JP5634839B2 - Construction structure of composite viaduct and construction method of the composite viaduct - Google Patents
Construction structure of composite viaduct and construction method of the composite viaduct Download PDFInfo
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- JP5634839B2 JP5634839B2 JP2010265345A JP2010265345A JP5634839B2 JP 5634839 B2 JP5634839 B2 JP 5634839B2 JP 2010265345 A JP2010265345 A JP 2010265345A JP 2010265345 A JP2010265345 A JP 2010265345A JP 5634839 B2 JP5634839 B2 JP 5634839B2
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- 238000010276 construction Methods 0.000 title claims description 57
- 239000002131 composite material Substances 0.000 title claims description 48
- 239000004567 concrete Substances 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000011440 grout Substances 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000011513 prestressed concrete Substances 0.000 description 30
- 238000000034 method Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 238000004132 cross linking Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Description
本発明は、鉄道、道路の複合高架橋の構築構造およびその複合高架橋の施工方法に関するものである。 The present invention relates to a construction structure of a composite viaduct for railways and roads and a construction method for the composite viaduct.
従来、高架橋の建設にあたって、鋼とコンクリートを用いた複合構造物の積極的活用は少なかった。また、都市内では、狭隘な箇所での施工が要求されるケースが増えてきている。 Conventionally, in the construction of viaducts, there has been little active utilization of composite structures using steel and concrete. In cities, there are increasing cases where construction is required in narrow spaces.
図１５は従来の高架橋を示す側面図、図１６はその正面図である。 FIG. 15 is a side view showing a conventional viaduct, and FIG. 16 is a front view thereof.
これらの図において、１００は高架橋、１０１はＲＣ柱、１０２はＲＣ柱１０１上に構築されるＲＣ（鉄筋コンクリート）〔又はＰＣ（プレストレストコンクリート）〕梁、１０３は高架橋１００上を走行する車両である。 In these drawings, 100 is a viaduct, 101 is an RC column, 102 is an RC (steel reinforced concrete) beam (or PC (prestressed concrete)) built on the RC column 101, and 103 is a vehicle traveling on the viaduct 100.
従来の高架橋の施工・構築方法では、時間・費用がかかりすぎるという課題があった。特に、狭隘な箇所での施工には、時間・費用がさらに増大する傾向が強い。 The conventional viaduct construction / construction method has a problem that it takes too much time and money. In particular, construction in a narrow area tends to further increase time and cost.
本発明は、上記状況に鑑みて、狭隘な箇所でも短い期間で施工でき、かつ費用を低減して構築することができる、複合高架橋の構築構造およびその複合高架橋の施工方法を提供することを目的とする。 An object of the present invention is to provide a construction structure of a composite viaduct and a construction method of the composite viaduct that can be constructed in a short period even in a narrow place and can be constructed at a reduced cost in view of the above situation. And
本発明は、上記目的を達成するために、
〔１〕複合高架橋の構築構造において、コンクリートを充填した鋼管からなるＣＦＴ柱と、このＣＦＴ柱上に配置され水平方向に移動させて構築可能なＰＣ・ＲＣの梁および床版と、前記ＣＦＴ柱と前記梁および床版とを接合するＣＦＴ柱接合部とを具備する複合高架橋の構築構造であって、前記ＣＦＴ柱の上部にアンカーフレームが設置されており、前記ＣＦＴ柱接合部は、前記ＣＦＴ柱に設置されたアンカーフレームと前記梁および床版に設置されたアンカーフレームとを、前記梁および床版を水平方向に移動させることにより位置合わせし、前記梁および床版に設置されたシース管にアンカーボルトを貫通させ、このアンカーボルトにて固定してなることを特徴とする。
In order to achieve the above object, the present invention provides
[1] In the construction structure of a composite viaduct, a CFT column made of a steel pipe filled with concrete, a PC / RC beam and a floor slab that are arranged on the CFT column and can be constructed by moving in the horizontal direction, and the CFT column And a CFT column joint that joins the beam and the floor slab, and an anchor frame is installed on the CFT column, and the CFT column joint is connected to the CFT column joint. The anchor frame installed on the column and the anchor frame installed on the beam and floor slab are aligned by moving the beam and floor slab horizontally, and the sheath tube installed on the beam and floor slab An anchor bolt is passed through and fixed with the anchor bolt .
