JP2012251411A - Buffer rubber for bridge fall prevention system - Google Patents

Buffer rubber for bridge fall prevention system Download PDF

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Publication number
JP2012251411A
JP2012251411A JP2011137814A JP2011137814A JP2012251411A JP 2012251411 A JP2012251411 A JP 2012251411A JP 2011137814 A JP2011137814 A JP 2011137814A JP 2011137814 A JP2011137814 A JP 2011137814A JP 2012251411 A JP2012251411 A JP 2012251411A
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Prior art keywords
buffer rubber
rubber
bridge
concrete wall
prevention system
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JP2011137814A
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Japanese (ja)
Inventor
Hohide Akagi
穂秀 赤木
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Sanka Corp
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Sanka Corp
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Priority to JP2011137814A priority Critical patent/JP2012251411A/en
Publication of JP2012251411A publication Critical patent/JP2012251411A/en
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Abstract

PROBLEM TO BE SOLVED: To provide a buffer rubber for use in a bridge fall prevention system for a bridge, which can be installed even in a narrow attachment space.SOLUTION: An attachment steel plate 8 for hanging is attached to a buffer rubber 4 in which a bolt 7 is embedded and fixed in a bonded state, and integrated therewith by being tightened with a nut 9. The installation of the buffer rubber 4 on a concrete wall 3 installed on a bridge pier is performed by fixing the attachment steel plate 8 to the concrete wall 3 by means of an anchor bolt 10 and the like. In that case, a position 12 to bend the attachment steel plate 8 is changed so that an installation position can be freely adjusted and so that the buffer rubber 4 can be installed in a predetermined position.

Description

本発明は、橋梁用落橋防止システムに用いる緩衝ゴムの取付構造に関する。  The present invention relates to a shock absorber mounting structure used for a bridge drop prevention system.

従来の落橋防止システムに用いる緩衝ゴムは、鋼製ブラケットやコンクリート壁にボルトや接着剤で固定設置するものがある(例えば、非特許文献1を参照。)。  There is a buffer rubber used in a conventional fallen bridge prevention system that is fixed to a steel bracket or a concrete wall with a bolt or an adhesive (for example, see Non-Patent Document 1).

図1により落橋防止システムに用いる緩衝ゴムの機能について説明する。図1において、橋脚2上に設置されたコンクリート壁3に緩衝ゴム4が設置されている。地震等により主桁5に移動が発生した場合、横桁1がコンクリート壁3に衝突・抵抗して橋梁の主桁5が橋脚2上から逸脱して落橋することを防止するための構造を落橋防止システムと呼んでいる。この衝突の際、構造物の衝撃による損壊を緩和することを目的として、コンクリート壁3に緩衝ゴム4を設置している。  The function of the shock absorbing rubber used for the falling bridge prevention system will be described with reference to FIG. In FIG. 1, a buffer rubber 4 is installed on a concrete wall 3 installed on a pier 2. When the main girder 5 is moved due to an earthquake or the like, a structure that prevents the main girder 5 of the bridge from deviating from the pier 2 and falling off due to the cross girder 1 colliding with and resisting the concrete wall 3 is dropped. This is called a prevention system. In the event of this collision, a buffer rubber 4 is installed on the concrete wall 3 in order to mitigate damage caused by the impact of the structure.

図2において、従来の緩衝ゴム4の一般的な取り付け方法の詳細を示している。コンクリート壁3に緩衝ゴム4を取り付けるために、緩衝ゴム4に段穴加工6を施し、ボルト5が緩衝ゴム4から突出しないようにしている。また、緩衝ゴム4に接着剤を塗布して直接コンクリート壁3に接着して取り付ける場合もある。
In FIG. 2, the detail of the general attachment method of the conventional shock absorbing rubber 4 is shown. In order to attach the buffer rubber 4 to the concrete wall 3, a step hole processing 6 is applied to the buffer rubber 4 so that the bolt 5 does not protrude from the buffer rubber 4. In some cases, an adhesive may be applied to the buffer rubber 4 to directly adhere to the concrete wall 3.

以上に述べたような取り付け方法では、コンクリート壁3又は鋼製ブラケットなどと橋梁の横桁1が近接している場合、取り付けに必要な隙間がなく緩衝ゴム4を容易に設置することが出来ず破損時の取替えも出来ない。  In the mounting method as described above, when the concrete wall 3 or the steel bracket or the like and the cross beam 1 of the bridge are close to each other, there is no gap necessary for the mounting and the buffer rubber 4 cannot be easily installed. It cannot be replaced when damaged.

また、緩衝ゴム4の背面に接着剤を塗布し、コンクリート壁3に貼り付ける取り付け方法では、外部環境や作業員の接着技術・接着面の劣化などで接着力が大きく左右され低下、また、接着強度も測定できないため接着不良から緩衝ゴム4が剥がれ落ちる問題が発生している。  In addition, in the mounting method in which an adhesive is applied to the back surface of the buffer rubber 4 and adhered to the concrete wall 3, the adhesive strength is greatly affected and decreased by the external environment, the adhesion technique of the worker, and the deterioration of the adhesion surface. Since the strength cannot be measured, there is a problem that the buffer rubber 4 is peeled off due to poor adhesion.

本発明は、このような従来の取り付け方法が有している問題を解決しようとするためのものであり、狭いスペースでも緩衝ゴムを設置できるようにすることを目的としている。    The present invention is intended to solve the problems of such a conventional attachment method, and an object of the present invention is to make it possible to install a buffer rubber even in a narrow space.

