 7a, 7a) is performed on the dome roof 21 through the through holes 6, 6. And workability is excellent. Further, since the fixing portions 7 and 7 (specifically, plate members 7a and 7a) to which the other portions 5b and 5b of the supporting members 5 and 5 are fixed are provided on the upper surface 21a of the dome roof 21, the dome roof 21 is provided. Even if the inner side surface 21e is deteriorated, the installation work of the blocking film 4 can be performed.

また、長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０の、支持材５、５を除いた部分を切断除去するため、改修後のドーム屋根２１上が、長材１０、１０によって煩雑になることを回避あるいは低減することができる。 In addition, after pulling up the ends 10a, 10a side of the long members 10, 10, in order to cut off and remove the portions of the long members 10, 10 excluding the support members 5, 5, It is possible to avoid or reduce the complexity of the long members 10 and 10.

なお、本発明は、上述した実施の形態に限定されるわけではなく、その他種々の変更が可能である。例えば、屋根２は、ドーム屋根でなくても、平面状の屋根、あるいは、錐状の屋根等の、その他の屋根であってもよい。 In addition, this invention is not necessarily limited to embodiment mentioned above, A various other change is possible. For example, the roof 2 may not be a dome roof, but may be a flat roof or another roof such as a conical roof.

また、ドーム屋根２１には、必ずしも環状に並ぶ貫通孔６、６群が、同心円状に複数列設けられていなくてもよく、それ以外の所望の配置で、複数の貫通孔６、６が設けられても構わない。 In addition, the dome roof 21 does not necessarily have to be provided with a plurality of concentric circularly arranged through holes 6 and 6 groups, and a plurality of through holes 6 and 6 are provided in any other desired arrangement. It does not matter.

また、支持材５は、紐あるいはロープからならなくてもよく、例えば、図１０に示す第二の実施の形態のように、ワイヤーからなってもよい。この第二の実施の形態においては、ワイヤーからなる支持材５の他方部５ｂは、プレート部材７ａの孔（図示せず）に挿通されるとともに、そのプレート部材７ａの上方にて、例えば、ワイヤークリップ等の挟持具１２によって挟持されて、プレート部材７ａに固定されている。また、支持材５の一方部５ａは、固定タブ４ｂ（取付固定部４ａ）を通って折り返されるとともに、折り返された先端側にて、ワイヤークリップ等の挟持具１２ａによって挟持されて、その固定タブ４ｂ（取付固定部４ａ）に固定されている。 Moreover, the support material 5 does not need to consist of a string or a rope, for example, may consist of a wire like 2nd embodiment shown in FIG. In the second embodiment, the other portion 5b of the support member 5 made of a wire is inserted into a hole (not shown) of the plate member 7a, and above the plate member 7a, for example, a wire It is clamped by a clamping tool 12 such as a clip and fixed to the plate member 7a. Further, the one part 5a of the support member 5 is folded back through the fixing tab 4b (attachment fixing part 4a), and is sandwiched by the holding tool 12a such as a wire clip on the folded back end side. It is being fixed to 4b (attachment fixing | fixed part 4a).

そして、この第二の実施の形態における改修方法にあっては、ワイヤーからなる複数の長材１０、１０を、前述した第一の実施の形態と同様に、一端１０ａ、１０ａ側から、貫通孔６、６の各々を通じてタンク１内に垂下させる。その後、タンク１内に垂下させた長材１０、１０における支持材５、５を、遮断膜４の取付固定部４ａ、４ａに取付固定する（詳細には、支持材５、５の一方部５ａ，５ａを、遮断膜４の固定タブ４ｂ、４ｂに通して折り返すとともに、折り返した先端側にて、挟持具１２ａにより挟持させる）。さらに、前述した第一の実施の形態と同様に、長材１０、１０の一端１０ａ、１０ａ側を引き上げて、支持材５、５を、貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡す。 In the repair method according to the second embodiment, the plurality of long members 10 and 10 made of wires are penetrated from the one end 10a and 10a side in the same manner as in the first embodiment described above. 6 and 6 are suspended in the tank 1 through each of them. After that, the support members 5 and 5 in the long members 10 and 10 suspended in the tank 1 are attached and fixed to the attachment fixing portions 4a and 4a of the blocking film 4 (in detail, one side 5a of the support materials 5 and 5). , 5a is folded through the fixing tabs 4b, 4b of the blocking film 4 and is clamped by the clamping tool 12a on the folded tip side). Further, as in the first embodiment described above, the ends 10a and 10a of the long members 10 and 10 are pulled up, and the support members 5 and 5 are passed through each of the through holes 6 and 6 and the upper surface of the dome roof 21. It passes between the 21a side and the blocking film 4.