〔２〕上記〔１〕記載の複合高架橋の構築構造において、前記シース管に前記アンカーボルトを貫通させた後、前記シース管にグラウドを注入して固定してなることを特徴とする。 [2] The composite viaduct construction structure according to the above [1] , wherein the anchor bolt is passed through the sheath tube, and then a ground is injected and fixed to the sheath tube .
〔３〕コンクリートを充填した鋼管からなるＣＦＴ柱を建て込み、このＣＦＴ柱上にＰＣ・ＲＣの梁および床版を水平方向に移動させて配置し、前記ＣＦＴ柱と前記梁および床版とを接合する複合高架橋の施工方法であって、前記ＣＦＴ柱に設置されたアンカーフレームと前記梁および床版に設置されたアンカーフレームとを、前記梁および床版を水平方向に移動させることにより位置合わせし、前記梁および床版に設置されたシース管にアンカーボルトを貫通させ、このアンカーボルトにて固定することを特徴とする。 [3] A CFT column made of a steel pipe filled with concrete is built, and a PC / RC beam and a floor slab are horizontally moved on the CFT column, and the CFT column, the beam and the floor slab are arranged. A method for constructing a composite viaduct for joining, wherein the anchor frame installed on the CFT pillar and the anchor frame installed on the beam and floor slab are aligned by moving the beam and floor slab horizontally. An anchor bolt is passed through the sheath tube installed on the beam and the floor slab, and the anchor bolt is used for fixing.
〔４〕上記〔３〕記載の複合高架橋の施工方法において、前記シース管に前記アンカーボルトを貫通させた後、前記シース管にグラウドを注入することを特徴とする。 [ 4 ] The composite viaduct construction method according to the above [ 3 ], wherein the anchor bolt is passed through the sheath tube, and then a grout is injected into the sheath tube.
本発明によれば、狭隘な箇所での施工でも、期間を短縮し、かつ費用を低減して構築することができる複合高架橋の構築構造およびその複合高架橋の施工方法を提供することができる。すなわち、剛性の高いＣＦＴ柱の活用により、柱・基礎の数を減少させることができるので、コストの低減を図ることができる。また、ＰＣ梁・ＲＣの梁および床版とＣＦＴ柱との接合構造により、狭隘な箇所での施工も可能であり、施工期間を短縮しコストを縮減することができる。 ADVANTAGE OF THE INVENTION According to this invention, the construction structure of the composite viaduct and the construction method of the composite viaduct which can be constructed by shortening the period and reducing the cost even in construction in a narrow place can be provided. That is, since the number of columns and foundations can be reduced by utilizing a highly rigid CFT column, cost can be reduced. Further, the construction in a narrow space is possible by the joint structure of the PC beam / RC beam and the floor slab and the CFT column, so that the construction period can be shortened and the cost can be reduced.
特に、本発明のＣＦＴ柱を用いた複合高架橋の施工方法では、コンクリートの固化を待たずにＣＦＴ柱へ荷重をかけることができるので、柱建て込みからの作業時間を短縮することができ、急速施工が可能になる利点がある。 In particular, in the construction method of the composite viaduct using the CFT pillar of the present invention, it is possible to apply a load to the CFT pillar without waiting for the solidification of the concrete, so that the work time from the pillar erection can be shortened. There is an advantage that construction is possible.
