JP7762912B2 - Reinforcement hardware for manway openings, manway opening reinforcement structure, and manway opening reinforcement method - Google Patents
Reinforcement hardware for manway openings, manway opening reinforcement structure, and manway opening reinforcement methodInfo
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Description
本発明は、人通口補強金物、人通口補強構造及び人通口補強方法に関する。 The present invention relates to a manway reinforcement hardware, a manway reinforcement structure, and a manway reinforcement method.
住宅等の建物における鉄筋コンクリート造のべた基礎や布基礎の立ち上がり部には、床下点検用の人通口が厚み方向に貫通して形成される。これにより、立ち上がり部にはコンクリートの断面欠損が生じ、内部鉄筋も分断されてしまうため、人通口の補強が従来行われている（例えば特許文献１，２参照）。
特許文献１の開口補強ユニットは、上向きに開放するコ字状の補強用枠板における左右の側板間に、架け渡し部材を架け渡すことで人通口の補強を図るものである。
特許文献２の連結部材は、人通口の両端面に突設されたアンカーボルト間に架け渡されて、連結用ナットで連結されることで人通口の補強を図るものである。
In buildings such as houses, manholes for underfloor inspection are formed in the thickness direction at the rising portion of reinforced concrete slab foundations or continuous foundations. Because this causes cross-sectional defects in the concrete at the rising portion and also separates the internal reinforcing bars, manholes have traditionally been reinforced (see, for example, Patent Documents 1 and 2).
The opening reinforcement unit of Patent Document 1 aims to reinforce a pedestrian opening by bridging a bridging member between the left and right side plates of a U-shaped reinforcing frame plate that opens upward.
The connecting member of Patent Document 2 is bridged between anchor bolts protruding from both end faces of the manway and connected with connecting nuts to reinforce the manway.
特許文献１における開口補強ユニットの場合、人通口の開口縁に沿って補強用枠板や架け渡し部材を装着できるので人通口の補強効果が高いが、人通口の高さや幅に合わせて人通口ごとに専用の開口補強ユニットを用意しなければならない。すなわち、複数種類のサイズ設定で形成された開口補強ユニットを用意しなければならないため、製造等のコストを抑えにくい場合がある。
一方、特許文献２における連結部材の場合は、アンカーボルトを基礎に埋設できれば、あとは連結部材を連結用ナットでアンカーボルトに連繋するだけで人通口の補強ができるので、構造的にシンプルで、特許文献１の開口補強ユニットよりもコストを抑えやすい。ところが、特許文献２の場合も、連結部材は、両側のアンカーボルト間の距離と略一致する長さに設定される構成となっているため、人通口の幅（両アンカーボルト間の距離）に応じて長さを変えなければならない。すなわち、特許文献１と同様に、複数種類の長さに形成された連結部材を用意しなければならないため、結局、製造等のコストを抑えにくい場合がある。
In the case of the opening reinforcement unit in Patent Document 1, a reinforcing frame plate or bridging member can be attached along the edge of the opening, which provides a high reinforcement effect for the opening, but a dedicated opening reinforcement unit must be prepared for each opening to match the height and width of the opening. In other words, opening reinforcement units must be prepared in multiple sizes, which can make it difficult to keep manufacturing costs down.
On the other hand, in the case of the connecting member in Patent Document 2, once the anchor bolts are buried in the foundation, the manhole can be reinforced simply by connecting the connecting member to the anchor bolts with connecting nuts, so it is structurally simple and easier to keep costs down than the opening reinforcement unit in Patent Document 1. However, in the case of Patent Document 2, the connecting member is also configured to have a length that is set to approximately the same as the distance between the anchor bolts on both sides, so the length must be changed depending on the width of the manhole (the distance between the anchor bolts). In other words, as with Patent Document 1, connecting members formed in multiple lengths must be prepared, which ultimately makes it difficult to keep manufacturing costs down.
本発明は上記事情に鑑みてなされたものであり、その課題は、長さ調整が可能な状態に構成されて、様々なサイズの人通口に対応して取り付けることができ、製造や施工のコストを抑えることである。 The present invention was made in consideration of the above circumstances, and its objective is to create a device that is adjustable in length, can be installed to accommodate various sizes of manway openings, and reduces manufacturing and installation costs.
請求項１に記載の発明は、例えば図１～図３に示すように、建物用基礎の立ち上がり部１に形成された人通口２の一方の側面３と他方の側面４との間に架け渡されて取り付けられる人通口補強金物１０であって、
前記一方の側面３と前記他方の側面４のそれぞれに固定される一対の筒状部１１，１２と、
前記一対の筒状部１１，１２間に架け渡されるとともに、前記一対の筒状部１１，１２同士を連結する棒状の連結部１３と、を備えており、
前記連結部１３の長さ方向一端部１３ａは、前記一対の筒状部１１，１２のうち一方の筒状部１１の内部に対して進退可能に挿入され、前記連結部１３の長さ方向他端部１３ｂは、前記一対の筒状部１１，１２のうち他方の筒状部１２の内部に対して進退可能に挿入されており、
前記連結部１３は、第一ボルト部材１３によって構成されており、
前記筒状部１１，１２は、
本体筒部１１ａ，１２ａと、
中央に前記第一ボルト部材１３が通される孔が形成され、前記本体筒部１１ａ，１２ａのうち前記第一ボルト部材１３側の端部に一体に設けられた第一環状板部１１ｂ，１２ｂと、
前記第一環状板部１１ｂ，１２ｂの内側面に一体に設けられ、前記第一ボルト部材１３がねじ込まれる第一ナット部材１１ｃ，１２ｃと、を有していることを特徴とする。
The invention described in claim 1 is, for example, as shown in Figures 1 to 3, a manway reinforcing hardware 10 that is installed between one side 3 and the other side 4 of a manway 2 formed in a rising portion 1 of a building foundation,
a pair of cylindrical portions 11 and 12 fixed to the one side surface 3 and the other side surface 4, respectively;
a rod-shaped connecting portion 13 that is bridged between the pair of cylindrical portions 11 and 12 and connects the pair of cylindrical portions 11 and 12 to each other,
One end 13a of the connecting portion 13 in the length direction is inserted into one of the pair of cylindrical portions 11, 12 so as to be able to advance and retreat, and the other end 13b of the connecting portion 13 in the length direction is inserted into the other of the pair of cylindrical portions 11, 12 so as to be able to advance and retreat,
The connecting portion 13 is constituted by a first bolt member 13,
The cylindrical portions 11 and 12 are
Main body cylindrical portions 11a and 12a,
a first annular plate portion 11b, 12b formed integrally with the end portion of the main body cylindrical portion 11a, 12a on the first bolt member 13 side, the first annular plate portion 11b, 12b having a hole formed in the center thereof through which the first bolt member 13 is passed;
and first nut members 11c, 12c, which are integrally formed on the inner surfaces of the first annular plate portions 11b, 12b and into which the first bolt member 13 is screwed .
請求項１に記載の発明によれば、連結部１３の長さ方向一端部１３ａが、一方の筒状部１１の内部に対して進入する長さと、連結部１３の長さ方向他端部１３ｂが、他方の筒状部１２の内部に対して進入する長さを適宜調整することで、一対の筒状部１１，１２間の長さを容易に変更できるので、人通口補強金物１０は、全体の長さ調整が可能な状態に構成されることになる。これにより、様々なサイズの人通口２に対応して取り付けることができるので、汎用性が高まり、製造や施工のコストを抑えることができる。 According to the invention described in claim 1, the length between the pair of cylindrical portions 11, 12 can be easily changed by appropriately adjusting the length by which one longitudinal end 13a of the connecting portion 13 extends into one cylindrical portion 11 and the length by which the other longitudinal end 13b of the connecting portion 13 extends into the other cylindrical portion 12. This allows the manway reinforcement hardware 10 to be configured in a way that allows the overall length to be adjusted. This allows it to be installed to accommodate manway 2 of various sizes, increasing versatility and reducing manufacturing and construction costs.