その後、プレート部材７ａ、７ａの上方にて、挟持具１２によって支持材５、５の他方部５ｂ、５ｂを挟持させて、それら支持材５、５の他方部５ｂ、５ｂをプレート部材７ａ、７ａに固定する。また、プレート部材７ａ、７ａを、接着剤等によって、ドーム屋根２１の上面２１ａに固着する。さらに、長材１０、１０の、支持材５、５を除いた部分を切断除去する。その後、前述した第一の実施の形態と同様に、保護キャップ７ｂ、７ｂを設置し、コーキング７ｅ、７ｅ処理する。 Thereafter, the other parts 5b and 5b of the supporting members 5 and 5 are held by the holding tool 12 above the plate members 7a and 7a, and the other parts 5b and 5b of the supporting members 5 and 5 are held by the plate members 7a and 7a. To fix. Further, the plate members 7a and 7a are fixed to the upper surface 21a of the dome roof 21 with an adhesive or the like. Further, the portions of the long members 10 and 10 excluding the support members 5 and 5 are cut and removed. After that, similarly to the first embodiment described above, protective caps 7b and 7b are installed, and coking 7e and 7e are processed.

また、固定部７は、プレート部材７ａと保護キャップ７ｂとを備える構成でなくてもよく、例えば、図１１に示す第三の実施の形態、および図１２に示す第四の実施の形態のように、固定部７は、貫通孔６に臨むようにドーム屋根２１の上面２１ａに配備された鉄棒等の金属製の棒状部材７ｆを備える構成であってもよい。そして、棒状部材７ｆと、その棒状部材７ｆに固定された支持材５の他方部５ｂとに、コンクリートＣが巻き立てられていてもよい。この場合、棒状部材７ｆとして、鉄筋を利用しても構わない。なお、図１１および図１２においては、説明の便宜上、コンクリートＣを想像線にて表している。 Moreover, the fixing | fixed part 7 does not need to be the structure provided with the plate member 7a and the protective cap 7b, for example like 3rd embodiment shown in FIG. 11, and 4th embodiment shown in FIG. Moreover, the structure provided with metal-like rod-shaped members 7f, such as an iron bar, arranged on the upper surface 21a of the dome roof 21 so as to face the through hole 6 may be adopted. The concrete C may be wound around the rod-shaped member 7f and the other portion 5b of the support member 5 fixed to the rod-shaped member 7f. In this case, a reinforcing bar may be used as the rod-shaped member 7f. In FIGS. 11 and 12, concrete C is represented by an imaginary line for convenience of explanation.

第三の実施の形態においては、ドーム屋根２１の上面２１ａに、複数の貫通孔６、６の上方を通るようにして、複数の棒状部材７ｆ、７ｆが配備されている。そして、紐あるいはロープからなる支持材５の、他方部５ｂが、貫通孔６の上方で棒状部材７ｆに結び止められ、さらに、接着剤等によって固められるようにして、その棒状部材７ｆに固定されている。さらに、貫通孔６は、その上端側が、例えば、モルタルやコンクリート等の詰め材Ｐによって詰められている。また、支持材５の一方部５ａは、前述した第一の実施の形態と同様に、固定タブ４ｂ（取付固定部４ａ）に結び止められ、さらに、接着剤等によって固められるようにして、固定タブ４ｂ（取付固定部４ａ）に取付固定されている。 In the third embodiment, a plurality of rod-like members 7f and 7f are arranged on the upper surface 21a of the dome roof 21 so as to pass above the plurality of through holes 6 and 6. Then, the other portion 5b of the support member 5 made of a string or rope is fastened to the rod-like member 7f above the through-hole 6, and further fixed to the rod-like member 7f so as to be hardened by an adhesive or the like. ing. Further, the upper end side of the through hole 6 is packed with a packing material P such as mortar or concrete. Also, the one part 5a of the support member 5 is fixed to the fixing tab 4b (attachment fixing part 4a) and further fixed by an adhesive or the like, as in the first embodiment. It is fixedly attached to the tab 4b (attachment fixing part 4a).

また、第三の実施の形態における改修方法にあっては、紐あるいはロープからなる長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０の、支持材５、５を除いた部分を切断除去するとともに、支持材５、５の他方部５ｂ、５ｂを、貫通孔６、６の上方で棒状部材７ｆ、７ｆに結び止め、さらに、接着剤等によって固める。その後、貫通孔６の上端側に詰め材Ｐを詰めるとともに、棒状部材７ｆ、７ｆおよび支持材５、５の他方部５ｂ、５ｂにコンクリートＣを巻き立てる。 Moreover, in the repair method in 3rd embodiment, after pulling up the ends 10a and 10a side of the long materials 10 and 10 which consist of a string or a rope, the support materials 5 and 5 of these long materials 10 and 10 are used. The other portions 5b and 5b of the supporting members 5 and 5 are fastened to the rod-like members 7f and 7f above the through holes 6 and 6 and further hardened with an adhesive or the like. Thereafter, the filling material P is packed on the upper end side of the through hole 6, and the concrete C is wound around the rod-like members 7 f and 7 f and the other portions 5 b and 5 b of the support materials 5 and 5.