本発明の複合高架橋の構築構造は、コンクリートを充填した鋼管からなるＣＦＴ柱と、このＣＦＴ柱上に配置され水平方向に移動させて構築可能なＰＣ・ＲＣの梁および床版と、前記ＣＦＴ柱と前記梁および床版とを接合するＣＦＴ柱接合部とを具備する複合高架橋の構築構造であって、前記ＣＦＴ柱の上部にアンカーフレームが設置されており、前記ＣＦＴ柱接合部は、前記ＣＦＴ柱に設置されたアンカーフレームと前記梁および床版に設置されたアンカーフレームとを、前記梁および床版を水平方向に移動させることにより位置合わせし、前記梁および床版に設置されたシース管にアンカーボルトを貫通させ、このアンカーボルトにて固定してなる。 The construction structure of the composite viaduct of the present invention includes a CFT column made of a steel pipe filled with concrete, a PC / RC beam and a floor slab that are arranged on the CFT column and can be constructed by moving in the horizontal direction, and the CFT column. And a CFT column joint that joins the beam and the floor slab, and an anchor frame is installed on the CFT column, and the CFT column joint is connected to the CFT column joint. The anchor frame installed on the column and the anchor frame installed on the beam and floor slab are aligned by moving the beam and floor slab horizontally, and the sheath tube installed on the beam and floor slab The anchor bolt is passed through and fixed with this anchor bolt .
以下、本発明の実施の形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail.
まず、狭隘な箇所での施工が行われる高架橋の施工について説明する。 First, the construction of the viaduct where construction is performed in a narrow area will be described.
図１〜図８は本発明の複合高架橋の施工の各工程を示す模式図であり、図１（ａ）〜図８（ａ）は正面図、図１（ｂ）〜図８（ｂ）は側面図である。 FIGS. 1-8 is a schematic diagram which shows each process of the construction of the composite viaduct of this invention, FIG.1 (a)-FIG.8 (a) are front views, FIG.1 (b)-FIG.8 (b) are FIG. It is a side view.
図１〜図８において、１は作業規制区域、２は車両、３は作業構台、４は作業機械、５は車両２が走行している作業規制区域１の外側に設置されるＣＦＴ（Ｃｏｎｃｒｅｔｅ Ｆｉｌｌｅｄ Ｔｕｂｕｌａｒ）柱、６はＣＦＴ柱５上に構築されるＰＣ・ＲＣの梁および床版である。 1 to 8, 1 is a work regulation area, 2 is a vehicle, 3 is a work gantry, 4 is a work machine, 5 is a CFT (Concrete Filled) installed outside the work regulation area 1 where the vehicle 2 is traveling. Tubular column 6 is a PC / RC beam and floor slab constructed on CFT column 5.
そこで、高架橋の施工は以下のような手順により行われる。 Therefore, the construction of the viaduct is performed according to the following procedure.
（１）まず、図１に示すように、作業機械４を載置する作業構台３を高架橋施工予定位置の外側に配置する。 (1) First, as shown in FIG. 1, the work gantry 3 on which the work machine 4 is placed is disposed outside the planned viaduct construction position.
（２）図２に示すように、作業構台３の内側の高架橋施工予定位置にＣＦＴ柱５の建て込みを一部行う。 (2) As shown in FIG. 2, the CFT pillar 5 is partially built at the viaduct construction planned position inside the work gantry 3.
（３）図３に示すように、ＣＦＴ柱５上にＰＣ・ＲＣの梁および床版６を構築する。 (3) As shown in FIG. 3, a PC / RC beam and a floor slab 6 are constructed on the CFT column 5.
（４）次いで、図４に示すように、ＣＦＴ柱５の建て込みを行っていない位置まで作業構台３を移動させる。 (4) Next, as shown in FIG. 4, the work gantry 3 is moved to a position where the CFT pillar 5 is not built.
（５）図５に示すように、上記（２）で建て込みを行っていない位置にＣＦＴ柱５の建て込みを行う。 (5) As shown in FIG. 5, the CFT pillar 5 is installed at a position where the installation is not performed in (2) above.
