JP3098695U - Reinforcement structure replacing H-shaped steel stiffener - Google Patents

Reinforcement structure replacing H-shaped steel stiffener Download PDF

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Publication number
JP3098695U
JP3098695U JP2003003653U JP2003003653U JP3098695U JP 3098695 U JP3098695 U JP 3098695U JP 2003003653 U JP2003003653 U JP 2003003653U JP 2003003653 U JP2003003653 U JP 2003003653U JP 3098695 U JP3098695 U JP 3098695U
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Japan
Prior art keywords
base member
shaped steel
pipe
stiffener
nut
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Japanese (ja)
Inventor
福本 怜央
下田 一美
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INTERNATIONAL LABORATORY CORPORATION
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INTERNATIONAL LABORATORY CORPORATION
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Abstract

【課  題】腹起し材が有する形態上の特性を巧く利用すると共に、専用ジャッキのように高価に付くことのない構造によって、従来のスティフナーや専用ジャッキに代わる補強構造を提供すること。
【解決手段】腹起し材2のH形鋼に予め明けられている穴などに係止されて落下を防ぐ構成を有するベース部材12L,12Rと、該ベース部材12L,12Rに立設したパイプ13と、前記ベース部材12L,12Rと同じ別のベース部材12L,12Rに立設し、前記パイプの内径に遊嵌されるネジ付き鋼棒14と、そのネジ14aに螺合されたナット部材15とにより簡易ジャッキ状に形成したこと。
【選択図】  図6
PROBLEM TO BE SOLVED: To provide a reinforcing structure that can replace conventional stiffeners and dedicated jacks by utilizing the morphological characteristics of the protruding material and by using a structure that is not expensive like a dedicated jack.
A base member (12L, 12R) having a configuration for preventing falling by being locked in a hole or the like previously drilled in an H-shaped steel of a belly member (2), and a pipe standing on the base member (12L, 12R). 13, a threaded steel rod 14 that stands upright on another base member 12L, 12R that is the same as the base member 12L, 12R, and is loosely fitted to the inside diameter of the pipe, and a nut member 15 that is screwed into the screw 14a. And a simple jack shape.
[Selection] Fig. 6

Description

【0001】
【考案の属する技術分野】
本考案は土留め工法において親杭などとして使用するGH型鋼に施されているスティフナーに代替される補強構造物に関する。
【0002】
【従来の技術】
従来より、構築物を造ったり管などを埋設するために地盤を堀削する場合、堀削部が崩れないように、予めH形鋼による親杭を適宜間隔で打設し、この杭に横矢板をかまして土留め壁を形成することが行われている。
【0003】
一般的な土留め壁は、図1に断面で、図2に平面で例示したように、主として垂直に打込まれたH形鋼による複数本の親杭1と、各杭1の間を水平方向で結合する腹起し材2と、前記各杭1が倒れないように、前記腹起し材2を突張る梁部材3を使用して構成される。前記梁部材3は当業者においては切梁3と呼ばれており、当該切梁3は、正確な据付と取外す時に便利なように、長さ方向の中間に伸縮するジャッキ4を介在させているのが一般的である。
【0004】