第四の実施の形態においては、前述した第三の実施の形態と同様に、ドーム屋根２１の上面２１ａに、複数の貫通孔６、６の上方を通るようにして、複数の棒状部材７ｆ、７ｆが配備されている。そして、ワイヤーからなる支持材５の、他方部５ｂが、棒状部材７ｆの上方を通って折り返されるとともに、折り返された先端側にて、ワイヤークリップ等の挟持具１２によって挟持されて、その棒状部材７ｆに固定されている。さらに、貫通孔６は、その上端側が、例えば、モルタルやコンクリート等の詰め材Ｐによって詰められている。また、支持材５の一方部５ａは、前述した第二の実施の形態と同様に、固定タブ４ｂ（取付固定部４ａ）を通って折り返されるとともに、折り返された先端側にて、ワイヤークリップ等の挟持具１２ａによって挟持されて、その固定タブ４ｂ（取付固定部４ａ）に固定されている。 In the fourth embodiment, similarly to the third embodiment described above, the upper surface 21a of the dome roof 21 is passed through the plurality of through holes 6, 6 so that the plurality of rod-like members 7f, 7f is deployed. Then, the other part 5b of the support member 5 made of wire is folded back over the bar-shaped member 7f, and is clamped by the clamping tool 12 such as a wire clip on the folded-back end side, and the bar-shaped member It is fixed to 7f. Further, the upper end side of the through hole 6 is packed with a packing material P such as mortar or concrete. In addition, the one part 5a of the support member 5 is folded back through the fixing tab 4b (attachment fixing part 4a) as in the second embodiment described above, and a wire clip or the like at the folded tip side. Are clamped by the clamping tool 12a and fixed to the fixing tab 4b (attachment fixing part 4a).

また、第四の実施の形態における改修方法にあっては、ワイヤーからなる長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０の、支持材５、５を除いた部分を切断除去する。そして、支持材５、５の他方部５ｂ、５ｂを、棒状部材７ｆの上方を通して折り返すとともに、折り返した先端側にて、挟持具１２によって挟持させて、支持材５、５の他方部５ｂ、５ｂを棒状部材７ｆ、７ｆに固定する。その後、貫通孔６の上端側に詰め材Ｐを詰めるとともに、棒状部材７ｆ、７ｆおよび支持材５、５の他方部５ｂ、５ｂにコンクリートＣを巻き立てる。 Moreover, in the repair method in 4th embodiment, after pulling up the ends 10a and 10a side of the long materials 10 and 10 which consist of wires, the support materials 5 and 5 of these long materials 10 and 10 are remove | excluded. Cut and remove the part. Then, the other parts 5b and 5b of the support members 5 and 5 are folded back through the upper part of the rod-shaped member 7f and are sandwiched by the holding tool 12 at the folded tip end side, so that the other parts 5b and 5b of the support members 5 and 5 are obtained. Is fixed to the rod-shaped members 7f and 7f. Thereafter, the filling material P is packed on the upper end side of the through hole 6, and the concrete C is wound around the rod-like members 7 f and 7 f and the other portions 5 b and 5 b of the support materials 5 and 5.

そして、これら第三の実施の形態および第四の実施の形態における改修構造にあっては、固定部７が、貫通孔６に臨むようにドーム屋根２１の上面２１ａに配備された棒状部材７ｆを備え、かつ、棒状部材７ｆと、その棒状部材７ｆに固定された支持材５の他方部５ｂとに、コンクリートＣが巻き立てられているため、支持材５の他方部５ｂおよびその他方部５ｂが固定された棒状部材７ｆを、風雨などから保護するとともに、それら支持材５の他方部５ｂと棒状部材７ｆとをより強固に固定することができる。 And in the repair structure in these 3rd embodiment and 4th embodiment, the fixing | fixed part 7 has arrange | positioned the rod-shaped member 7f arrange | positioned at the upper surface 21a of the dome roof 21 so that the through-hole 6 may be faced. Since the concrete C is wound around the rod-like member 7f and the other portion 5b of the support member 5 fixed to the rod-like member 7f, the other portion 5b and the other portion 5b of the support member 5 are The fixed rod-shaped member 7f can be protected from wind and rain, and the other portion 5b of the support member 5 and the rod-shaped member 7f can be more firmly fixed.