（６）図６に示すように、上記（５）で建て込んだＣＦＴ柱５上にＰＣ・ＲＣの梁および床版６を構築する。 (6) As shown in FIG. 6, a PC / RC beam and a floor slab 6 are constructed on the CFT column 5 built in (5) above.
（７）図７に示すように、作業構台３の撤去を行う。 (7) As shown in FIG. 7, the work gantry 3 is removed.
（８）図８に示すように、車両２の線路を構築した高架橋上に切り替える。 (8) As shown in FIG. 8, switch to the viaduct on which the track of the vehicle 2 is constructed.
図９は本発明の実施例を示す複合高架橋の側面図、図１０はその複合高架橋の正面図、図１１は本発明の実施例を示す複合高架橋のＣＦＴ柱の先端部の斜視図である。 FIG. 9 is a side view of a composite viaduct showing an embodiment of the present invention, FIG. 10 is a front view of the composite viaduct, and FIG. 11 is a perspective view of a tip portion of a CFT column of the composite viaduct showing an embodiment of the present invention.
これらの図において、１１は高架橋、１２はＣＦＴ柱であり、このＣＦＴ柱１２は、図１１に示すように、コンクリート１２Ａを充填した鋼管１２Ｂからなり、高い剛性を持ち、急速施工が可能である。１３はＣＦＴ柱１２上に構築されるＰＣ梁（床版）、１４は高架橋１１上を走行する車両、１５はＣＦＴ柱接合部である。 In these drawings, 11 is a viaduct and 12 is a CFT column. As shown in FIG. 11, this CFT column 12 is made of a steel pipe 12B filled with concrete 12A, has high rigidity, and can be rapidly constructed. . 13 is a PC beam (floor slab) constructed on the CFT column 12, 14 is a vehicle traveling on the viaduct 11, and 15 is a CFT column joint.
本発明に用いるＣＦＴ柱１２は、上記したように、コンクリート１２Ａを充填した鋼管１２Ｂからなり、高い剛性を有しており、かつ従来のＲＣ柱に比べて強度が高く、したがって、設置する本数を減少させることができる。例えば、従来のＲＣ柱を６本で構成していたところを、ＣＦＴ柱４本に代えることができる。 As described above, the CFT column 12 used in the present invention is made of the steel pipe 12B filled with the concrete 12A, has high rigidity, and has a higher strength than the conventional RC column. Can be reduced. For example, the place where the conventional RC pillar is composed of six can be replaced with four CFT pillars.
このように、ＣＦＴ柱を活用することにより、柱・基礎の数を減少させることができ、コストの低減を図ることができる。 Thus, by utilizing the CFT pillars, the number of pillars / foundations can be reduced, and the cost can be reduced.
また、本発明のＣＦＴ柱を用いた複合高架橋の施工方法では、急速施工が可能である。すなわち、従来のＲＣ柱を用いた高架橋の施工方法では、ＲＣ柱を打設後コンクリートが固化するまでに１週間程度を要し、その間はＲＣ柱に荷重をかけることができないため、コンクリートが固化するまで作業を中断せざるを得なかった。一方、本発明のＣＦＴ柱を用いた複合高架橋の施工方法では、鋼管を使用し、その鋼管は溶接やボルトを使用して接合することができるため、コンクリートの固化を待たずにＣＦＴ柱に荷重をかけることができ、作業を中断する必要がない。そのため、柱建て込みからの大幅な作業時間の短縮が可能になる。 Moreover, in the construction method of the composite viaduct using the CFT pillar of the present invention, rapid construction is possible. That is, in the conventional viaduct construction method using RC columns, it takes about one week for the concrete to solidify after placing the RC columns, and during that time it is impossible to apply a load to the RC columns, so the concrete is solidified. I had to suspend my work until. On the other hand, in the construction method of the composite viaduct using the CFT column of the present invention, a steel pipe is used, and the steel pipe can be joined using welding or a bolt, so that the load is applied to the CFT column without waiting for solidification of the concrete. Without having to interrupt the work. For this reason, it is possible to greatly shorten the work time from the pillar construction.