また、第一ボルト部材１３の長さ方向一端部１３ａが、一方の筒状部１１の内部に対して進入する長さと、第一ボルト部材１３の長さ方向他端部１３ｂが、他方の筒状部１２の内部に対して進入する長さを調整する場合に、一対の筒状部１１，１２を回転させるだけで、容易に長さ調整を行うことができる。 Furthermore , when adjusting the length by which one longitudinal end 13a of the first bolt member 13 penetrates into the interior of one tubular portion 11 and the length by which the other longitudinal end 13b of the first bolt member 13 penetrates into the interior of the other tubular portion 12, the length can be easily adjusted by simply rotating the pair of tubular portions 11, 12.
請求項２に記載の発明は、例えば図１～図３に示すように、請求項１に記載の人通口補強金物１０において、
前記一方の側面３と前記他方の側面４にそれぞれ設けられて、前記一対の筒状部１１，１２がそれぞれ固定される一対の被固定部１５，１６を更に備えており、
前記筒状部１１，１２は、
中央に孔が形成され、前記本体筒部１１ａ，１２ａのうち前記人通口２の前記側面３，４側の端部に一体に設けられた第二環状板部１１ｄ，１２ｄと、
前記第二環状板部１１ｄ，１２ｄの内側面に一体に設けられ、先端部が、前記第二環状板部１１ｄ，１２ｄにおける中央の孔から前記人通口２の前記側面３，４に向かって突出する第二ボルト部材１１ｅ，１２ｅと、を有しており、
前記被固定部１５，１６は、内部に雌ネジが形成された筒状のインサート部材１５，１６によって構成されていることを特徴とする。
The invention described in claim 2 is, for example, as shown in Figures 1 to 3, in the pedestrian entrance reinforcement metal fitting 10 described in claim 1 ,
The housing further includes a pair of fixed portions 15 and 16 provided on the one side surface 3 and the other side surface 4, respectively, to which the pair of cylindrical portions 11 and 12 are fixed,
The cylindrical portions 11 and 12 are
A hole is formed in the center, and second annular plate portions 11d, 12d are integrally provided at the end portions of the main body cylindrical portions 11a, 12a on the side surfaces 3, 4 of the manway 2;
and second bolt members 11e, 12e that are integrally formed on the inner surfaces of the second annular plate portions 11d, 12d and have tip portions that protrude from central holes in the second annular plate portions 11d, 12d toward the side surfaces 3, 4 of the manway 2,
The fixed portions 15, 16 are characterized by being constituted by cylindrical insert members 15, 16 having internal threads.
請求項２に記載の発明によれば、一対の被固定部１５，１６が、一方の側面３と他方の側面４にそれぞれ設けられているので、一対の筒状部１１，１２を、一方の側面３と他方の側面４にそれぞれ確実に固定することができる。
さらに、筒状部１１，１２は、人通口２の側面３，４に向かって突出する第二ボルト部材１１ｅ，１２ｅと、を有しているので、一方の側面３と他方の側面４の、内部に雌ネジが形成された筒状のインサート部材１５，１６に向かって、筒状部１１，１２を回転させて取り付けるだけで、筒状部１１，１２を、人通口２の側面３，４に容易に固定することができる。
According to the invention described in claim 2 , a pair of fixed portions 15, 16 are provided on one side surface 3 and the other side surface 4, respectively, so that a pair of tubular portions 11, 12 can be securely fixed to one side surface 3 and the other side surface 4, respectively.
Furthermore, the tubular portions 11, 12 have second bolt members 11e, 12e that protrude toward the side surfaces 3, 4 of the manway 2, so that the tubular portions 11, 12 can be easily fixed to the side surfaces 3, 4 of the manway 2 simply by rotating and attaching them toward the tubular insert members 15, 16 on one side surface 3 and the other side surface 4, which have internal female threads.
請求項３に記載の発明は、例えば図１～図３に示すように、請求項２に記載の人通口補強金物１０において、
前記被固定部１５，１６は、前記立ち上がり部１の内部鉄筋６に接続される接続部１５ａ，１６ａを有することを特徴とする。
The invention described in claim 3 is, for example, as shown in Figures 1 to 3, in the pedestrian entrance reinforcement metal fitting 10 described in claim 2 ,
The fixed portions 15 and 16 are characterized by having connection portions 15 a and 16 a that are connected to the internal reinforcing bars 6 of the rising portion 1 .
請求項３に記載の発明によれば、被固定部１５，１６は、立ち上がり部１の内部鉄筋６に接続される接続部１５ａ，１６ａを有するので、被固定部１５，１６の取り付け状態を安定的にすることができ、これにより、人通口補強金物１０全体の取り付け状態を向上させることができる。 According to the invention described in claim 3 , the fixed parts 15, 16 have connection parts 15a, 16a that are connected to the internal reinforcing bars 6 of the rising part 1, so that the installation state of the fixed parts 15, 16 can be stabilized, thereby improving the installation state of the entire manway reinforcement hardware 10.
請求項４に記載の発明は、例えば図１～図３に示すように、請求項１に記載の人通口補強金物１０において、
前記第一ボルト部材１３に設けられて、当該第一ボルト部材１３を軸回りに回転動作させるための操作を受け付ける操作受付部１４（第二ナット部材１４）を更に備えることを特徴とする。
The invention described in claim 4 is, for example, as shown in Figures 1 to 3, in the pedestrian entrance reinforcement metal fitting 10 described in claim 1 ,
The device is characterized by further comprising an operation receiving unit 14 (second nut member 14) provided on the first bolt member 13 and receiving an operation for rotating the first bolt member 13 around its axis.
請求項４に記載の発明によれば、操作受付部１４によって操作を受け付けて第一ボルト部材１３を軸回りに回転させることで、第一ボルト部材１３を、一対の筒状部１１，１２に対して移動させて進退させることができる。これにより、第一ボルト部材１３を、必要に応じて一対の筒状部１１，１２から抜くことが可能となるので、一対の筒状部１１，１２を人通口２の側面３，４から取り外しやすくなる。 According to the invention described in claim 4 , by receiving an operation from the operation receiving unit 14 and rotating the first bolt member 13 about its axis, the first bolt member 13 can be moved forward and backward relative to the pair of cylindrical portions 11, 12. This makes it possible to remove the first bolt member 13 from the pair of cylindrical portions 11, 12 as needed, making it easier to remove the pair of cylindrical portions 11, 12 from the side surfaces 3, 4 of the manway 2.
請求項５に記載の発明は、人通口補強構造であって、例えば図１～図３に示すように、請求項１から４のいずれか一項に記載の人通口補強金物１０が、前記人通口２における前記一方の側面３と前記他方の側面４との間に架け渡されて取り付けられており、
前記一方の筒状部１１は前記一方の側面３に固定され、
前記他方の筒状部１２は前記他方の側面４に固定され、
前記連結部１３は、前記一対の筒状部１１，１２間に架け渡されるとともに、前記一対の筒状部１１，１２同士を連結しており、
前記連結部１３の長さ方向一端部１３ａは、前記一方の筒状部１１の内部に挿入され、前記連結部１３の長さ方向他端部１３ｂは、前記他方の筒状部１２の内部に挿入され、前記連結部１３の前記長さ方向一端部１３ａと前記長さ方向他端部１３ｂが、前記一対の筒状部１１，１２の内部に対して交互に進退可能となっていることを特徴とする。
The invention described in claim 5 is a manway reinforcement structure, and as shown in, for example, Figures 1 to 3, the manway reinforcement hardware 10 described in any one of claims 1 to 4 is attached between the one side surface 3 and the other side surface 4 of the manway 2,
The one cylindrical portion 11 is fixed to the one side surface 3,
The other cylindrical portion 12 is fixed to the other side surface 4,
The connecting portion 13 is bridged between the pair of cylindrical portions 11 and 12 and connects the pair of cylindrical portions 11 and 12 to each other,
One longitudinal end 13a of the connecting portion 13 is inserted into the interior of one of the tubular portions 11, and the other longitudinal end 13b of the connecting portion 13 is inserted into the interior of the other tubular portion 12, and the one longitudinal end 13a and the other longitudinal end 13b of the connecting portion 13 can move alternately forward and backward into the interiors of the pair of tubular portions 11, 12.