また、複数の長材１０、１０は、一端１０ａ、１０ａ側に、支持材５、５を形成していなくてもよく、支持材５、５を備えていてもよい。すなわち、紐あるいはロープとか、ワイヤー等からなる複数の長材１０、１０は、一端１０ａ、１０ａ側に、それら長材１０、１０とは別体に形成された、紐あるいはロープとか、ワイヤー等からなる支持材５、５を、取り外し可能に備えていてもよい。この場合にあっては、長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０の、支持材５、５を除いた部分を取り除くのが望ましい。なお、長材１０と支持材５とは、必ずしも同一の素材からならなくてもよく、異なる素材からなってもよい。 Further, the plurality of long members 10 and 10 do not need to form the support members 5 and 5 on the one end 10a and 10a side, and may include the support members 5 and 5. That is, a plurality of long members 10, 10 made of strings or ropes, wires, and the like are formed from strings, ropes, wires, etc. formed separately from the long members 10, 10 on one end 10 a, 10 a side. The supporting members 5 and 5 may be provided so as to be removable. In this case, it is desirable to remove the portions of the long members 10 and 10 excluding the support members 5 and 5 after pulling up the ends 10a and 10a of the long members 10 and 10. The long member 10 and the support member 5 do not necessarily need to be made of the same material, and may be made of different materials.

ここで、前述した第一〜第四の実施の形態にあっては、支持材５を一端１０ａ側に形成するまたは備える複数の長材１０、１０を用いて、遮断膜４を配設していたが、必ずしもこのような構成である必要はなく、例えば、図１３および図１４に示す第五の実施の形態のように、予め複数の支持材５、５が固定されてなる遮断膜４と、複数の長材１０、１０とを用いて、遮断膜４を配設してもよい。 Here, in the first to fourth embodiments described above, the blocking film 4 is disposed using the plurality of long members 10 and 10 that form or include the support member 5 on the one end 10a side. However, such a configuration is not necessarily required. For example, as in the fifth embodiment shown in FIGS. 13 and 14, the blocking film 4 in which a plurality of support members 5 and 5 are fixed in advance. The blocking film 4 may be disposed using a plurality of long members 10 and 10.

この第五の実施の形態においては、支持材５は、例えば鉄棒等の金属製の棒部材からなり、その他方部５ｂは、プレート部材７ａの孔（図示せず）に挿通されるとともに、ナット部材１３が締め付けられて、プレート部材７ａに固定されている（図１３参照）。また、支持材５の一方部５ａには、プレート体１３ａが取り付けられており、このプレート体１３ａが、例えば、接着剤等によって、遮断膜４の、ドーム屋根２１の内側面２１ｅと対向する面（図示実施の形態においては、上面）に固着されている。 In the fifth embodiment, the support member 5 is made of a metal rod member such as a steel bar, for example, and the other side portion 5b is inserted through a hole (not shown) of the plate member 7a and a nut. The member 13 is fastened and fixed to the plate member 7a (see FIG. 13). In addition, a plate body 13a is attached to one portion 5a of the support member 5, and the plate body 13a is a surface of the blocking film 4 that faces the inner side surface 21e of the dome roof 21 by, for example, an adhesive. (In the illustrated embodiment, it is fixed to the upper surface).

また、この第五の実施の形態における改修方法は、次のとおりである。タンク１内に、ドーム屋根２１とタンク１内との間を遮断する遮断膜４を搬入する。次に、複数の長材１０、１０を、前記貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側からタンク１内に垂下させるとともに、それら長材１０、１０の一端１０ａ、１０ａ側と、タンク１内に搬入した遮断膜４に一方部５ａ、５ａが固定された、遮断膜４を支持する支持材５、５とをつなぐ。その後、長材１０、１０の一端１０ａ、１０ａ側を、貫通孔６、６の各々を通じて引き上げることで、遮断膜４を吊り上げるとともに、支持材５、５を、貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡す。そして、それら支持材５、５の他方部５ｂ、５ｂを、前記固定部７、７に固定して、遮断膜４をドーム屋根２１の下方に配設する。 Further, the repair method in the fifth embodiment is as follows. Into the tank 1, the blocking film 4 for blocking between the dome roof 21 and the tank 1 is carried. Next, the plurality of long members 10, 10 are suspended from the upper surface 21 a side of the dome roof 21 into the tank 1 through each of the through holes 6, 6, and the one end 10 a, 10 a side of these long members 10, 10. Then, the support members 5 and 5 that support the blocking film 4 and having the one parts 5a and 5a fixed to the blocking film 4 carried into the tank 1 are connected. Thereafter, the one end 10a, 10a side of the long member 10, 10 is pulled up through each of the through holes 6, 6 to lift the blocking film 4, and the support members 5, 5 are passed through each of the through holes 6, 6. It passes between the upper surface 21 a side of the dome roof 21 and the blocking film 4. Then, the other portions 5 b and 5 b of the support members 5 and 5 are fixed to the fixing portions 7 and 7, and the blocking film 4 is disposed below the dome roof 21.