地山の崩壊を防ぐための土留め壁において、夫々にH形鋼を使用している杭1、腹起し2、切梁3のうち、H形鋼の断面形状から来る性能により、杭1と腹起し材2と切梁3が接合している部分における腹起し材2のH形鋼のウェブ2bの部分が最も耐力が小さいことが知られている。
【0005】
即ち、前記腹起し材2のウェブ2bに過度な力が加わると、他の部分は耐えてもウェブ2bが座屈,変形する恐れがある(図3参照)。このため、従来は前記ウェブ2bを補強する目的でスティフナー5と呼ばれる補強鉄板を溶接して設けている(図4、図5参照)が、以下に述べるような問題がある。
【0006】
従来のスティフナー5は、足場が悪く、野外の施工現場でその都度溶接で取付けているため、多大な手間とコストがかかるのみならず、一般的に腹起し材2のH形鋼は、仮設工であるためレンタル品やリース品が殆んどであり、このため仮設工事が終了して借受けたH形鋼を返却するときには、このスティフナー5を全て除去する必要があって、その手間とコストが更にかかるのである。
【0007】
この点に鑑み、従来技術では前記スティフナー5の代わりに着脱できる専用ジャッキ(図示せず)を腹起し材2のH形鋼のフランジ部2aに装着するという方法を採ることもあるが、専用ジャッキは専用品として設計,製作されているので、スティフナーに使う鉄板に比べればはるかに高価である。
【0008】
【考案が解決しようとする課題】
本考案は、上述した腹起し材におけるスティフナーの問題点、及び、該スティフナーに代えて用いられている専用ジャッキの問題点の双方に鑑み、腹起し材が有する形態上の特性を巧く利用すると共に、専用ジャッキのように高価に付くことのない構造によって、従来のスティフナーや専用ジャッキに代わる補強構造を提供することをその課題とするものである。
【0009】
【課題を解決するための手段】
上記課題を解決することを目的としてなされた本考案補強構造の構成は、腹起し材のH形鋼に予め明けられている穴などに係止されて落下を防ぐ構成を有するベース部材と、該ベース部材に立設したパイプと、前記ベース部材と同じ別のベース部材に立設し、前記パイプの内径に遊嵌されるネジ付き鋼棒と、そのネジに螺合されたナット部材とにより簡易ジャッキ状に形成したことを特徴とするものである。
【0010】
上記において、使用するナット部材は、鋼棒とパイプのズレを防ぐため、ナット部材の片面側にパイプの外径が嵌まり込む溝を設けることが望ましい。
【0011】
【考案の実施の形態】
次に、上記本考案補強構造の実施の形態例について図を参照しつつ説明する。図1は親杭,腹起し材,切梁,矢板,ジャッキを使用した公知の土留め工法の概略を例示した断面図、図2は図1の土留め工法の要部の平面図、図3は図1,図2の土留め工法において使用した腹起し材のフランジ部の問題点を説明するための正断面図、図4は図3のウェブ部の問題点を解決するために使用されているスティフナーを説明するための正断面図、図5は図4の平面図、図6は図4,図5のスティフナーに代えて使用する本考案補強構造の例を説明するための正断面図である。
【0012】
図6において、11は、上述した腹起し材2などに用いられるH形鋼で、11a,11bは該形鋼11の左,右のフランジ部、11cは両フランジ部11a,11bを両者の中間で結合しているウェブ部である。
【0013】
上記H形鋼11を、一例として土留め工法における腹起し材2として用いたとき、両フランジ部11a,11bの切梁(図6に示さず)に対面している側にその切梁を通して土圧がかかると、ウェブ部11cが座屈したり変形することは、先の図3により説明した通りであり、従って、従来は両フランジ部11a,11bの間に鉄板製のスティフナー5を溶接していたことは、図4,図5により説明した通りである、
【0014】
そこで本考案では、着脱操作が容易であると共に、装着すれば容易には脱落等のないいわば簡易ジャッキ状の補強構造を、ベース部材12L,12Rとパイプ材13と鋼製のネジ付き杆体14とナット部材15により形成すると共に、H形鋼のフランジ部11a,11bに予め設けてある穴11dを利用して前記ベース部材12L,12Rを係止することにより、このジャッキ様の補強構造を、H形鋼11の両フランジ部11a,11bの間に、着脱は容易である一方、装着すれば脱落しにくい態様で取付けるようにしたものである。以下、この点について詳しく述べる。
【0015】
本考案補強構造における一方のベース部材12Lは、一例として小さ目の矩形(1辺約100mm以上)の鉄板の一側を裏面側に略90度曲げた折曲片12aに形成すると共に、他側裏面であってフランジ部11a又は11bに予め明けられている小穴11dに対応する部位に、ダボ状の突起12bを設けて形成されている。他方のベース部材12Rも、前記ベース部材12Lと対称的に折曲片12aと突起12bを具備している。
【0016】
一方のベース部材12Lの表面側には、内径が約40〜50φmm程度、肉厚が約8〜10mm程度で長さ約200〜250mmぐらいのパイプ材13が溶接より固着されている。前記ベース部材12Lと同形状の他方のベース部材12Rの表面側には、前記パイプ材13の穴に悠に挿入できる40〜50φmm程度で長さが250mm以上の鋼棒であって、先端側に雄ネジ14aを切ったネジ杆体14がその根元を溶接して立設されている。
【0017】
前記ネジ杆体14のネジ部14aには、パイプ材13に対向した面を凹状部15aに形成したナット部材15が螺装されており、以上のベース部材12L,12Rからナット部材15までの構成によって、本考案における一例の補強構造Aを形成する。