請求項５に記載の発明によれば、連結部１３の長さ方向一端部１３ａと長さ方向他端部１３ｂが、一対の筒状部１１，１２の内部に対して交互に進退可能となっているので、人通口補強金物１０を人通口２に取り付ける場合に、連結部１３の長さ方向一端部１３ａが一方の筒状部１１の内部に進入している長さや、連結部１３の長さ方向他端部１３ｂが他方の筒状部１２の内部に進入している長さを適宜調整できる。そのため、連結部１３が一方の筒状部１１又は他方の筒状部１２から取り外されないようにしながら、人通口補強金物１０を、人通口２の一方の側面３と他方の側面４との間に架け渡して取り付けることができる。さらに、一対の筒状部１１，１２に対する連結部１３の進入長さを調整できるので、人通口２のサイズに関わらず、同様の取付方法で人通口補強金物１０を、人通口２の一方の側面３と他方の側面４との間に架け渡して取り付けることができ、汎用性を向上させることができる。 According to the invention of claim 5 , one lengthwise end 13a and the other lengthwise end 13b of the connecting portion 13 can alternately advance and retreat into the interior of the pair of cylindrical portions 11, 12, so that when attaching the manway reinforcing hardware 10 to the manway 2, it is possible to appropriately adjust the length by which one lengthwise end 13a of the connecting portion 13 extends into one cylindrical portion 11 and the length by which the other lengthwise end 13b of the connecting portion 13 extends into the other cylindrical portion 12. Therefore, the manway reinforcing hardware 10 can be attached by bridging between one side surface 3 and the other side surface 4 of the manway 2 while preventing the connecting portion 13 from being removed from one cylindrical portion 11 or the other cylindrical portion 12. Furthermore, since the insertion length of the connecting portion 13 relative to the pair of tubular portions 11, 12 can be adjusted, the manway reinforcement hardware 10 can be installed in the same installation method, spanning one side 3 and the other side 4 of the manway 2, regardless of the size of the manway 2, thereby improving versatility.
請求項６に記載の発明は、例えば図１～図３に示すように、請求項１から４のいずれか一項に記載の人通口補強金物１０によって前記人通口２の補強を行う人通口補強方法であって、
前記連結部１３の前記長さ方向一端部１３ａが内部に挿入された前記一方の筒状部１１を、前記他方の筒状部１２から離間する方向に移動させながら前記一方の側面３に固定する工程と、
前記連結部１３の前記長さ方向他端部１３ｂが内部に挿入された前記他方の筒状部１２を、前記一方の筒状部１１から離間する方向に移動させながら前記他方の側面４に固定する工程と、のうち少なくとも一方の工程を有することを特徴とする。
The invention described in claim 6 is a method for reinforcing a pedestrian entrance 2 using the pedestrian entrance reinforcing hardware 10 described in any one of claims 1 to 4 , as shown in, for example, FIGS. 1 to 3,
a step of fixing the one cylindrical portion 11, into which the one longitudinal end 13a of the connecting portion 13 has been inserted, to the one side surface 3 while moving the one cylindrical portion 11 in a direction away from the other cylindrical portion 12;
and a process of fixing the other tubular portion 12, into which the other longitudinal end portion 13b of the connecting portion 13 has been inserted, to the other side surface 4 while moving it in a direction away from the one tubular portion 11.
請求項６に記載の発明によれば、一方の筒状部１１を、他方の筒状部１２から離間する方向に移動させながら一方の側面３に固定する工程と、他方の筒状部１２を、一方の筒状部１１から離間する方向に移動させながら他方の側面４に固定する工程と、のうち少なくとも一方の工程を行うことで、人通口補強金物１０を人通口２に取り付けることができ、人通口２を容易に補強できる。さらに、一方又は他方の筒状部１１，１２を移動させて、一対の筒状部１１，１２間の長さを調整できるので、人通口２のサイズに関わらず、同様の取付方法で人通口補強金物１０を、人通口２の一方の側面３と他方の側面４との間に架け渡して取り付けることができ、汎用性を向上させることができる。 According to the invention of claim 6 , by performing at least one of the steps of fixing one cylindrical portion 11 to one side surface 3 while moving it in a direction away from the other cylindrical portion 12, and fixing the other cylindrical portion 12 to the other side surface 4 while moving it in a direction away from the one cylindrical portion 11, the manway reinforcing hardware 10 can be attached to the manway 2, thereby easily reinforcing the manway 2. Furthermore, because the length between the pair of cylindrical portions 11, 12 can be adjusted by moving one or the other cylindrical portion 11, 12, the manway reinforcing hardware 10 can be attached by bridging between one side surface 3 and the other side surface 4 of the manway 2 using a similar attachment method, regardless of the size of the manway 2, thereby improving versatility.
本発明によれば、長さ調整が可能な状態に構成されて、様々なサイズの人通口に対応して取り付けることができ、製造や施工のコストを抑えることができる。 According to the present invention, the length is adjustable, allowing it to be installed to accommodate various sizes of manway openings, thereby reducing manufacturing and installation costs.
以下、図面を参照して本発明の実施の形態について説明する。ただし、以下に述べる実施形態には、本発明を実施するために技術的に好ましい種々の限定が付されているが、本発明の技術的範囲を以下の実施形態及び図示例に限定するものではない。なお、以下の実施形態及び図示例における方向は、あくまでも説明の便宜上設定したものである。 Embodiments of the present invention will be described below with reference to the drawings. However, while the embodiments described below are subject to various limitations that are technically preferable for implementing the present invention, the technical scope of the present invention is not limited to the following embodiments and illustrated examples. Note that the directions in the following embodiments and illustrated examples have been set solely for the convenience of explanation.
図１～図３において符号１は、住宅等の建物における基礎（べた基礎、布基礎）の立ち上がり部を示す。建物の基礎全体のうち、床下点検用として人や機材の通り抜けが必要とされる箇所の立ち上がり部１には、人通口２が形成されている。すなわち、建物の基礎には、複数の人通口２が形成されることが多いが、一つしか形成されない場合もある。 In Figures 1 to 3, the reference numeral 1 indicates the rising portion of a foundation (mat foundation, spread footing) for a building such as a house. A manhole 2 is formed in the rising portion 1 at a location within the entire building foundation where people and equipment need to pass through for underfloor inspections. In other words, a building's foundation often has multiple manholes 2, but sometimes only one is formed.
なお、人通口２は、人の通り抜けを可能とする寸法に設定されており、本実施形態においては、左右方向の開口寸法が６００ｍｍに設定され、上下方向の開口寸法が３５０ｍｍに設定されている。立ち上がり部１の厚み方向（正背方向）の寸法は、例えば１２０ｍｍ～１５０ｍｍ程度に設定されることが一般的である。 The opening 2 is sized to allow people to pass through; in this embodiment, the opening dimensions are set to 600 mm in the left-right direction and 350 mm in the up-down direction. The thickness dimension of the rising portion 1 (front-to-back direction) is generally set to, for example, approximately 120 mm to 150 mm.
人通口２は、立ち上がり部１が凹字型に形成されることで構成され、左側面３（一方の側面３）と、右側面４（他方の側面４）と、底面５と、を有する。
また、立ち上がり部１の上面には、土台等の建物躯体の一部（下端部）が載せられる。そのため、当該建物躯体の一部は、人通口２を跨いで配置される。換言すれば、人通口２を跨ぐ建物躯体の一部が、人通口２の天面を構成していることとなる。
The pedestrian entrance 2 is configured by forming the rising portion 1 in a concave shape, and has a left side surface 3 (one side surface 3), a right side surface 4 (the other side surface 4), and a bottom surface 5.
Furthermore, a part (lower end) of the building skeleton such as a base is placed on the upper surface of the rising portion 1. Therefore, the part of the building skeleton is positioned so as to straddle the manway 2. In other words, the part of the building skeleton straddling the manway 2 forms the top surface of the manway 2.
立ち上がり部１の上面には、土台等が跨って配置されるものの、人通口２は上方に開放されているため、人通口補強金物１０によって補強される。
人通口補強金物１０が取り付けられる位置は、人通口２における左側面３の上端部と右側面４の上端部との間であり、これら左右側面３，４間に架け渡されて取り付けられている。
Although a base or the like is placed across the upper surface of the rising portion 1, the manway 2 is open upward and is therefore reinforced by a manway reinforcing metal fitting 10.