詳細には、貫通孔６、６の形成後、棒部材からなる複数の支持材５、５が予め固定されてなる遮断膜４を、タンク１内に搬入する。そして、紐あるいはロープとかワイヤー等からなる長材１０、１０を、形成した貫通孔６、６の各々を通じてタンク１内に垂下させるとともに、それら長材１０、１０の一端１０ａ、１０ａ側を、タンク１内に搬入した遮断膜４の支持材５、５につなぐ（図１４参照）。その後、前述した第一〜第四の実施の形態と同様に、各長材１０、１０を、ドーム屋根２１の上面２１ａに配備した巻き上げ手段１１、１１によって巻き上げることで、長材１０、１０の一端１０ａ、１０ａ側を、貫通孔６、６の各々を通じて引き上げる。こうして、各長材１０、１０の一端１０ａ、１０ａ側が引き上げられることによって、遮断膜４が吊り上げられるとともに、それら長材１０、１０につながれた支持材５、５が、貫通孔６、６の各々を通じて、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡されることとなる。そして、長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０を、支持材５、５から取り除くとともに、プレート部材７ａ、７ａを、それらの孔（図示せず）に支持材５、５の他方部５ｂ、５ｂを通すようにして、ドーム屋根２１の上面２１ａに配備する。そして、支持材５、５の他方部５ｂ、５ｂに、ナット部材１３を締め付けて、支持材５、５の他方部５ｂ、５ｂをプレート部材７ａ，７ａに固定する。また、前述した第一の実施の形態および第二の実施の形態と同様に、プレート部材７ａ、７ａを、接着剤等によって、ドーム屋根２１の上面２１ａに固着し、さらに、保護キャップ７ｂ、７ｂを設置し、コーキング７ｅ、７ｅ処理する。 Specifically, after the through holes 6 and 6 are formed, the blocking film 4 in which a plurality of support members 5 and 5 made of bar members are fixed in advance is carried into the tank 1. Then, the long members 10 and 10 made of strings, ropes, wires or the like are suspended in the tank 1 through each of the formed through holes 6 and 6, and the ends 10a and 10a of the long members 10 and 10 are connected to the tank. 1 is connected to the support members 5 and 5 of the barrier film 4 carried into the inside (see FIG. 14). Thereafter, similarly to the first to fourth embodiments described above, the long members 10, 10 are wound up by the winding means 11, 11 provided on the upper surface 21 a of the dome roof 21, thereby The one end 10a, 10a side is pulled up through each of the through holes 6, 6. In this way, when the one end 10a, 10a side of each long member 10, 10 is pulled up, the blocking film 4 is lifted, and the support members 5, 5 connected to the long members 10, 10 are connected to the through holes 6, 6 respectively. Through the upper surface 21 a side of the dome roof 21 and the blocking film 4. And after pulling up the one ends 10a and 10a side of the long members 10, 10, the long members 10, 10 are removed from the support members 5, 5, and the plate members 7a, 7a are inserted into their holes (not shown). The other parts 5 b and 5 b of the support members 5 and 5 are passed through the upper surface 21 a of the dome roof 21. Then, the nut member 13 is fastened to the other portions 5b and 5b of the support members 5 and 5, and the other portions 5b and 5b of the support members 5 and 5 are fixed to the plate members 7a and 7a. Similarly to the first embodiment and the second embodiment described above, the plate members 7a, 7a are fixed to the upper surface 21a of the dome roof 21 with an adhesive or the like, and further, the protective caps 7b, 7b. And coking 7e and 7e are processed.

そして、この第五の実施の形態においても、前述した第一〜第四の実施の形態と同様に、支持材５、５の他方部５ｂ、５ｂを固定部７、７（詳細には、プレート部材７ａ、７ａ）に固定する作業を、貫通孔６、６を通じて、ドーム屋根２１上で行うことができ、作業性に優れる。また、ドーム屋根２１の内側面２１ｅの劣化が進んだ状態であっても、遮断膜４の取付工事を行うことができる。また、長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０を、支持材５、５から取り除くため、改修後のドーム屋根２１上が、長材１０、１０によって煩雑になることを回避あるいは低減することができる。 And also in this 5th embodiment, like the 1st-4th embodiment mentioned above, the other parts 5b and 5b of the support materials 5 and 5 are fixed to the fixing parts 7 and 7 (in detail, plate The work of fixing to the members 7a and 7a) can be performed on the dome roof 21 through the through holes 6 and 6, and the workability is excellent. Moreover, even if the deterioration of the inner side surface 21e of the dome roof 21 has progressed, the installation work of the blocking film 4 can be performed. In addition, after pulling up the ends 10 a and 10 a of the long members 10 and 10, the long members 10 and 10 are removed from the support members 5 and 5. It is possible to avoid or reduce the complexity.