【0018】
上記の補強構造Aは、ナット部材15を後退(図6の右側)させた状態で、左右のベース部材12L,12RをH形鋼11の左右フランジ部の間に挿入し、両ベース部材12Lと12Rの折曲部12aと12aを、夫々にフランジ部11a,11bの端部に合わせると共に、夫々の突起12bと12bを、フランジ部11a,11bの小穴11dと11dに入れることにより、左右の両ベース部材12L,12Rをフランジ部11a,11bに仮止めし、この状態でナット部材5を回転してネジ杆体14の左方へ進出させてその凹部15aをパイプ材13の先端に嵌合させ、更に少しナット部材15を進出側に回転することにより、パイプ材13とネジ杆体14とによってフランジ部11a,11bを内側から外側へ向け突張ることにより、ウェブ部11cを補強するのである。
【0019】
従って、上記補強構造Aを取外すには、ナット部材15を後退側へ回転させることにより、両ベース部材12L,12Rをフランジ部11a,11bから容易に取外すことができる。
【0020】
上述した本考案補強構造Aは、図6に例示した別の構成の本考案補強構造Bに代替することができ、この補強構造Bによっても、上記の補強構造Aと同様の効果を得ることができる。
【0021】
図6に示した別例の補強構造Bは、先端側にナットと同様の雌ネジ部16を設けたパイプ材13の2本を、左右のベース部材12L,12Rの表面に溶接等により対向させて立設し、左,右のパイプ材13と13の雌ネジ部16と16に、左,右でネジの向きが逆の雄ネジ17a,17bを形成したネジ棒17をその両側のネジ17a,17bにおいて夫々に螺合させ、ネジ棒17を正,逆回転させることにより、両フランジ部11a,11bを内面側から突張ったり、両フランジ部11a,11bから取外すことができるように形成されている。
【0022】
なお、ネジ棒17の中間部には、この棒17を回転させるための角ナット部を形成したり、短い棒状のハンドル(いずれも図示せず)を設けることが望ましい。また、この補強構造Bにおいて、補強構造Aと同一符号は同一部材を示すものとする。更に、ベース部材12L,12Rの突起12bに代え、当該ベース部材12L,12Rを切起こした切起し突起12b′とすることもできる。上記の補強構造Bでは切起し突起12b′を用いている。
【0023】
【考案の効果】
本考案は以上の通りであって、H形鋼によるH形鋼の腹起し材が有する形態上の特性を巧く利用すると共に、専用ジャッキのように高価に付くことのない構造によって、従来のスティフナーや専用ジャッキに代わるH形鋼のウェブ部の補強構造を提供するため、腹起し材のH形鋼に予め明けられている穴などに係止されて落下を防ぐ構成を有するプレート状のベース部材と、該ベース部材に立設したパイプと、前記ベース部材と同じ別のベース部材に立設され前記パイプの内径に遊嵌されるネジ付き鋼棒と、そのネジに螺合されたナット部材とにより、補強構造を簡易ジャッキ状に形成したから、従来のスティフナーの溶接取付けや溶断取外しに比べ、着脱手間を著しく削減することができ、また専用ジャッキに比べても構造が至って簡単で容易に作成でき、しかも、取扱いが簡便であるという利点が得られる。
【図面の簡単な説明】
【図1】親杭,腹起し材,切梁,矢板,ジャッキを使用した公知の土留め工法の概略を例示した断面図
【図2】図1の土留め工法の要部の平面図
【図3】図1,図2の土留め工法において使用した腹起し材のフランジ部の問題点を説明するための正断面図
【図4】図3のフランジ部の問題点を解決するために使用されているスティフナーを説明するための正断面図
【図5】図4の平面図
【図6】図4,図5のスティフナーに代えて使用する本考案補強構造の例を説明するための正断面図
【符号の説明】
1    親杭
2    腹起し材
3    梁部材
4    ジャッキ
11    H形鋼
11a,11b フランジ部
11c    ウェブ部
12L,12R 左右のベース部材
13    左,右のパイプ材
14    ネジ杆体
15    ナット部材
16    雌ネジ部
[0001]
[Technical field to which the invention belongs]
The present invention relates to a reinforcing structure that is used in place of a stiffener applied to GH steel used as a parent pile or the like in an earth retaining method.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, when excavating the ground to construct a structure or bury a pipe or the like, a parent pile made of H-section steel is previously cast at appropriate intervals so that the excavated portion does not collapse, and a horizontal sheet pile is inserted into this pile. To form an earth retaining wall.