次に、上記図１〜８で説明した複合高架橋の施工工程における、ＣＦＴ柱とその上に構築されるＰＣ・ＲＣの梁および床版との接続について説明する。 Next, the connection between the CFT column and the PC / RC beam and floor slab constructed on the composite viaduct construction process described with reference to FIGS.
図１２は本発明の実施例を示す複合高架橋のＣＦＴ柱接合部の施工方法（柱頭アンカーフレーム方式）を示す断面図である。 FIG. 12 is a cross-sectional view showing a construction method (pillar anchor frame method) of a composite viaduct CFT column joint portion showing an embodiment of the present invention.
（１）まず、図１２（ａ）に示すように、アンカーフレーム２２が設置されたＣＦＴ柱２１の建て込みを行う。 (1) First, as shown in FIG. 12A, the CFT pillar 21 on which the anchor frame 22 is installed is built.
（２）次に、図１２（ｂ）に示すように、ＣＦＴ柱２１のアンカーフレーム２２上にＰＣ梁（床版）２３を載せる。このＰＣ梁２３にはシース管２４を有するアンカーフレーム２５が設けられている。 (2) Next, as shown in FIG. 12B, a PC beam (floor slab) 23 is placed on the anchor frame 22 of the CFT column 21. The PC beam 23 is provided with an anchor frame 25 having a sheath tube 24.
（３）図１２（ｃ）に示すように、ＣＦＴ柱２１のアンカーフレーム２２上でＰＣ梁２３を水平移動させて、ＰＣ梁２３のアンカーフレーム２５とＣＦＴ柱２１のアンカーフレーム２２とを対応させ、ＰＣ梁２３の位置決めを行う。 (3) As shown in FIG. 12C, the PC beam 23 is moved horizontally on the anchor frame 22 of the CFT column 21 so that the anchor frame 25 of the PC beam 23 and the anchor frame 22 of the CFT column 21 correspond to each other. The positioning of the PC beam 23 is performed.
（４）図１２（ｄ）に示すように、シース管２４内にアンカーボルト２６を設置することにより、ＰＣ梁２３をＣＦＴ柱２１へ強固に固定する。 (4) As shown in FIG. 12 (d), the anchor beam 26 is installed in the sheath tube 24 to firmly fix the PC beam 23 to the CFT column 21.
（５）図１２（ｅ）に示すように、シース管２４およびアンカーボルト２６の上部２８にグラウト２７，２９を注入する。 (5) As shown in FIG. 12 (e), grouts 27 and 29 are injected into the upper portion 28 of the sheath tube 24 and the anchor bolt 26.
このようなＰＣ梁とＣＦＴ柱の接合構造とすることにより、ＣＦＴ柱２１へＰＣ梁２３を強固に固定し、堅牢な複合高架橋を構築することができる。 By adopting such a joint structure of the PC beam and the CFT column, the PC beam 23 can be firmly fixed to the CFT column 21 and a robust composite viaduct can be constructed.
図１３，図１４は本発明の実施例を示す複合高架橋の施工時の平面図である。 13 and 14 are plan views at the time of construction of the composite viaduct showing an embodiment of the present invention.