また、第五の実施の形態にあっては、支持材５の一方部５ａに取り付けられたプレート体１３ａが、例えば、接着剤等によって、遮断膜４に固着されることによって、支持材５が遮断膜４に固定されているが、必ずしもこのような構成である必要はなく、例えば、図１５に示す第六の実施の形態のように、支持材５の一方部５ａには、挟持部材としての複数のプレート体１３ａ、１３ａが取り付けられており、これらプレート体１３ａ、１３ａで遮断膜４を挟み込むようにして、支持材５が遮断膜４に固定されていてもよい。 Further, in the fifth embodiment, the plate body 13a attached to the one part 5a of the support material 5 is fixed to the blocking film 4 by, for example, an adhesive, so that the support material 5 is Although it is fixed to the blocking film 4, it is not always necessary to have such a configuration. For example, as in the sixth embodiment shown in FIG. The support member 5 may be fixed to the blocking film 4 so that the blocking film 4 is sandwiched between the plate bodies 13a and 13a.

また、このように、予め複数の支持材５、５が固定されてなる遮断膜４と、複数の長材１０、１０とを用いて、遮断膜４を配設する場合においても、前述した第三の実施の形態および第四の実施の形態と同様に、固定部７が、貫通孔６に臨むようにドーム屋根２１の上面２１ａに配備された棒状部材７ｆを備え、かつ、棒状部材７ｆと、その棒状部材７ｆに固定された支持材５の他方部５ｂとに、コンクリートＣが巻き立てられていてもよい。ここで、図１６に示す第七の実施の形態においては、第三の実施の形態および第四の実施の形態と同様に、ドーム屋根２１の上面２１ａに、複数の貫通孔６、６の上方を通るようにして、複数の、鉄製の棒状部材７ｆ、７ｆが配備されている。そして、鉄製の棒部材からなる支持材５の、他方部５ｂが、例えば、溶接等によって、鉄製の棒状部材７ｆに固定されている。さらに、貫通孔６は、その上端側が、例えば、モルタルやコンクリート等の詰め材Ｐによって詰められている。 Further, in the case where the barrier film 4 is provided by using the barrier film 4 in which the plurality of support members 5 and 5 are fixed in advance and the plurality of long members 10 and 10 as described above, Similarly to the third embodiment and the fourth embodiment, the fixing portion 7 includes a rod-like member 7f disposed on the upper surface 21a of the dome roof 21 so as to face the through hole 6, and the rod-like member 7f The concrete C may be wound around the other portion 5b of the support member 5 fixed to the rod-like member 7f. Here, in the seventh embodiment shown in FIG. 16, similarly to the third embodiment and the fourth embodiment, the upper surface 21a of the dome roof 21 is provided above the plurality of through holes 6, 6. A plurality of iron rod-like members 7f and 7f are provided so as to pass through. And the other part 5b of the support material 5 which consists of iron bar members is being fixed to the iron bar-shaped member 7f by welding etc., for example. Further, the upper end side of the through hole 6 is packed with a packing material P such as mortar or concrete.

また、第七の実施の形態における改修方法にあっては、前述した第五の実施の形態および第六の実施の形態と同様に、鉄製の棒部材からなる複数の支持材５、５が予め固定されてなる遮断膜４を、タンク１内に搬入する。そして、紐あるいはロープとかワイヤー等からなる長材１０、１０を、形成した貫通孔６、６の各々を通じてタンク１内に垂下させるとともに、それら長材１０、１０の一端１０ａ、１０ａ側を、タンク１内に搬入した遮断膜４の支持材５、５につなぐ。そして、長材１０、１０の一端１０ａ、１０ａ側を引き上げた後、それら長材１０、１０を、支持材５、５から取り除くとともに、支持材５、５の他方部５ｂ、５ｂを、例えば、溶接等によって、鉄製の棒状部材７ｆに固定する。さらに、貫通孔６の上端側に詰め材Ｐを詰めるとともに、棒状部材７ｆ、７ｆおよび支持材５、５の他方部５ｂ、５ｂにコンクリートＣを巻き立てる。 Further, in the repair method in the seventh embodiment, as in the fifth embodiment and the sixth embodiment described above, a plurality of support members 5 and 5 made of iron bar members are provided in advance. The fixed barrier film 4 is carried into the tank 1. Then, the long members 10 and 10 made of strings, ropes, wires or the like are suspended in the tank 1 through each of the formed through holes 6 and 6, and the ends 10a and 10a of the long members 10 and 10 are connected to the tank. 1 is connected to the support materials 5 and 5 of the barrier film 4 carried into the inside. And after pulling up the one ends 10a and 10a side of the long members 10, 10, the long members 10, 10 are removed from the support members 5, 5, and the other portions 5b, 5b of the support members 5, 5 are, for example, It is fixed to the iron rod-like member 7f by welding or the like. Further, the filling material P is packed on the upper end side of the through hole 6, and the concrete C is wound around the rod-like members 7 f and 7 f and the other portions 5 b and 5 b of the support materials 5 and 5.