[0003]
As shown in a cross-section in FIG. 1 and a plane in FIG. 2, a general retaining wall has a plurality of parent piles 1 mainly made of H-beams which are driven vertically, and a horizontal space between the piles 1. It is configured using a flared material 2 that is joined in a direction, and a beam member 3 that projects the flared material 2 so that each of the piles 1 does not fall down. The beam member 3 is referred to as a cutting beam 3 by those skilled in the art, and the cutting beam 3 has a jack 4 that extends and contracts in the middle of the length direction, which is convenient for accurate installation and removal. It is common.
[0004]
In the retaining wall for preventing the collapse of the ground, in the pile 1, the bulge 2, and the cutting beam 3, each of which uses the H-shaped steel, the pile 1 It is known that the portion of the web 2b of the H-shaped steel of the web member 2 at the portion where the web member 2 and the cutting beam 3 are joined has the smallest proof stress.
[0005]
That is, if an excessive force is applied to the web 2b of the belly member 2, the web 2b may buckle or deform even if the other portions endure (see FIG. 3). For this reason, conventionally, a reinforcing iron plate called a stiffener 5 is provided by welding for the purpose of reinforcing the web 2b (see FIGS. 4 and 5), but has the following problems.
[0006]
The conventional stiffener 5 has a poor scaffolding and is welded each time at an outdoor construction site, so that not only does it require a great deal of labor and cost, but also, in general, the H-shaped steel of the bulging material 2 is temporarily installed. Most of the stiffeners are leased or leased, and when returning the borrowed H-section after the temporary construction work, it is necessary to remove all of the stiffeners 5, which is troublesome and costly. It takes even more.
[0007]
In view of this point, in the prior art, a method of mounting a detachable jack (not shown) in place of the stiffener 5 on the H-shaped steel flange portion 2a of the protruding member 2 may be adopted. The jack is designed and manufactured as a dedicated product and is much more expensive than the iron plate used for the stiffener.
[0008]
[Problems to be solved by the invention]
The present invention takes into account both the problem of the stiffener in the above-mentioned stiffener and the problem of a dedicated jack used in place of the stiffener, and takes advantage of the morphological characteristics of the flared material. It is an object of the present invention to provide a reinforcing structure that can be used and replaces a conventional stiffener or a dedicated jack by a structure that is not attached at a high cost like a dedicated jack.
[0009]
[Means for Solving the Problems]
The configuration of the reinforcing structure of the present invention made for the purpose of solving the above-mentioned problem includes a base member having a configuration in which it is locked by a hole or the like previously drilled in the H-shaped steel of the protruding material to prevent falling, and A pipe erected on the base member, a threaded steel rod erected on the same other base member as the base member and loosely fitted to the inner diameter of the pipe, and a nut member screwed to the screw It is characterized by being formed in a simple jack shape.
[0010]
In the above, the nut member to be used is desirably provided with a groove in which the outer diameter of the pipe fits on one side of the nut member in order to prevent a deviation between the steel rod and the pipe.
[0011]
[Embodiment of the invention]
Next, an embodiment of the reinforcing structure of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view illustrating the outline of a known earth retaining method using a parent pile, an uplifting material, a cutting beam, a sheet pile, and a jack. FIG. 2 is a plan view of a main part of the earth retaining method of FIG. 3 is a front sectional view for explaining the problem of the flange portion of the flared material used in the earth retaining method of FIGS. 1 and 2, and FIG. 4 is used for solving the problem of the web portion of FIG. FIG. 5 is a plan view of FIG. 4, and FIG. 6 is a front sectional view of an example of the reinforcing structure of the present invention used in place of the stiffener of FIGS. FIG.
[0012]
In FIG. 6, reference numeral 11 denotes an H-shaped steel used for the above-mentioned flared material 2 and the like, 11a and 11b denote left and right flange portions of the shaped steel 11, and 11c denotes a pair of flange portions 11a and 11b. It is a web part that is joined in the middle.
