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A platform for research: civil engineering, architecture and urbanism
UHPC-corrugated steel web prefabricated and assembled variable cross-section box girder structure and construction method
The invention relates to a UHPC-corrugated steel web prefabricated and assembled variable cross-section box girder structure and a construction method, and belongs to the technical field of bridge construction. Wherein each prefabricated box girder section comprises a UHPC top plate, a UHPC bottom plate, a UHPC diaphragm plate, a corrugated steel web, a shear connector and a cross brace, FRP prestressed steel beams are arranged on the top plate and the bottom plate, the top plate and the bottom plate are in staggered lap joint through reserved U-shaped steel bars and welded with transverse steel bars, a wet joint steel bar framework is formed, UHPC is poured, prestress is tensioned after the joint strength reaches a design value, and prefabricated section suspended splicing construction is achieved. The structure is simple, installation is convenient and fast, the overall dead weight of the segments is small, the joint strength is high, durability is good, connection is reliable, damage to the main beam caused by joint failure is effectively avoided, the cast-in-place project amount is reduced, and the construction period is shortened.
本发明涉及一种UHPC‑波形钢腹板预制拼装变截面箱梁构造及施工方法，属于桥梁施工技术领域。其中预制箱梁节段包括UHPC顶板、UHPC底板、UHPC横隔板、波形钢腹板、剪力连接件和横撑，顶、底板均布置FRP预应力钢束，顶、底板通过预留U形钢筋交错搭接并焊接横向钢筋，形成湿接缝钢筋骨架，浇筑UHPC，待接缝强度达到设计值后张拉预应力，实现预制节段悬拼施工。本发明构造简单，安装方便快捷，节段整体自重小，接缝强度高且耐久性好，连接可靠，有效避免因接缝失效导致的主梁破坏，减少现场浇筑工程量，缩短施工周期。
UHPC-corrugated steel web prefabricated and assembled variable cross-section box girder structure and construction method
The invention relates to a UHPC-corrugated steel web prefabricated and assembled variable cross-section box girder structure and a construction method, and belongs to the technical field of bridge construction. Wherein each prefabricated box girder section comprises a UHPC top plate, a UHPC bottom plate, a UHPC diaphragm plate, a corrugated steel web, a shear connector and a cross brace, FRP prestressed steel beams are arranged on the top plate and the bottom plate, the top plate and the bottom plate are in staggered lap joint through reserved U-shaped steel bars and welded with transverse steel bars, a wet joint steel bar framework is formed, UHPC is poured, prestress is tensioned after the joint strength reaches a design value, and prefabricated section suspended splicing construction is achieved. The structure is simple, installation is convenient and fast, the overall dead weight of the segments is small, the joint strength is high, durability is good, connection is reliable, damage to the main beam caused by joint failure is effectively avoided, the cast-in-place project amount is reduced, and the construction period is shortened.
本发明涉及一种UHPC‑波形钢腹板预制拼装变截面箱梁构造及施工方法，属于桥梁施工技术领域。其中预制箱梁节段包括UHPC顶板、UHPC底板、UHPC横隔板、波形钢腹板、剪力连接件和横撑，顶、底板均布置FRP预应力钢束，顶、底板通过预留U形钢筋交错搭接并焊接横向钢筋，形成湿接缝钢筋骨架，浇筑UHPC，待接缝强度达到设计值后张拉预应力，实现预制节段悬拼施工。本发明构造简单，安装方便快捷，节段整体自重小，接缝强度高且耐久性好，连接可靠，有效避免因接缝失效导致的主梁破坏，减少现场浇筑工程量，缩短施工周期。
UHPC-corrugated steel web prefabricated and assembled variable cross-section box girder structure and construction method
一种UHPC-波形钢腹板预制拼装变截面箱梁构造及施工方法
CHEN DAIKUN (author) / MA YAZHONG (author) / XUE WEI (author) / HE FUJUN (author) / ZHANG YINGCAI (author) / WU YANJUN (author) / MIN ZHENHUAN (author) / LONG PEIHENG (author) / ZHANG GUANGDA (author) / JIANG YU (author)
2023-11-24
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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