そして、この第七の実施の形態における改修構造においても、前述した第三の実施の形態および第四の実施の形態と同様に、支持材５の他方部５ｂおよびその他方部５ｂが固定された棒状部材７ｆを、風雨などから保護するとともに、それら支持材５の他方部５ｂと棒状部材７ｆとをより強固に固定することができる。 In the modified structure according to the seventh embodiment, the other portion 5b and the other portion 5b of the support member 5 are fixed in the same manner as in the third embodiment and the fourth embodiment described above. The rod-shaped member 7f can be protected from wind and rain, and the other portion 5b of the support member 5 and the rod-shaped member 7f can be more firmly fixed.

また、第五の実施の形態および第六の実施の形態において、棒部材からなる支持材５は、鉄棒等の金属製でなくてもよく、合成樹脂製であっても構わない。また第三の実施の形態および第四の実施の形態において、棒状部材７ｆは、鉄棒等の金属製でなくてもよく、合成樹脂製であってもよい。 Further, in the fifth embodiment and the sixth embodiment, the support member 5 made of a bar member may not be made of metal such as a steel bar but may be made of synthetic resin. In the third embodiment and the fourth embodiment, the rod-shaped member 7f may not be made of metal such as a steel bar, but may be made of synthetic resin.

また、予め複数の支持材５、５が固定されてなる遮断膜４と、複数の長材１０、１０とを用いて、遮断膜４を配設する場合において、それら複数の支持材５、５は、棒部材からならなくてもよく、紐あるいはロープとか、ワイヤー等からなってもよい。一方、支持材５を一端１０ａ側に形成するまたは備える複数の長材１０、１０を用いて、遮断膜４を配設する場合（前述した第一〜第四の実施の形態の場合）において、それら支持材５、５が、例えば、鉄棒等の金属製、あるいは、合成樹脂製の棒部材からなってもよい。 Further, when the barrier film 4 is provided using the barrier film 4 to which the plurality of support members 5 and 5 are fixed in advance and the plurality of long members 10 and 10, the plurality of support members 5 and 5 are disposed. May not be made of a rod member, but may be made of a string, a rope, a wire, or the like. On the other hand, in the case of disposing the blocking film 4 using the plurality of long members 10 and 10 that are formed or provided with the support member 5 on the one end 10a side (in the case of the first to fourth embodiments described above), The support members 5 and 5 may be made of, for example, a metal bar such as a steel bar or a synthetic resin bar member.

また、支持材５、５は、貫通孔６、６の各々を通じて、貫通孔６、６から鉛直下方に直状に延びるようにして、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡されていなくてもよく、例えば、貫通孔６、６から斜め下方に直状に延びるようにして、あるいは、貫通孔６、６から湾曲あるいは屈曲するようにして、ドーム屋根２１の上面２１ａ側と遮断膜４との間に渡されていてもよい。 Further, the support members 5, 5 extend between the through holes 6, 6 so as to extend straight downward from the through holes 6, 6 between the upper surface 21 a side of the dome roof 21 and the blocking film 4. For example, the upper surface 21a side of the dome roof 21 is formed so as to extend straight downward from the through holes 6, 6 or to bend or bend from the through holes 6, 6. And the barrier film 4 may be passed.

また、遮断膜４の周端部分４ｃは、ドーム屋根２１の内側面２１ｅの周縁部２１ｆに固定されていなくてもよく、例えば、図１７に示すように、タンク１の側壁１ａの内側面１ｂ、例えば、内側面１ｂの上端部に固定されていてもよい。図示実施の形態においては、遮断膜４の周端部分４ｃと、タンク１の側壁１ａの内側面１ｂの上端部との間には、気密性を確保するために、例えばスポンジゴム等の弾性材からなるシール材２２を介在させている。そして、遮断膜４の周端部分４ｃおよびシール材２２は、プレート２３を介してボルト２４等の固着具によって、側壁１ａの内側面１ｂの上端部に取付固定されている。 Further, the peripheral end portion 4c of the blocking film 4 may not be fixed to the peripheral edge portion 21f of the inner side surface 21e of the dome roof 21, for example, as shown in FIG. 17, the inner side surface 1b of the side wall 1a of the tank 1 For example, you may fix to the upper end part of the inner surface 1b. In the illustrated embodiment, an elastic material such as sponge rubber is provided between the peripheral end portion 4c of the blocking film 4 and the upper end portion of the inner side surface 1b of the side wall 1a of the tank 1 in order to ensure airtightness. The sealing material 22 which consists of is interposed. The peripheral end portion 4c of the blocking film 4 and the sealing material 22 are fixedly attached to the upper end portion of the inner side surface 1b of the side wall 1a by a fixing tool such as a bolt 24 via the plate 23.