[0013]
When the H-section steel 11 is used as the flared material 2 in the earth retaining method as an example, the cut beams are passed through the cut beams (not shown in FIG. 6) of both flange portions 11a and 11b. When the earth pressure is applied, the buckling or deformation of the web portion 11c is as described with reference to FIG. 3. Therefore, conventionally, the stiffener 5 made of an iron plate is welded between the flange portions 11a and 11b. That is, as described with reference to FIGS. 4 and 5,
[0014]
Therefore, in the present invention, a so-called simple jack-like reinforcing structure that is easy to attach and detach, and does not easily fall off when installed, is provided with a base member 12L, 12R, a pipe member 13, a steel threaded rod 14, and the like. The jack-like reinforcement structure is formed by the nut member 15 and by locking the base members 12L and 12R using holes 11d provided in the flange portions 11a and 11b of the H-section steel in advance. The attachment and detachment between the flange portions 11a and 11b of the section steel 11 is easy, but the attachment is made in such a manner that it is hard to fall off when attached. Hereinafter, this point will be described in detail.
[0015]
The one base member 12L in the reinforcing structure of the present invention is formed as a bent piece 12a obtained by bending one side of a small rectangular (one side of about 100 mm or more) iron plate by approximately 90 degrees toward the back surface, and the other back surface. A dowel-shaped projection 12b is provided at a portion corresponding to a small hole 11d previously drilled in the flange portion 11a or 11b. The other base member 12R also includes a bent piece 12a and a protrusion 12b symmetrically to the base member 12L.
[0016]
A pipe member 13 having an inner diameter of about 40 to 50 mm, a wall thickness of about 8 to 10 mm, and a length of about 200 to 250 mm is fixed to the front side of one base member 12L by welding. On the surface side of the other base member 12R having the same shape as the base member 12L, a steel rod having a length of about 250 mm or more and having a length of about 40 to 50 mm that can be easily inserted into a hole of the pipe member 13 is provided. A threaded rod 14 having an external thread 14a is set up by welding its root.
[0017]
A nut member 15 having a surface facing the pipe material 13 formed in a concave portion 15a is screwed into the threaded portion 14a of the threaded rod 14, and the nut member 15 has a configuration from the base members 12L, 12R to the nut member 15 described above. The reinforcing structure A according to the present invention is formed as an example.
[0018]
In the above-described reinforcing structure A, the left and right base members 12L and 12R are inserted between the left and right flange portions of the H-section steel 11 in a state where the nut member 15 is retracted (the right side in FIG. 6). The bent portions 12a and 12a of the 12R are fitted to the ends of the flange portions 11a and 11b, respectively, and the respective projections 12b and 12b are inserted into the small holes 11d and 11d of the flange portions 11a and 11b, so that both the left and right sides are formed. The base members 12L, 12R are temporarily fixed to the flange portions 11a, 11b, and in this state, the nut member 5 is rotated to advance to the left of the threaded rod 14, and the concave portion 15a is fitted to the tip of the pipe material 13, By further rotating the nut member 15 to the advance side, the flanges 11a and 11b are projected from the inside to the outside by the pipe material 13 and the threaded rod 14, thereby It is to reinforce the E blanking portion 11c.
[0019]
Therefore, to remove the reinforcing structure A, the two base members 12L and 12R can be easily removed from the flange portions 11a and 11b by rotating the nut member 15 to the retreat side.
[0020]
The above-described reinforcing structure A of the present invention can be replaced with the reinforcing structure B of the present invention having another configuration illustrated in FIG. 6, and the same effect as the above-described reinforcing structure A can be obtained by the reinforcing structure B. it can.
[0021]
In a reinforcement structure B of another example shown in FIG. 6, two pipe members 13 provided with female threads 16 similar to nuts on the tip side are opposed to the surfaces of the left and right base members 12L and 12R by welding or the like. A threaded rod 17 having male screws 17a, 17b with left and right screw directions opposite to each other is formed on female screw portions 16 and 16 of the left and right pipe members 13 and 13, respectively. , 17b, respectively, and by rotating the screw rod 17 forward and backward, the flange portions 11a, 11b can be protruded from the inner surface side and can be removed from the flange portions 11a, 11b. ing.
[0022]
It is desirable to form a square nut for rotating the screw rod 17 or to provide a short rod-shaped handle (neither is shown) in the middle of the screw rod 17. In the reinforcing structure B, the same reference numerals as those in the reinforcing structure A indicate the same members. Further, instead of the protrusions 12b of the base members 12L and 12R, the base members 12L and 12R may be formed as cut-and-raised protrusions 12b '. In the above-described reinforcing structure B, the cut-and-raised projection 12b 'is used.