そして、本発明は前記目的を達成するために、緩衝ゴム4をコンクリート壁3と主桁5の隙間に上面側から緩衝ゴム4を挿入して吊り下げ設置するように緩衝ゴム4に埋め込み金具を設けている。  In order to achieve the above-mentioned object, the present invention provides a buffer rubber 4 with a metal fitting embedded in the buffer rubber 4 so that the buffer rubber 4 is inserted into the gap between the concrete wall 3 and the main girder 5 from the upper surface side. Provided.

発明の8効果Eight effects of the invention

前述したように、本発明の緩衝ゴム4は、取り付けスペースが少ない場所でも、コンクリート壁3上部側から、緩衝ゴム4に取り付け金具8を連結して吊り下げ、設置することができる。  As described above, the shock absorbing rubber 4 of the present invention can be installed by suspending the mounting rubber 8 from the upper part of the concrete wall 3 by connecting the metal fitting 8 to the shock absorbing rubber 4 even in a place where the mounting space is small.

また、緩衝ゴム4を取り付けるコンクリート壁3や橋梁上部工の施工が完了したあとでも容易に施工を行うことができるため、従来のようにあらかじめ特定の位置に設置しておく必要はなく、施工後構造物の出来型誤差を確認して形状や取り付け位置が決定できる。  In addition, since the construction can be easily performed even after the construction of the concrete wall 3 to which the buffer rubber 4 is attached and the bridge superstructure is completed, it is not necessary to install in a specific position in advance as in the past. The shape and mounting position can be determined by checking the error of the finished mold of the structure.

緩衝ゴムの設置面には穴加工を設けないため、衝撃を受ける面の断面欠損がなく、緩衝ゴムの性能を正しく発揮させることができる。  Since the mounting surface of the buffer rubber is not provided with a hole, the cross section of the surface that receives the impact is not lost, and the performance of the buffer rubber can be exhibited correctly.

以下、図3、図4に基づいて説明をする。  Hereinafter, description will be given based on FIGS. 3 and 4.

緩衝ゴム4上面にドリルなどで穴を削孔後、ボルト7を樹脂系接着剤により埋め込み固定して緩衝ゴム4と一体化させる。ボルト7が埋め込み接着固定された緩衝ゴム4に吊り下げるための取り付け鋼板8を取り付け、ナット9で締め込み一体化する。  After drilling a hole on the upper surface of the buffer rubber 4 with a drill or the like, the bolt 7 is embedded and fixed with a resin adhesive and integrated with the buffer rubber 4. A mounting steel plate 8 is attached to the shock absorbing rubber 4 in which the bolt 7 is embedded and fixed and fixed.

図4のように取り付け鋼板8の折り曲げ位置12を変えることで、設置位置を自由に調整することができ、コンクリート壁3にアンカーボルト10などで固定して、計画する位置に緩衝ゴム4を設置することができる。  The installation position can be freely adjusted by changing the bending position 12 of the mounting steel plate 8 as shown in FIG. 4, and the buffer rubber 4 is installed at the planned position by being fixed to the concrete wall 3 with anchor bolts 10 or the like. can do.

緩衝ゴム4の設置形態を示す橋梁側面図Bridge side view showing the installation form of the shock absorber 4 従来の緩衝ゴム4取り付け方法の断面図Sectional view of conventional shock absorber 4 mounting method 本発明の緩衝ゴムの平面図Plan view of the cushion rubber of the present invention 本発明の緩衝ゴム4取り付け方法の断面図Sectional drawing of the buffer rubber 4 attachment method of this invention

Claims (2)

緩衝ゴムを吊り下げられるように緩衝ゴムに埋め込み金具を設けている事を特徴とする緩衝ゴム。    A shock-absorbing rubber characterized in that an embedding fitting is provided in the shock-absorbing rubber so that the shock-absorbing rubber can be suspended. 緩衝ゴムの上面にボルトを埋め込み緩衝ゴムと一体化させる。ボルトは緩衝ゴムを作成した後にドリルなどで穴を開け、樹脂系接着剤により固定する。ボルトを埋め込み接着した緩衝ゴムに、吊り下げるための取り付け鋼板をナットで締め込み一体化した事を特徴とする緩衝ゴム。  Bolts are embedded on the upper surface of the buffer rubber and integrated with the buffer rubber. Bolts are made with a drill after the buffer rubber is made, and fixed with a resin adhesive. A shock-absorbing rubber characterized in that a mounting steel plate for suspension is tightened and integrated with a shock-absorbing rubber in which bolts are embedded and bonded.
JP2011137814A 2011-06-06 2011-06-06 Buffer rubber for bridge fall prevention system Withdrawn JP2012251411A (en)

Priority Applications (1)

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JP2011137814A JP2012251411A (en) 2011-06-06 2011-06-06 Buffer rubber for bridge fall prevention system

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JP2011137814A JP2012251411A (en) 2011-06-06 2011-06-06 Buffer rubber for bridge fall prevention system

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106894330A (en) * 2017-02-10 2017-06-27 合肥学院 Pier rolling stone impact resisting device based on waste tires and construction method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106894330A (en) * 2017-02-10 2017-06-27 合肥学院 Pier rolling stone impact resisting device based on waste tires and construction method thereof
CN106894330B (en) * 2017-02-10 2018-07-24 合肥学院 Pier rolling stone impact resisting device based on waste tires and construction method thereof

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Effective date: 20140902