The position where the manway reinforcement metal fittings 10 are attached is between the upper end of the left side surface 3 and the upper end of the right side surface 4 of the manway 2, and they are attached by bridging these left and right side surfaces 3, 4.
人通口補強金物１０は、一対の筒状部１１，１２と、棒状の連結部１３と、操作受付部１４と、一対の被固定部１５，１６と、を備える。
一対の筒状部１１，１２は、左側に位置する一方の筒状部１１と、右側に位置する他方の筒状部１２と、からなる。
また、一対の被固定部１５，１６は、左側に位置する一方の被固定部１５と、右側に位置する他方の被固定部１６と、からなる。
The manway reinforcement hardware 10 comprises a pair of cylindrical portions 11, 12, a rod-shaped connecting portion 13, an operation receiving portion 14, and a pair of fixed portions 15, 16.
The pair of cylindrical portions 11, 12 consists of one cylindrical portion 11 located on the left side and the other cylindrical portion 12 located on the right side.
The pair of fixed portions 15, 16 includes one fixed portion 15 located on the left side and the other fixed portion 16 located on the right side.
棒状の連結部１３は、一対の筒状部１１，１２間に架け渡されるとともに、一対の筒状部１１，１２同士を連結するものであり、第一ボルト部材によって構成されている。
第一ボルト部材１３は、本実施形態においては、頭部のない全ねじボルトが採用されており、長さ方向一端部１３ａから長さ方向他端部１３ｂにかけて連続する雄ネジが形成されている。
なお、第一ボルト部材１３の長さは、図２，図３に示す例における長さに限定されるものではなく、本発明の趣旨を逸脱しない範囲で適宜変更可能である。
The rod-shaped connecting portion 13 is bridged between the pair of cylindrical portions 11, 12 and connects the pair of cylindrical portions 11, 12 to each other, and is constituted by a first bolt member.
In this embodiment, the first bolt member 13 is a fully threaded bolt without a head, and has a continuous male thread formed from one longitudinal end 13a to the other longitudinal end 13b.
The length of the first bolt member 13 is not limited to the length shown in the examples of FIGS. 2 and 3, and can be changed as appropriate within the scope of the present invention.
一対の筒状部１１，１２は、人通口２における左側面３と右側面４のそれぞれに固定されるものであり、筒の向き（すなわち、後述する第一環状板部１１ｂ，１２ｂと第二環状板部１１ｄ，１２ｄの並び方向）が左右方向となるように配置されている。そして、左側に位置する一方の筒状部１１は、左側端部が、人通口２の左側面３に固定され、右側に位置する他方の筒状部１２は、右側端部が、人通口２の右側面４に固定されている。 The pair of cylindrical portions 11, 12 are fixed to the left side surface 3 and right side surface 4 of the manway 2, respectively, and are arranged so that the orientation of the cylinders (i.e., the alignment direction of the first annular plate portions 11b, 12b and second annular plate portions 11d, 12d, described below) is in the left-right direction. The left-side end of one cylindrical portion 11 located on the left side is fixed to the left side surface 3 of the manway 2, and the right-side end of the other cylindrical portion 12 located on the right side is fixed to the right side surface 4 of the manway 2.
一方の筒状部１１は、本体筒部１１ａと、第一環状板部１１ｂと、第一ナット部材１１ｃと、第二環状板部１１ｄと、第二ボルト部材１１ｅと、を有する。
他方の筒状部１２も同様に、本体筒部１２ａと、第一環状板部１２ｂと、第一ナット部材１２ｃと、第二環状板部１２ｄと、第二ボルト部材１２ｅと、を有する。
なお、これら一対の筒状部１１，１２は左右対称に配置されるため、以下、一方の筒状部１１のみ詳細な説明を行い、他方の筒状部１２については詳細な説明を省略する。
One cylindrical portion 11 has a main cylindrical portion 11a, a first annular plate portion 11b, a first nut member 11c, a second annular plate portion 11d, and a second bolt member 11e.
Similarly, the other cylindrical portion 12 has a main cylindrical portion 12a, a first annular plate portion 12b, a first nut member 12c, a second annular plate portion 12d, and a second bolt member 12e.
Since the pair of cylindrical portions 11 and 12 are arranged symmetrically, only one cylindrical portion 11 will be described in detail below, and a detailed description of the other cylindrical portion 12 will be omitted.
本体筒部１１ａは、いわゆる単管パイプによって構成されており、長さ方向両端部が開放されている。本体筒部１１ａとして単管パイプを用いるため、取付方向の自由度が高いというメリットがある。 The main body tubular portion 11a is made of a single-tube pipe, and both ends in the longitudinal direction are open. Using a single-tube pipe as the main body tubular portion 11a has the advantage of allowing for a high degree of freedom in the installation direction.
第一環状板部１１ｂは、円環状の金属製板材である。中央には、第一ボルト部材１３が通される孔が形成され、本体筒部１１ａのうち、第一ボルト部材１３側（人通口２の中央側）の端部に溶接されて一体に設けられている。 The first annular plate portion 11b is a circular metal plate. A hole is formed in the center through which the first bolt member 13 is passed, and it is welded to and integral with the end of the main cylindrical portion 11a on the first bolt member 13 side (the center side of the manway 2).
第一ナット部材１１ｃは、第一環状板部１１ｂの内側面（本体筒部１１ａの筒内側面）に溶接されて一体に設けられている。そして、第一環状板部１１ｂにおける中央の孔に通された第一ボルト部材１３がねじ込まれる。 The first nut member 11c is welded to the inner surface of the first annular plate portion 11b (the inner surface of the tubular main body portion 11a) and is formed integrally therewith. The first bolt member 13 is threaded into the central hole in the first annular plate portion 11b.
第二環状板部１１ｄは、円環状の金属製板材であり、中央には、第二ボルト部材１１ｅが通される孔が形成されている。また、この第二環状板部１１ｄは、本体筒部１１ａのうち、人通口２の左側面３側の端部に溶接されて、本体筒部１１ａと一体に設けられている。 The second annular plate portion 11d is a circular metal plate with a hole in the center through which the second bolt member 11e is passed. The second annular plate portion 11d is welded to the end of the main body cylindrical portion 11a on the left side surface 3 side of the manway 2, and is formed integrally with the main body cylindrical portion 11a.
第二ボルト部材１１ｅは、頭部のあるボルトであり、その頭部が、第二環状板部１１ｄの内側面（本体筒部１１ａの筒内側面）に溶接されて一体に設けられている。そして、先端部が、第二環状板部１１ｄにおける中央の孔から人通口２の左側面３に向かって突出している。 The second bolt member 11e is a bolt with a head, and the head is welded to the inner surface of the second annular plate portion 11d (the inner cylindrical surface of the main cylindrical portion 11a) and formed integrally therewith. The tip of the bolt protrudes from the central hole in the second annular plate portion 11d toward the left side surface 3 of the manway 2.
操作受付部１４は、連結部１３である第一ボルト部材１３に設けられて、当該第一ボルト部材１３を軸回りに回転動作させるための操作を受け付けるためのものである。すなわち、操作受付部１４は、第一ボルト部材１３を一方側又は他方側に移動させるために、第一ボルト部材１３に設けられている。
なお、操作とは、作業員が第一ボルト部材１３を軸回りに回転させようとする作業を指し、作業は素手又は工具を用いて行われる。
The operation receiving unit 14 is provided on the first bolt member 13, which is the connecting portion 13, and serves to receive an operation for rotating the first bolt member 13 about its axis. That is, the operation receiving unit 14 is provided on the first bolt member 13 in order to move the first bolt member 13 to one side or the other side.
The operation refers to the work of an operator attempting to rotate the first bolt member 13 around its axis, and the work is performed with bare hands or using a tool.