[0023]
[Effect of the invention]
As described above, the present invention utilizes the morphological characteristics of the H-shaped steel flared material of the H-shaped steel and uses a structure that is not expensive like a special jack. A plate-like structure that is locked by holes previously drilled in the H-shaped steel of the bulging material to prevent it from falling, in order to provide a reinforcement structure of the H-shaped steel web part that replaces the stiffener and dedicated jack A base member, a pipe erected on the base member, a threaded steel rod erected on the same base member as the base member and loosely fitted to the inner diameter of the pipe, and screwed to the screw. The nut structure allows the reinforcement structure to be formed in a simple jack shape, significantly reducing the amount of time required for mounting and dismounting compared to conventional stiffener welding and fusing and removing, and the structure is very simple compared to the dedicated jack. It can be created easily, moreover, has the advantage that the handling is simple to obtain.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view schematically illustrating a known earth retaining method using a parent pile, an uplifting material, a cutting beam, a sheet pile, and a jack. FIG. 2 is a plan view of a main part of the earth retaining method of FIG. FIG. 3 is a front cross-sectional view for explaining a problem of a flange portion of the flared material used in the earth retaining method shown in FIGS. 1 and 2. [FIG. 4] To solve a problem of the flange portion of FIG. FIG. 5 is a front sectional view for explaining a stiffener used. FIG. 5 is a plan view of FIG. 4. FIG. 6 is a front view for explaining an example of a reinforcing structure of the present invention used in place of the stiffener of FIGS. Cross-sectional view [Description of symbols]
DESCRIPTION OF SYMBOLS 1 Parent pile 2 Belly raising material 3 Beam member 4 Jack 11 H-section steel 11a, 11b Flange part 11c Web part 12L, 12R Left and right base members 13 Left and right pipe materials 14 Screw rod 15 Nut member 16 Female screw part

Claims (3)

腹起し材のH形鋼に予め明けられている穴などに係止されて落下を防ぐ構成を有するベース部材と、該ベース部材に立設したパイプと、前記ベース部材と同じ別のベース部材に立設され、前記パイプの内径に遊嵌されるネジ付き鋼棒と、そのネジに螺合されたナット部材とにより簡易ジャッキ状に形成したことを特徴とするH形鋼のスティフナーに代わる補強構造。A base member configured to be locked in a hole or the like preliminarily drilled in the H-shaped steel of the bulging member to prevent the base member from falling, a pipe erected on the base member, and another base member same as the base member Characterized in that it is formed in a simple jack shape by a threaded steel rod that is loosely fitted to the inside diameter of the pipe and a nut member screwed to the thread, and is replaced with an H-shaped steel stiffener instead of a stiffener. Construction. ナット部材はパイプの対向面に凹部を形成した請求項1の補強構造。2. The reinforcing structure according to claim 1, wherein the nut member has a concave portion formed on an opposite surface of the pipe. 腹起し材のH形鋼に予め明けられている穴などに係止されて落下防止構成を有する2枚のベース部材と、両ベース部材に対向して立設され前端部にナット部を形成した2本のパイプと、両パイプのナット部に螺合され正逆回転により前記パイプを離間させるか接近させるネジ棒とにより、簡易ジャッキ状に形成したことを特徴とする補強構造。Two base members locked in holes or the like preliminarily drilled in the H-shaped steel of the bulging material and having a fall prevention structure, and a nut portion is formed at the front end by standing upright on both base members. A reinforcement structure formed of two simple pipes and a screw rod which is screwed into a nut portion of both pipes to separate or approach the pipes by forward / reverse rotation.
JP2003003653U 2003-06-20 2003-06-20 Reinforcement structure replacing H-shaped steel stiffener Expired - Fee Related JP3098695U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009132474A (en) * 2007-11-28 2009-06-18 Shimizu Corp Mounting device of climbing frame
JP2016211345A (en) * 2015-05-14 2016-12-15 東日本旅客鉄道株式会社 Structure and method for reinforcing steel girder
JP2016223129A (en) * 2015-05-29 2016-12-28 東日本旅客鉄道株式会社 Steel girder reinforcement structure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009132474A (en) * 2007-11-28 2009-06-18 Shimizu Corp Mounting device of climbing frame
JP2016211345A (en) * 2015-05-14 2016-12-15 東日本旅客鉄道株式会社 Structure and method for reinforcing steel girder
JP2016223129A (en) * 2015-05-29 2016-12-28 東日本旅客鉄道株式会社 Steel girder reinforcement structure

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