また、タンク１の屋根改修方法において、必ずしも貫通孔６、６の形成後に、遮断膜４をタンク１内に搬入しなくてもよく、遮断膜４をタンク１内に搬入した後に、貫通孔６、６を形成しても構わない。 Further, in the method of repairing the roof of the tank 1, it is not always necessary to carry the blocking film 4 into the tank 1 after the through holes 6, 6 are formed. After the blocking film 4 is loaded into the tank 1, , 6 may be formed.

また、本発明に係る上水用タンクの屋根改修構造および上水用タンクの屋根改修方法として、既述した各種の実施の形態に示される構成要素を適宜組み合わせて実施してもよい。 Moreover, you may implement suitably combining the component shown in various embodiment mentioned above as the roof repair structure of the water tank according to this invention, and the roof repair method of the water tank.

１上水用タンク
２屋根
２１ドーム屋根
２１ａドーム屋根の上面
３屋根改修構造
４遮断膜
５支持材
５ａ支持材の一方部
５ｂ支持材の他方部
６貫通孔
７固定部
７ａプレート部材
７ｂ保護キャップ（覆い部材）
７ｃプレート部材の孔
７ｆ棒状部材
１０長材
１０ａ長材の一端
Ｃコンクリート DESCRIPTION OF SYMBOLS 1 Water supply tank 2 Roof 21 Dome roof 21a Top surface of dome roof 3 Roof repair structure 4 Barrier film 5 Support material 5a One part of support material 5b Other part of support material 6 Through hole 7 Fixing part 7a Plate member 7b Protective cap ( Covering member)
7c Hole in plate member 7f Rod member 10 Long material 10a One end of long material C Concrete

Claims

A roof repair structure of an existing water tank with a concrete roof,
The roof, a barrier film that blocks between the roof and the tank, and a plurality of support materials that support the barrier film,
The support material is passed between the upper surface side of the roof and the blocking film through each of a plurality of through holes provided in the roof, and one part of the supporting material is fixed to the blocking film. The roof repair structure for a water tank is characterized in that the other part is fixed to a fixing part provided on the upper surface of the roof, and the blocking film is disposed below the roof.

The support material is provided between the upper surface side of the roof and the blocking film so as to extend downwardly from the through hole through each of the through holes. Item 1. A roof repair structure for a water tank according to Item 1.

The fixing portion includes a plate member with a hole provided on the upper surface of the roof so as to cover the through hole, and a cover member provided on the upper surface of the roof so as to cover the plate member, and ,
The other part of the support member is inserted into the hole of the plate member and fixed to the plate member so as to be accommodated in the cover member. Refurbishment structure of the water tank.

The fixing portion includes a rod-like member disposed on the upper surface of the roof so as to face the through hole, and
The roof repair structure for a water tank according to claim 1 or 2, wherein concrete is wound around the rod-shaped member and the other portion of the support member fixed to the rod-shaped member. .

A method for repairing a roof of an existing water tank with a concrete roof,
Into the tank, carry a barrier film that blocks between the roof and the tank,
A plurality of long members that form or include a support material that supports the barrier film on one end side are suspended in the tank from the upper surface side of the roof through each of the plurality of through holes provided in the roof, and One part of the support material is fixed to the barrier film carried into the tank,
The one end side of the long member is pulled up through each of the through holes to lift the blocking film, and the support member is interposed between the upper surface side of the roof and the blocking film through each of the through holes. And
A method for repairing a roof of a water tank, wherein the other part of the supporting member is fixed to a fixing part provided on an upper surface of the roof, and the blocking film is disposed below the roof.

A method for repairing a roof of an existing water tank with a concrete roof,
Into the tank, carry a barrier film that blocks between the roof and the tank,
A plurality of long members are suspended in the tank from the upper surface side of the roof through each of a plurality of through holes provided in the roof, and one end side of the long members and the blocking film carried into the tank And one side fixed to the support material that supports the barrier film,
The one end side of the long member is pulled up through each of the through holes to lift the blocking film, and the support member is interposed between the upper surface side of the roof and the blocking film through each of the through holes. And
A method for repairing a roof of a water tank, wherein the other part of the supporting member is fixed to a fixing part provided on an upper surface of the roof, and the blocking film is disposed below the roof.

In disposing the blocking film, the support material is passed between the upper surface side of the roof and the blocking film so as to extend downward from the through hole through each of the through holes. The method for refurbishing a roof of a water tank according to claim 5 or 6.