より具体的に説明すると、操作受付部１４は、本実施形態においては、第一ボルト部材１３に設けられた第二ナット部材１４によって構成されている。この第二ナット部材１４は、第一ナット部材１１ｃと同様のナットである。
第二ナット部材１４は、第一ボルト部材１３の長さ方向中央部に溶接固定されており、例えばレンチ等の工具によって回転させることで、第一ボルト部材１３が同時に回転するようになっている。そして、第二ナット部材１４が、一対の筒状部１１，１２のうちいずれか一方の筒状部１１（１２）における第一環状板部１１ｂ（１２ｂ）に接するまで第一ボルト部材１３を回転させると、第一ボルト部材１３の他方側の端部が、他方の筒状部１２（１１）から取り外されるようになっている。
なお、第一ボルト部材１３の長さは、第二ナット部材１４が、一対の筒状部１１，１２のうちいずれか一方の筒状部１１（１２）における第一環状板部１１ｂ（１２ｂ）に接したときに、第一ボルト部材１３の他方側の端部を、他方の筒状部１２（１１）から取り外すことができる寸法に設定されているものとする。
More specifically, in this embodiment, the operation receiving unit 14 is configured by a second nut member 14 provided on the first bolt member 13. This second nut member 14 is a nut similar to the first nut member 11c.
The second nut member 14 is welded to the center of the length of the first bolt member 13, and is configured to rotate the first bolt member 13 simultaneously by rotating it with a tool such as a wrench. When the first bolt member 13 is rotated until the second nut member 14 contacts the first annular plate portion 11b (12b) of one of the pair of cylindrical portions 11, 12, the other end of the first bolt member 13 is detached from the other cylindrical portion 12 (11).
The length of the first bolt member 13 is set to a dimension that allows the other end of the first bolt member 13 to be removed from the other tubular portion 12 (11) when the second nut member 14 comes into contact with the first annular plate portion 11b (12b) of either one of the pair of tubular portions 11, 12.
なお、操作受付部１４は、本実施形態においてはナットが採用されるが、これに限られるものではなく、第一ボルト部材１３の長さ方向中央部を、レンチ等の工具で把持できるように加工し、当該部分を操作受付部１４としてもよい。つまり、第一ボルト部材１３は、必ずしも全ねじボルトでなくてもよいものとする。 In this embodiment, a nut is used as the operation acceptance unit 14, but this is not limited to this. The center portion of the length of the first bolt member 13 may be processed so that it can be gripped with a tool such as a wrench, and this portion may be used as the operation acceptance unit 14. In other words, the first bolt member 13 does not necessarily have to be a fully threaded bolt.
一対の被固定部１５，１６は、人通口２における左側面３と右側面４にそれぞれ設けられて、一対の筒状部１１，１２がそれぞれ固定される。
より具体的に説明すると、一対の被固定部１５，１６は、内部に雌ネジが形成された筒状のインサート部材１５，１６によって構成されている。一対の被固定部１５，１６は、長さ方向一端部（一対の筒状部１１，１２側）が開口して形成され、当該開口が、人通口２における左側面３及び右側面４に露出するように配置される。そして、当該露出した開口から、一対の筒状部１１，１２における第二ボルト部材１１ｅ，１２ｅがねじ込まれて固定される。
A pair of fixed portions 15, 16 are provided on the left side surface 3 and the right side surface 4 of the manway 2, respectively, and a pair of cylindrical portions 11, 12 are fixed thereto.
More specifically, the pair of fixed portions 15, 16 are configured by cylindrical insert members 15, 16 having female threads formed therein. The pair of fixed portions 15, 16 are formed with an opening at one end in the length direction (the pair of cylindrical portions 11, 12 side), and are arranged so that the opening is exposed on the left side surface 3 and the right side surface 4 of the manway 2. Then, second bolt members 11e, 12e of the pair of cylindrical portions 11, 12 are screwed into the exposed opening and fixed.
一対の被固定部１５，１６は、立ち上がり部１の内部に予め埋設されている。
また、一対の被固定部１５，１６は、立ち上がり部１の内部鉄筋６に接続される接続部１５ａ，１６ａを有する。
接続部１５ａ，１６ａは、一対の被固定部１５，１６のうち人通口２とは反対側の端部に固定された一対の金属製の棒状部材である。そして、一対の接続部１５ａ，１６ａのうち少なくとも一方が、内部鉄筋６に接するように設けられている。内部鉄筋６に対しては溶接されることが望ましい。
すなわち、立ち上がり部１を形成する場合は、内部鉄筋６を組んだときに一対の被固定部１５，１６も一緒に組み込んで溶接し、その後にコンクリート打設を行うようにする。立ち上がり部１がプレキャストコンクリートの場合は、工場にて内部鉄筋６に溶接されて一緒に組み込まれるものとする。
The pair of fixed portions 15 and 16 are embedded in the rising portion 1 in advance.
In addition, the pair of fixed portions 15 and 16 have connection portions 15 a and 16 a that are connected to the internal reinforcing bars 6 of the rising portion 1 .
The connecting portions 15a, 16a are a pair of metal rod-shaped members fixed to the ends of the pair of fixed portions 15, 16 on the opposite side from the manway 2. At least one of the pair of connecting portions 15a, 16a is provided so as to contact the internal reinforcing bar 6. It is desirable that the connecting portions 15a, 16a be welded to the internal reinforcing bar 6.
That is, when forming the rising portion 1, the pair of fixed portions 15, 16 are assembled and welded together when the internal reinforcing bars 6 are assembled, and then concrete is poured. If the rising portion 1 is made of precast concrete, it is welded to the internal reinforcing bars 6 at the factory and assembled together.
次に、以上のように構成された人通口補強金物１０を人通口２に取り付けて人通口２の補強を行う方法について説明する。
なお、一対の筒状部１１，１２は、各部が溶接されて組み立てられた状態になっているものとする。
Next, a method for reinforcing the manway 2 by attaching the manway reinforcing hardware 10 configured as described above to the manway 2 will be described.
It is assumed that the pair of cylindrical portions 11 and 12 are in an assembled state with each portion welded together.
まずは、一対の被固定部１５，１６である一対のインサート部材１５，１６を、各々の接続部１５ａ，１６ａを内部鉄筋６に接続させた状態で、立ち上がり部１に埋設する。そして、一対の筒状部１１，１２側の開口が、人通口２における左側面３及び右側面４に露出するように配置する。 First, a pair of insert members 15, 16, which are a pair of fixed portions 15, 16, are embedded in the rising portion 1 with their respective connection portions 15a, 16a connected to the internal reinforcing bars 6. Then, they are positioned so that the openings on the pair of cylindrical portions 11, 12 are exposed on the left side 3 and right side 4 of the manway 2.
続いて、予め操作受付部１４である第二ナット部材１４が設けられた第一ボルト部材１３の長さ方向一端部１３ａを、一方の筒状部１１に取り付けておくとともに、一方の筒状部１１の内部に進入させておく。さらに、第一ボルト部材１３の長さ方向他端部１３ｂを、他方の筒状部１２に取り付けておくとともに、他方の筒状部１２の内部に進入させておく。すなわち、一対の筒状部１１，１２と第一ボルト部材１３とを一体に組み合わせておき、さらに、一対の筒状部１１，１２間の間隔を短い状態にしておく。すなわち、人通口補強金物１０のうち被固定部１５，１６を除く部分の全長を、人通口２における左側面３から右側面４までの長さよりも短い状態にしておく。
そして、人通口補強金物１０のうち被固定部１５，１６を除く部分を、人通口２における左側面３と右側面４との間に配置する。
Next, one longitudinal end 13a of the first bolt member 13, on which the second nut member 14 serving as the operation receiving unit 14 has been previously provided, is attached to one of the cylindrical portions 11 and inserted into the interior of the one cylindrical portion 11. Furthermore, the other longitudinal end 13b of the first bolt member 13 is attached to the other cylindrical portion 12 and inserted into the other cylindrical portion 12. That is, the pair of cylindrical portions 11, 12 and the first bolt member 13 are combined together, and the distance between the pair of cylindrical portions 11, 12 is kept short. That is, the entire length of the portion of the manway reinforcement metal fitting 10 excluding the fixed portions 15, 16 is kept shorter than the length from the left side surface 3 to the right side surface 4 of the manway 2.
Then, the part of the manway reinforcement hardware 10 excluding the fixed parts 15 and 16 is placed between the left side 3 and the right side 4 of the manway 2 .
