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Prefabricated concrete beam bridge transverse connecting system and construction method
A small box girder bridge body is formed by combining a plurality of small box girders, connecting steel plates are arranged on the outer sides of the small box girders, trusses are arranged at the 1/4 span position, the 1/2 span position and the 3/4 span position of the small box girder bridge body, the trusses are connected with the connecting steel plates, and the trusses are connected through prestressed CFRP cables; the sizes of all the components can be measured in advance and prefabricated in advance, and the components are transported from a factory to a site to be assembled and connected, so that the site construction time can be shortened, and the component quality is improved. The defects of long construction time, difficulty in guaranteeing quality and the like of a traditional transverse connecting component are overcome; the horizontal trusses are located at the bottoms of the small box girders, so that component stress is more reasonable. The arrangement of the external prestress CFRP cables provides upward force for the horizontal trusses and the inclined trusses, the stress at the connecting positions under the action of external loads is reduced, and the connecting efficiency and the integrity of the bridge are improved.
本发明公开了一种预制装配式混凝土梁桥横向连接体系及施工方法，小箱梁桥本体由多个小箱梁组合而成，小箱梁的外侧设有连接钢板，小箱梁桥本体的1/4跨、1/2跨及3/4跨处均设有桁架，桁架与连接钢板连接，桁架之间通过预应力CFRP索连接；所有构件的尺寸均可提前测量，并提前预制生产，从工厂运输到现场进行装配连接，可缩短现场施工时间，提高构件质量。避免了传统横向连接构件施工时间长，质量难以保证等缺点；水平桁架位于小箱梁梁底，使构件受力更加合理。体外预应力CFRP索的设置为水平桁架和斜桁架提供一个向上力，减轻了外荷载作用下连接处的受力大小，提高了连接效率和桥梁的整体性。
Prefabricated concrete beam bridge transverse connecting system and construction method
A small box girder bridge body is formed by combining a plurality of small box girders, connecting steel plates are arranged on the outer sides of the small box girders, trusses are arranged at the 1/4 span position, the 1/2 span position and the 3/4 span position of the small box girder bridge body, the trusses are connected with the connecting steel plates, and the trusses are connected through prestressed CFRP cables; the sizes of all the components can be measured in advance and prefabricated in advance, and the components are transported from a factory to a site to be assembled and connected, so that the site construction time can be shortened, and the component quality is improved. The defects of long construction time, difficulty in guaranteeing quality and the like of a traditional transverse connecting component are overcome; the horizontal trusses are located at the bottoms of the small box girders, so that component stress is more reasonable. The arrangement of the external prestress CFRP cables provides upward force for the horizontal trusses and the inclined trusses, the stress at the connecting positions under the action of external loads is reduced, and the connecting efficiency and the integrity of the bridge are improved.
本发明公开了一种预制装配式混凝土梁桥横向连接体系及施工方法，小箱梁桥本体由多个小箱梁组合而成，小箱梁的外侧设有连接钢板，小箱梁桥本体的1/4跨、1/2跨及3/4跨处均设有桁架，桁架与连接钢板连接，桁架之间通过预应力CFRP索连接；所有构件的尺寸均可提前测量，并提前预制生产，从工厂运输到现场进行装配连接，可缩短现场施工时间，提高构件质量。避免了传统横向连接构件施工时间长，质量难以保证等缺点；水平桁架位于小箱梁梁底，使构件受力更加合理。体外预应力CFRP索的设置为水平桁架和斜桁架提供一个向上力，减轻了外荷载作用下连接处的受力大小，提高了连接效率和桥梁的整体性。
Prefabricated concrete beam bridge transverse connecting system and construction method
一种预制装配式混凝土梁桥横向连接体系及施工方法
CHEN CHEN (author) / SUN ZHIGUO (author)
2024-09-06
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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