図３に示すような先に構築したＰＣ梁（床版）に対して図６に示すような後から構築するＰＣ梁（床版）を接続する際には、図１３に示すように、先に構築したＰＣ梁２３に対して後から構築するＰＣ梁３１，３２を矢印のように回転させながら、スリーブ継手３３，３４を挿入するようにしている。そして、所定の位置にＰＣ梁３１，３２を設置した後、図１２（ｄ），（ｅ）に示すように、ＣＦＴ柱２１にＰＣ梁２３を固定するため、アンカーボルト２６を挿入しシース管２４にグラウト２７を注入することで、図１４に示すようにＣＦＴ柱接合部を堅牢に構築することができる。 When connecting a PC beam (floor slab) to be constructed later as shown in FIG. 6 to a PC beam (floor slab) constructed previously as shown in FIG. 3, as shown in FIG. The sleeve joints 33 and 34 are inserted while rotating the PC beams 31 and 32 constructed later with respect to the PC beam 23 constructed as shown in FIG. Then, after installing the PC beams 31 and 32 at predetermined positions, as shown in FIGS. 12D and 12E, in order to fix the PC beam 23 to the CFT column 21, an anchor bolt 26 is inserted and a sheath tube is inserted. By injecting grout 27 into 24, the CFT column joint can be firmly constructed as shown in FIG.
このように構成することにより、ＣＦＴ柱２１上にＰＣ梁２３を強固に接合するとともに、先に構築したＰＣ梁２３と後から構築するＰＣ梁３１，３２とを固定することができる。 With this configuration, the PC beam 23 can be firmly joined to the CFT column 21 and the PC beam 23 constructed earlier and the PC beams 31 and 32 constructed later can be fixed.
なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。 In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.
本発明の複合高架橋の構築構造およびその複合高架橋の施工方法は、狭隘な箇所でも短い期間で施工することができ、かつ費用を低減することができる複合高架橋の施工方法として利用可能である。 The construction structure of the composite viaduct and the construction method of the composite viaduct of the present invention can be used as a construction method of the composite viaduct which can be constructed in a short period even in a narrow place and can reduce the cost.
１ 作業規制区域
２，１４ 車両
３ 作業構台
４ 作業機械
５，１２，２１ ＣＦＴ柱
６，１３，２３，３１，３２ 床版（ＰＣ梁）
１１ 高架橋
１２Ａ コンクリート
１２Ｂ 鋼管
１５ ＣＦＴ柱接合部
２２ ＣＦＴ柱のアンカーフレーム
２４ シース管
２５ ＰＣ梁（床版）のアンカーフレーム
２６ アンカーボルト
２７，２９ グラウト
２８ アンカーボルトの上部
３３，３４ スリーブ継手
DESCRIPTION OF SYMBOLS 1 Work regulation area 2,14 Vehicle 3 Work gantry 4 Work machine 5,12,21 CFT pillar 6,13,23,31,32 Floor slab (PC beam)
11 Viaduct 12A Concrete 12B Steel pipe 15 CFT column joint 22 CFT column anchor frame 24 Sheath tube 25 PC beam (floor plate) anchor frame 26 Anchor bolt 27, 29 Grout 28 Anchor bolt upper part 33, 34 Sleeve joint
Claims (4)
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| JP2010265345A JP5634839B2 (en) | 2010-11-29 | 2010-11-29 | Construction structure of composite viaduct and construction method of the composite viaduct |
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| JP2012117216A JP2012117216A (en) | 2012-06-21 |
| JP5634839B2 true JP5634839B2 (en) | 2014-12-03 |
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| JPS60258311A (en) * | 1984-06-01 | 1985-12-20 | 株式会社 間組 | Construction of high structure |
| JPH11264190A (en) * | 1998-03-17 | 1999-09-28 | Shimizu Corp | Connection structure of filled steel tube concrete column |
| JP3924192B2 (en) * | 2002-04-16 | 2007-06-06 | 前田建設工業株式会社 | Bridge superstructure and substructure connection structure and its construction method |
| JP2003306950A (en) * | 2002-04-18 | 2003-10-31 | Ps Mitsubishi Construction Co Ltd | PC well head connection structure |
| JP2010138643A (en) * | 2008-12-12 | 2010-06-24 | Ohbayashi Corp | Construction method for column-beam joint part of viaduct, and viaduct |
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