続いて、一方の筒状部１１を、人通口２の左側面３に固定する。
一方の筒状部１１における左側端部から第二ボルト部材１１ｅの先端部が、第二環状板部１１ｄにおける中央の孔から突出しているため、第二ボルト部材１１ｅの先端部を、インサート部材１５の筒内にねじ込み、これにより、一方の筒状部１１を、人通口２の左側面３に固定する。
なお、第二ボルト部材１１ｅは第二環状板部１１ｄに溶接され、第二環状板部１１ｄは本体筒部１１ａに溶接されている。そのため、第二ボルト部材１１ｅの先端部をインサート部材１５の筒内にねじ込む際は、一方の筒状部１１全体を、第二ボルト部材１１ｅの軸回りに回転させるようにする。
Next, one of the cylindrical portions 11 is fixed to the left side surface 3 of the manway 2.
The tip of the second bolt member 11e protrudes from the left end of one of the tubular portions 11 through the central hole in the second annular plate portion 11d, and the tip of the second bolt member 11e is screwed into the tube of the insert member 15, thereby fixing one of the tubular portions 11 to the left side surface 3 of the manway 2.
The second bolt member 11e is welded to the second annular plate portion 11d, and the second annular plate portion 11d is welded to the main body tubular portion 11a. Therefore, when the tip of the second bolt member 11e is screwed into the tube of the insert member 15, the entire one tubular portion 11 is rotated around the axis of the second bolt member 11e.
続いて、他方の筒状部１２を、人通口２の右側面４に固定する。
他方の筒状部１２の右側面４への固定方法は、一方の筒状部１１の左側面３への固定方法と同一である。すなわち、第二ボルト部材１２ｅの先端部をインサート部材１６の筒内にねじ込む際に、他方の筒状部１２全体を、第二ボルト部材１２ｅの軸回りに回転させるようにする。このとき、第一ボルト部材１３における長さ方向一端部１３ａが一方の筒状部１１の内部に進入している長さや、長さ方向他端部１３ｂが他方の筒状部１２の内部に進入している長さを適宜調整し、第一ボルト部材１３が一方の筒状部１１又は他方の筒状部１２から取り外されないようにする。
Next, the other cylindrical portion 12 is fixed to the right side surface 4 of the manway 2.
The method of fixing the other tubular portion 12 to the right side surface 4 is the same as the method of fixing the one tubular portion 11 to the left side surface 3. That is, when the tip end of the second bolt member 12e is screwed into the cylinder of the insert member 16, the entire other tubular portion 12 is rotated around the axis of the second bolt member 12e. At this time, the length by which one longitudinal end 13a of the first bolt member 13 extends into the one tubular portion 11 and the length by which the other longitudinal end 13b extends into the other tubular portion 12 are appropriately adjusted to prevent the first bolt member 13 from being removed from the one tubular portion 11 or the other tubular portion 12.
なお、一方の筒状部１１を人通口２の左側面３に固定する工程と、他方の筒状部１２を人通口２の右側面４に固定する工程は、順番が逆でもよい。もしくは、これらの工程を同時に行ってもよい。すなわち、人通口補強金物１０によって人通口２の補強を行う際は、第一ボルト部材１３の長さ方向一端部１３ａが内部に挿入された一方の筒状部１１を、他方の筒状部１２から離間する方向に移動させながら一方の側面３に固定する工程と、第一ボルト部材１３の長さ方向他端部１３ｂが内部に挿入された他方の筒状部１２を、一方の筒状部１１から離間する方向に移動させながら他方の側面４に固定する工程と、のうち少なくとも一方の工程を行うようにする。 The order of the process of fixing one tubular portion 11 to the left side surface 3 of the manway 2 and the process of fixing the other tubular portion 12 to the right side surface 4 of the manway 2 may be reversed. Alternatively, these processes may be performed simultaneously. In other words, when reinforcing the manway 2 with the manway reinforcing hardware 10, at least one of the following processes is performed: a process of fixing one tubular portion 11, with one longitudinal end 13a of the first bolt member 13 inserted therein, to one side surface 3 while moving it in a direction away from the other tubular portion 12; and a process of fixing the other tubular portion 12, with the other longitudinal end 13b of the first bolt member 13 inserted therein, to the other side surface 4 while moving it in a direction away from the one tubular portion 11.
そして、第一ボルト部材１３における長さ方向一端部１３ａ及び長さ方向他端部１３ｂが一方の筒状部１１及び他方の筒状部１２から抜け出ない範囲で、一方の筒状部１１と他方の筒状部１２とを極力離間させるようにする。すると、人通口２における左側面３と右側面４との間で、人通口補強金物１０を突っ張った状態にすることができる。 Then, the one tubular portion 11 and the other tubular portion 12 are spaced as far apart as possible, so that the one longitudinal end 13a and the other longitudinal end 13b of the first bolt member 13 do not slip out of the one tubular portion 11 and the other tubular portion 12. This allows the manway reinforcement hardware 10 to be tensioned between the left side surface 3 and the right side surface 4 of the manway 2.
以上のようにして、人通口補強金物１０を人通口２に取り付けて人通口２の補強を行うことができる。
床下の点検を行う場合は、操作受付部１４である第二ナット部材１４を介して第一ボルト部材１３を軸回りに回転させる。そして、第一ボルト部材１３を、一対の筒状部１１，１２のうちいずれか一方の筒状部１１（１２）の内部に進入させることで、第一ボルト部材１３を他方の筒状部１２から取り外し、一方の筒状部１１と他方の筒状部１２とを分離状態とする。そして、一方の筒状部１１を、人通口２の左側面３から取り外し、他方の筒状部１２を、人通口２の右側面４から取り外す。これにより、人通口補強金物１０を人通口２から取り外すことができ、人や機材の通り抜けが可能な状態となる。
また、床下の点検が終了した後は、上記の方法によって人通口補強金物１０を再び人通口２に取り付けるようにする。
In this manner, the manway reinforcing hardware 10 can be attached to the manway 2 to reinforce the manway 2.
When inspecting under the floor, the first bolt member 13 is rotated about its axis via the second nut member 14, which is the operation receiver 14. Then, by inserting the first bolt member 13 into one of the pair of tubular portions 11 (12), the first bolt member 13 is removed from the other tubular portion 12, and the one tubular portion 11 and the other tubular portion 12 are separated. Then, one tubular portion 11 is removed from the left side surface 3 of the manway 2, and the other tubular portion 12 is removed from the right side surface 4 of the manway 2. This allows the manway reinforcement hardware 10 to be removed from the manway 2, allowing people and equipment to pass through.
After the inspection under the floor is completed, the manway reinforcing hardware 10 is reattached to the manway 2 using the method described above.
本実施形態によれば、以下のような優れた効果を奏する。
すなわち、連結部１３（第一ボルト部材１３）の長さ方向一端部１３ａは、一対の筒状部１１，１２のうち一方の筒状部１１の内部に対して進退可能に挿入され、連結部１３の長さ方向他端部１３ｂは、一対の筒状部１１，１２のうち他方の筒状部１２の内部に対して進退可能に挿入されているので、連結部１３の長さ方向一端部１３ａが、一方の筒状部１１の内部に対して進入する長さと、連結部１３の長さ方向他端部１３ｂが、他方の筒状部１２の内部に対して進入する長さを適宜調整することで、一対の筒状部１１，１２間の長さを容易に変更できる。これにより、人通口補強金物１０は、全体の長さ調整が可能な状態に構成されることになるので、様々なサイズの人通口２に対応して取り付けることができて汎用性が高まり、製造や施工のコストを抑えることができる。
According to this embodiment, the following excellent effects are achieved.
That is, one longitudinal end 13a of the connecting portion 13 (first bolt member 13) is inserted into one of the pair of cylindrical portions 11, 12 so as to be able to advance and retreat, and the other longitudinal end 13b of the connecting portion 13 is inserted into the other of the pair of cylindrical portions 11, 12 so as to be able to advance and retreat, so that the length by which the one longitudinal end 13a of the connecting portion 13 extends into one of the cylindrical portions 11 and the length by which the other longitudinal end 13b of the connecting portion 13 extends into the other cylindrical portion 12 can be appropriately adjusted to easily change the length between the pair of cylindrical portions 11, 12. As a result, the manway reinforcement hardware 10 is configured in a state where its overall length is adjustable, and therefore can be attached to manwayes 2 of various sizes, increasing versatility and reducing manufacturing and construction costs.
