A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
EMBEDDED JOINT FOR BRIDGE AND EMBEDDED JOINT STRUCTURE
PROBLEM TO BE SOLVED: To allow expansion and contraction to occur evenly in an embedded range and to greatly ease the reflection to a pavement part from a floor slab expansion gap part in an embedded joint for a bridge.SOLUTION: An asphalt layer 11, 12, ... capable of expanding and contracting in a bridge axial direction is constructed between opposing floor slabs 1 so as to cover a floor slab expansion gap part 2 of an edge part of a bridge floor slab 1. A steel plate panel layer 21, 22, ... stuck to the asphalt layer 11, 12, ... are laminated in a prescribed number of layers. The steel plate panel layer 21, 22, ..., comprises slits 21S, 22S, ... consisting of a width in which an expansion gap amount S reduces, and the number of slits increases, in accordance to a layer position extending to a top layer, based on the expansion gap amount S of the floor slab expansion gap part 2. The slit 21S, 22S, ..., are set on each layer at a prescribed interval in the bridge axial direction so as to extend in a width direction that crosses the bridge axial direction. When the floor slab expansion gap part 2 is displaced in the contracting direction, the asphalt layer 11, 12, ... deforms in line with the displacement of floor slab 1. A part of the deformed asphalt is extruded into the space formed by the slit 21S, 22S, ..., and the contraction of the floor slap expansion gap part 2 is followed by the entire joint.SELECTED DRAWING: Figure 1
【課題】 橋梁用埋設ジョイントにおいて、埋設された範囲内で均等に伸縮し、床版遊間部からの舗装部へのリフレクションを大幅に緩和する。【解決手段】 橋梁の床版１の端部の床版遊間部２を覆うように対向する床版１間に架設され、橋軸方向に伸縮可能なアスファルト層１１，１２，…と、アスファルト層１１，１２，…に密着させた鋼板パネル層２１，２２，…とを所定層数積層してなる。鋼板パネル層２１，２２，…は、床版遊間部２の遊間量Ｓを基準として、遊間量Ｓを上層に至る層位置に応じて低減した幅と、増加させた数とからなるスリット２１Ｓ，２２Ｓ，…を有する。スリット２１Ｓ，２２Ｓ，…は橋軸方向を横切る幅員方向に延在するように橋軸方向に所定間隔で各層に配設される。床版遊間部２が短縮方向に変位した際、アスファルト層１１，１２，…が床版１の変位に追従して変形し、変形したアスファルトの一部がスリット２１Ｓ，２２Ｓ，…が形成する空間内にはみ出してジョイント全体で床版遊間部２の短縮に追従する。【選択図】図１
EMBEDDED JOINT FOR BRIDGE AND EMBEDDED JOINT STRUCTURE
PROBLEM TO BE SOLVED: To allow expansion and contraction to occur evenly in an embedded range and to greatly ease the reflection to a pavement part from a floor slab expansion gap part in an embedded joint for a bridge.SOLUTION: An asphalt layer 11, 12, ... capable of expanding and contracting in a bridge axial direction is constructed between opposing floor slabs 1 so as to cover a floor slab expansion gap part 2 of an edge part of a bridge floor slab 1. A steel plate panel layer 21, 22, ... stuck to the asphalt layer 11, 12, ... are laminated in a prescribed number of layers. The steel plate panel layer 21, 22, ..., comprises slits 21S, 22S, ... consisting of a width in which an expansion gap amount S reduces, and the number of slits increases, in accordance to a layer position extending to a top layer, based on the expansion gap amount S of the floor slab expansion gap part 2. The slit 21S, 22S, ..., are set on each layer at a prescribed interval in the bridge axial direction so as to extend in a width direction that crosses the bridge axial direction. When the floor slab expansion gap part 2 is displaced in the contracting direction, the asphalt layer 11, 12, ... deforms in line with the displacement of floor slab 1. A part of the deformed asphalt is extruded into the space formed by the slit 21S, 22S, ..., and the contraction of the floor slap expansion gap part 2 is followed by the entire joint.SELECTED DRAWING: Figure 1
【課題】 橋梁用埋設ジョイントにおいて、埋設された範囲内で均等に伸縮し、床版遊間部からの舗装部へのリフレクションを大幅に緩和する。【解決手段】 橋梁の床版１の端部の床版遊間部２を覆うように対向する床版１間に架設され、橋軸方向に伸縮可能なアスファルト層１１，１２，…と、アスファルト層１１，１２，…に密着させた鋼板パネル層２１，２２，…とを所定層数積層してなる。鋼板パネル層２１，２２，…は、床版遊間部２の遊間量Ｓを基準として、遊間量Ｓを上層に至る層位置に応じて低減した幅と、増加させた数とからなるスリット２１Ｓ，２２Ｓ，…を有する。スリット２１Ｓ，２２Ｓ，…は橋軸方向を横切る幅員方向に延在するように橋軸方向に所定間隔で各層に配設される。床版遊間部２が短縮方向に変位した際、アスファルト層１１，１２，…が床版１の変位に追従して変形し、変形したアスファルトの一部がスリット２１Ｓ，２２Ｓ，…が形成する空間内にはみ出してジョイント全体で床版遊間部２の短縮に追従する。【選択図】図１
EMBEDDED JOINT FOR BRIDGE AND EMBEDDED JOINT STRUCTURE
橋梁用埋設ジョイント及び埋設ジョイント構造
MINAMOTO ATSUSHI (author)
2018-06-21
Patent
Electronic Resource
Japanese
EMBEDDED JOINT STRUCTURE FOR ROAD BRIDGE AND CONSTRUCTION METHOD FOR THE EMBEDDED JOINT STRUCTURE
| European Patent Office | 2016
Bridge pre-embedded protection expansion joint structure and construction method
| European Patent Office | 2021
| European Patent Office | 2022