A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Prefabricated assembled pier with combined shear keys
The invention relates to the technical field of prefabricated assembly bridge piers, in particular to a prefabricated assembly bridge pier with combined shear keys, which comprises a prefabricated segment bridge pier, prestressed tendons, steel sleeve shear keys and steel pin bar shear keys, the prefabricated segment bridge pier is of a square structure, the prestressed tendons are arranged in the middle of the prefabricated segment bridge pier, and the steel sleeve shear keys are arranged in the middle of the prefabricated segment bridge pier. The outer layer of the prefabricated segment pier is wrapped with CFRP, the outer layer of the CFRP is connected with tubular steel sleeve shear keys, four shear key hole channels used for containing the steel pin shear keys are reserved in the edges of the four bottom edges in the prefabricated segment pier, and UHPC grouting materials are arranged on the outer layers of the steel pin shear keys. The problem that the shear resistance of the prefabricated assembled bridge pier is insufficient is solved, the problem that friction force between segments of an existing prefabricated assembled bridge pier is insufficient is solved, the problem that the shear torsion resistance of a common single shear key is insufficient is effectively solved, meanwhile, CFRP and UHPC materials are used, the mechanical property of the structure is improved, and the service life of the structure is prolonged.
本发明涉及预制拼装桥墩技术领域，尤其涉及一种具有组合式剪力键的预制拼装桥墩，包括预制节段桥墩、预应力筋、钢套筒剪力键和钢销棒剪力键，所述预制节段桥墩呈方形结构，所述预应力筋设置于所述预制节段桥墩的中部，其外层包裹有CFRP，所述CFRP外层连接有呈管状的钢套筒剪力键，所述预制节段桥墩的内部四条底边的边缘留有四个用于放置所述钢销棒剪力键的剪力键孔道，所述钢销棒剪力键的外层设有UHPC灌浆料。本发明提高了预制拼装桥墩抗剪能力不足问题，解决现有预制拼装桥墩节段间摩擦力不足的问题，有效改善了普通单一式剪力键的抗剪扭性能不足的问题，同时使用了CFRP和UHPC材料，提高了结构的力学性能和使用寿命。
Prefabricated assembled pier with combined shear keys
The invention relates to the technical field of prefabricated assembly bridge piers, in particular to a prefabricated assembly bridge pier with combined shear keys, which comprises a prefabricated segment bridge pier, prestressed tendons, steel sleeve shear keys and steel pin bar shear keys, the prefabricated segment bridge pier is of a square structure, the prestressed tendons are arranged in the middle of the prefabricated segment bridge pier, and the steel sleeve shear keys are arranged in the middle of the prefabricated segment bridge pier. The outer layer of the prefabricated segment pier is wrapped with CFRP, the outer layer of the CFRP is connected with tubular steel sleeve shear keys, four shear key hole channels used for containing the steel pin shear keys are reserved in the edges of the four bottom edges in the prefabricated segment pier, and UHPC grouting materials are arranged on the outer layers of the steel pin shear keys. The problem that the shear resistance of the prefabricated assembled bridge pier is insufficient is solved, the problem that friction force between segments of an existing prefabricated assembled bridge pier is insufficient is solved, the problem that the shear torsion resistance of a common single shear key is insufficient is effectively solved, meanwhile, CFRP and UHPC materials are used, the mechanical property of the structure is improved, and the service life of the structure is prolonged.
本发明涉及预制拼装桥墩技术领域，尤其涉及一种具有组合式剪力键的预制拼装桥墩，包括预制节段桥墩、预应力筋、钢套筒剪力键和钢销棒剪力键，所述预制节段桥墩呈方形结构，所述预应力筋设置于所述预制节段桥墩的中部，其外层包裹有CFRP，所述CFRP外层连接有呈管状的钢套筒剪力键，所述预制节段桥墩的内部四条底边的边缘留有四个用于放置所述钢销棒剪力键的剪力键孔道，所述钢销棒剪力键的外层设有UHPC灌浆料。本发明提高了预制拼装桥墩抗剪能力不足问题，解决现有预制拼装桥墩节段间摩擦力不足的问题，有效改善了普通单一式剪力键的抗剪扭性能不足的问题，同时使用了CFRP和UHPC材料，提高了结构的力学性能和使用寿命。
Prefabricated assembled pier with combined shear keys
一种具有组合式剪力键的预制拼装桥墩
CHEN BAOKUI (author) / PENG XIN (author)
2022-04-15
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Prefabricated assembled pier and forming method of prefabricated assembled pier
| European Patent Office | 2020