また、連結部１３である第一ボルト部材１３の長さ方向一端部１３ａが、一方の筒状部１１の内部に対して進入する長さと、第一ボルト部材１３の長さ方向他端部１３ｂが、他方の筒状部１２の内部に対して進入する長さを調整する場合に、一対の筒状部１１，１２を回転させるだけで、容易に長さ調整を行うことができる。 Furthermore, when adjusting the length by which one longitudinal end 13a of the first bolt member 13, which is the connecting portion 13, penetrates into one tubular portion 11 and the length by which the other longitudinal end 13b of the first bolt member 13 penetrates into the other tubular portion 12, the length can be easily adjusted by simply rotating the pair of tubular portions 11, 12.
また、一対の被固定部１５，１６が、一方の側面３と他方の側面４にそれぞれ設けられているので、一対の筒状部１１，１２を、一方の側面３と他方の側面４にそれぞれ確実に固定することができる。 Furthermore, a pair of fixed portions 15, 16 are provided on one side surface 3 and the other side surface 4, respectively, so that the pair of tubular portions 11, 12 can be securely fixed to one side surface 3 and the other side surface 4, respectively.
また、筒状部１１，１２は、人通口２の側面３，４に向かって突出する第二ボルト部材１１ｅ，１２ｅと、を有しているので、一方の側面３と他方の側面４の、内部に雌ネジが形成された筒状のインサート部材１５，１６に向かって、筒状部１１，１２を回転させて取り付けるだけで、筒状部１１，１２を、人通口２の側面３，４に容易に固定することができる。 In addition, the cylindrical portions 11, 12 have second bolt members 11e, 12e that protrude toward the side surfaces 3, 4 of the manway 2. Therefore, the cylindrical portions 11, 12 can be easily fixed to the side surfaces 3, 4 of the manway 2 simply by rotating and attaching them toward the cylindrical insert members 15, 16, which have internal female threads, on one side surface 3 and the other side surface 4.
また、一対の被固定部１５，１６は、立ち上がり部１の内部鉄筋６に接続される接続部１５ａ，１６ａを有するので、一対の被固定部１５，１６の取り付け状態を安定的にすることができ、これにより、人通口補強金物１０全体の取り付け状態を向上させることができる。 In addition, the pair of fixed portions 15, 16 have connecting portions 15a, 16a that connect to the internal reinforcing bars 6 of the rising portion 1, which allows for a stable attachment state of the pair of fixed portions 15, 16, thereby improving the attachment state of the entire manway reinforcement hardware 10.
また、操作受付部１４である第二ナット部材１４によって操作を受け付けて第一ボルト部材１３を軸回りに回転させることで、第一ボルト部材１３を、一対の筒状部１１，１２に対して移動させて進退させることができる。これにより、第一ボルト部材１３を、必要に応じて一対の筒状部１１，１２から抜くことが可能となるので、一対の筒状部１１，１２を人通口２の側面３，４から取り外しやすくなる。 Furthermore, by receiving an operation from the second nut member 14, which serves as the operation receiving unit 14, and rotating the first bolt member 13 around its axis, the first bolt member 13 can be moved forward and backward relative to the pair of tubular portions 11, 12. This makes it possible to remove the first bolt member 13 from the pair of tubular portions 11, 12 as needed, making it easier to remove the pair of tubular portions 11, 12 from the side surfaces 3, 4 of the manway 2.
また、連結部１３（第一ボルト部材１３）の長さ方向一端部１３ａと長さ方向他端部１３ｂが、一対の筒状部１１，１２の内部に対して交互に進退可能となっているので、人通口補強金物１０を人通口２に取り付ける場合に、連結部１３の長さ方向一端部１３ａが一方の筒状部１１の内部に進入している長さや、連結部１３の長さ方向他端部１３ｂが他方の筒状部１２の内部に進入している長さを適宜調整できる。そのため、連結部１３が一方の筒状部１１又は他方の筒状部１２から取り外されないようにしながら、人通口補強金物１０を、人通口２の一方の側面３と他方の側面４との間に架け渡して取り付けることができる。さらに、一対の筒状部１１，１２に対する連結部１３の進入長さを調整できるので、人通口２のサイズに関わらず、同様の取付方法で人通口補強金物１０を、人通口２の一方の側面３と他方の側面４との間に架け渡して取り付けることができ、汎用性を向上させることができる。 Furthermore, one longitudinal end 13a and the other longitudinal end 13b of the connecting portion 13 (first bolt member 13) can alternately advance and retreat into the interior of the pair of tubular portions 11, 12. Therefore, when attaching the manway reinforcement hardware 10 to the manway 2, the length by which one longitudinal end 13a of the connecting portion 13 extends into one tubular portion 11 and the length by which the other longitudinal end 13b of the connecting portion 13 extends into the other tubular portion 12 can be adjusted as needed. Therefore, the manway reinforcement hardware 10 can be attached by bridging it between one side surface 3 and the other side surface 4 of the manway 2 without removing the connecting portion 13 from one tubular portion 11 or the other tubular portion 12. Furthermore, because the insertion length of the connecting portion 13 relative to the pair of cylindrical portions 11, 12 can be adjusted, the manway reinforcement hardware 10 can be installed across one side 3 and the other side 4 of the manway 2 using the same installation method, regardless of the size of the manway 2, improving versatility.
また、一方の筒状部１１を、他方の筒状部１２から離間する方向に移動させながら一方の側面３に固定する工程と、他方の筒状部１２を、一方の筒状部１１から離間する方向に移動させながら他方の側面４に固定する工程と、のうち少なくとも一方の工程を行うことで、人通口補強金物１０を人通口２に取り付けることができ、人通口２を容易に補強できる。さらに、一方又は他方の筒状部１１，１２を移動させて、一対の筒状部１１，１２間の長さを調整できるので、人通口２のサイズに関わらず、同様の取付方法で人通口補強金物１０を、人通口２の一方の側面３と他方の側面４との間に架け渡して取り付けることができ、汎用性を向上させることができる。 Furthermore, by performing at least one of the following steps: a step of fixing one tubular portion 11 to one side surface 3 while moving it away from the other tubular portion 12; and a step of fixing the other tubular portion 12 to the other side surface 4 while moving it away from the one tubular portion 11, the manhole reinforcement hardware 10 can be attached to the manhole 2, making it easy to reinforce the manhole 2. Furthermore, because the length between the pair of tubular portions 11, 12 can be adjusted by moving one or the other tubular portion 11, 12, the manhole reinforcement hardware 10 can be attached between one side surface 3 and the other side surface 4 of the manhole 2 using the same attachment method, regardless of the size of the manhole 2, thereby improving versatility.
また、本体筒部１１ａ，１２ａは単管パイプによって構成され、その他の部位を構成する金物類も、ボルトやナット、金属板なども全て一般流通品であり、本実施形態における人通口補強金物１０は、これら一般流通品の組み合わせで製造できる。そのため、専用の部品を製造する必要がなくなるので、製造に係るコストを低減できる。 Furthermore, the main cylindrical portions 11a and 12a are made from single-tube pipes, and the hardware that makes up the other parts, including bolts, nuts, and metal plates, are all commercially available products. The manhole reinforcement hardware 10 in this embodiment can be manufactured from a combination of these commonly available products. This eliminates the need to manufacture specialized parts, thereby reducing manufacturing costs.
１ 立ち上がり部
２ 人通口
３ 左側面
４ 右側面
５ 底面
６ 内部鉄筋
１０ 人通口補強金物
１１ 筒状部
１１ａ 本体筒部
１１ｂ 第一環状板部
１１ｃ 第一ナット部材
１１ｄ 第二環状板部
１１ｅ 第二ボルト部材
１２ 筒状部
１２ａ 本体筒部
１２ｂ 第一環状板部
１２ｃ 第一ナット部材
１２ｄ 第二環状板部
１２ｅ 第二ボルト部材
１３ 連結部：第一ボルト部材
１３ａ 長さ方向一端部
１３ｂ 長さ方向他端部
１４ 操作受付部：第二ナット部材
１５ 被固定部：インサート部材
１５ａ 接続部
１６ 被固定部：インサート部材
１６ａ 接続部
1 Rising portion 2 Manway 3 Left side surface 4 Right side surface 5 Bottom surface 6 Internal steel bar 10 Manway reinforcing hardware 11 Cylindrical portion 11a Main body cylindrical portion 11b First annular plate portion 11c First nut member 11d Second annular plate portion 11e Second bolt member 12 Cylindrical portion 12a Main body cylindrical portion 12b First annular plate portion 12c First nut member 12d Second annular plate portion 12e Second bolt member 13 Connecting portion: First bolt member 13a One end portion in the longitudinal direction 13b The other end portion in the longitudinal direction 14 Operation receiving portion: Second nut member 15 Fixed portion: Insert member 15a Connection portion 16 Fixed portion: Insert member 16a Connection portion
Claims (6)
前記一方の側面と前記他方の側面のそれぞれに固定される一対の筒状部と、
前記一対の筒状部間に架け渡されるとともに、前記一対の筒状部同士を連結する棒状の連結部と、を備えており、
前記連結部の長さ方向一端部は、前記一対の筒状部のうち一方の筒状部の内部に対して進退可能に挿入され、前記連結部の長さ方向他端部は、前記一対の筒状部のうち他方の筒状部の内部に対して進退可能に挿入されており、
前記連結部は、第一ボルト部材によって構成されており、
前記筒状部は、
本体筒部と、
中央に前記第一ボルト部材が通される孔が形成され、前記本体筒部のうち前記第一ボルト部材側の端部に一体に設けられた第一環状板部と、
前記第一環状板部の内側面に一体に設けられ、前記第一ボルト部材がねじ込まれる第一ナット部材と、を有していることを特徴とする人通口補強金物。 A manway reinforcing hardware that is installed between one side and the other side of a manway formed in the rising part of a building foundation,
a pair of cylindrical portions fixed to the one side surface and the other side surface, respectively;
a rod-shaped connecting portion that is bridged between the pair of cylindrical portions and connects the pair of cylindrical portions to each other,
one end of the connecting portion in the length direction is inserted into one of the pair of cylindrical portions so as to be able to advance and retreat, and the other end of the connecting portion in the length direction is inserted into the other of the pair of cylindrical portions so as to be able to advance and retreat ,
The connecting portion is constituted by a first bolt member,
The cylindrical portion is
A main body cylindrical portion;
a first annular plate portion having a hole formed at the center thereof through which the first bolt member is passed, the first annular plate portion being integrally provided at an end portion of the main body cylindrical portion on the first bolt member side;
A manway reinforcement hardware characterized by having a first nut member integrally formed on the inner surface of the first annular plate portion and into which the first bolt member is screwed .
前記一方の側面と前記他方の側面にそれぞれ設けられて、前記一対の筒状部がそれぞれ固定される一対の被固定部を更に備えており、
前記筒状部は、
中央に孔が形成され、前記本体筒部のうち前記人通口の前記側面側の端部に一体に設けられた第二環状板部と、
前記第二環状板部の内側面に一体に設けられ、先端部が、前記第二環状板部における中央の孔から前記人通口の前記側面に向かって突出する第二ボルト部材と、を有しており、
前記被固定部は、内部に雌ネジが形成された筒状のインサート部材によって構成されていることを特徴とする人通口補強金物。 The reinforcement metal fitting for a pedestrian passage according to claim 1 ,
The housing further includes a pair of fixed portions provided on the one side surface and the other side surface, to which the pair of cylindrical portions are fixed, respectively,
The cylindrical portion is
A second annular plate portion having a hole formed in the center and integrally provided at the end portion of the main body cylindrical portion on the side surface of the manway;
a second bolt member integrally formed on the inner surface of the second annular plate portion, the second bolt member having a tip end protruding from a central hole in the second annular plate portion toward the side surface of the manway;
A manway reinforcement hardware characterized in that the fixed part is composed of a cylindrical insert member having a female thread formed inside.
前記被固定部は、前記立ち上がり部の内部鉄筋に接続される接続部を有することを特徴とする人通口補強金物。 The pedestrian entrance reinforcing hardware according to claim 2 ,
A manway reinforcement hardware characterized in that the fixed portion has a connection portion that is connected to the internal reinforcing bars of the rising portion.
前記第一ボルト部材に設けられて、当該第一ボルト部材を軸回りに回転動作させるための操作を受け付ける操作受付部を更に備えることを特徴とする人通口補強金物。 The reinforcement metal fitting for a pedestrian passage according to claim 1 ,
A manway reinforcement hardware characterized by further comprising an operation receiving portion provided on the first bolt member that receives operations to rotate the first bolt member around its axis.
前記一方の筒状部は前記一方の側面に固定され、
前記他方の筒状部は前記他方の側面に固定され、
前記連結部は、前記一対の筒状部間に架け渡されるとともに、前記一対の筒状部同士を連結しており、
前記連結部の長さ方向一端部は、前記一方の筒状部の内部に挿入され、前記連結部の長さ方向他端部は、前記他方の筒状部の内部に挿入され、前記連結部の前記長さ方向一端部と前記長さ方向他端部が、前記一対の筒状部の内部に対して交互に進退可能となっていることを特徴とする人通口補強構造。 The manway reinforcing hardware according to any one of claims 1 to 4 is attached between the one side surface and the other side surface of the manway,
the one cylindrical portion is fixed to the one side surface,
the other cylindrical portion is fixed to the other side surface,
the connecting portion is bridged between the pair of cylindrical portions and connects the pair of cylindrical portions to each other,
A human passage reinforcement structure characterized in that one longitudinal end of the connecting portion is inserted into the interior of one of the cylindrical portions, and the other longitudinal end of the connecting portion is inserted into the interior of the other cylindrical portion, and the one longitudinal end and the other longitudinal end of the connecting portion can move alternately forward and backward into the interior of the pair of cylindrical portions.
前記連結部の前記長さ方向一端部が内部に挿入された前記一方の筒状部を、前記他方の筒状部から離間する方向に移動させながら前記一方の側面に固定する工程と、
前記連結部の前記長さ方向他端部が内部に挿入された前記他方の筒状部を、前記一方の筒状部から離間する方向に移動させながら前記他方の側面に固定する工程と、のうち少なくとも一方の工程を有することを特徴とする人通口補強方法。 A method for reinforcing a pedestrian entrance using the pedestrian entrance reinforcement hardware according to any one of claims 1 to 4 ,
a step of fixing the one cylindrical portion, into which the one longitudinal end of the connecting portion is inserted, to the one side surface while moving the one cylindrical portion in a direction away from the other cylindrical portion;
a step of fixing the other cylindrical portion, into which the other longitudinal end of the connecting portion has been inserted, to the other side surface while moving the other cylindrical portion in a direction away from the one cylindrical portion.
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| JP2001348883A (en) | 2000-06-06 | 2001-12-21 | Marusho:Kk | Inspection opening structure for house foundation and its construction method |
| JP2009097249A (en) | 2007-10-17 | 2009-05-07 | Yasuhiro Matsuzaki | Method for forming inspection opening in cloth foundation and opening reinforcing unit |
| JP2017155576A (en) | 2016-02-26 | 2017-09-07 | 育弘 松崎 | Opening reinforcement unit |
| JP2017186824A (en) | 2016-04-07 | 2017-10-12 | 一般社団法人日本住宅基礎鉄筋工業会 | Reinforcement structure of concrete foundation having human passage hole and formation method thereof |
| JP2021156087A (en) | 2020-03-30 | 2021-10-07 | 大和ハウス工業株式会社 | Continuous footing |
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2022
- 2022-09-30 JP JP2022158139A patent/JP7762912B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001348883A (en) | 2000-06-06 | 2001-12-21 | Marusho:Kk | Inspection opening structure for house foundation and its construction method |
| JP2009097249A (en) | 2007-10-17 | 2009-05-07 | Yasuhiro Matsuzaki | Method for forming inspection opening in cloth foundation and opening reinforcing unit |
| JP2017155576A (en) | 2016-02-26 | 2017-09-07 | 育弘 松崎 | Opening reinforcement unit |
| JP2017186824A (en) | 2016-04-07 | 2017-10-12 | 一般社団法人日本住宅基礎鉄筋工業会 | Reinforcement structure of concrete foundation having human passage hole and formation method thereof |
| JP2021156087A (en) | 2020-03-30 | 2021-10-07 | 大和ハウス工業株式会社 | Continuous footing |
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| JP2024051804A (en) | 2024-04-11 |
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