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Connecting structure of UHPC prefabricated hollow pier and bearing platform
The invention belongs to the technical field of bridge pier structures, and discloses a connecting structure of a UHPC prefabricated hollow bridge pier and a bearing platform, the connecting structure comprises the prefabricated hollow bridge pier and the bearing platform, the prefabricated hollow bridge pier is a prefabricated hollow bridge pier, a plastic hinge area at the bottom of the prefabricated hollow bridge pier is an inner diameter reduction section, and an inverted annular platform notch is formed in the outer side of the bottom of the inner diameter reduction section; an inverted-trapezoid-shaped groove used for containing the prefabricated hollow pier is formed in the middle of the top of the bearing platform, the inner diameter of the bottom of the inverted-trapezoid-shaped groove is larger than the outer diameter of the prefabricated hollow pier, and a plurality of pier-bearing platform connecting ribs are evenly distributed in the inverted-trapezoid-shaped groove in the annular direction. The bridge pier-bearing platform connecting ribs are located in the inverted annular platform notches, the bridge pier-bearing platform connecting ribs and the bridge pier connecting ribs are alternately arranged in the annular direction, and ultra-high performance concrete is poured between the prefabricated hollow bridge pier and the gap of the inverted trapezoidal groove; by means of the structure, the overall connection strength between the prefabricated hollow pier and the bearing platform is greatly enhanced, the shock resistance of the pier can be improved, and meanwhile the plastic hinge can be prevented from being damaged too early.
本发明属于桥墩结构技术领域，公开了一种UHPC预制空心桥墩和承台的连接结构，包括预制空心桥墩和承台，所述预制空心桥墩为预制空心桥墩，预制空心桥墩底部塑性铰区域为内径缩减段，在内径缩减段的底部外侧设有倒环形台缺口；在承台顶部中间设有用于放置预制空心桥墩的倒梯形凹槽，倒梯形凹槽的底部内径大于预制空心桥墩的外径，在倒梯形凹槽内环向均布有多根桥墩‑承台连接筋，所述桥墩‑承台连接筋位于倒环形台缺口内且与桥墩连接筋环向交替布置，在预制空心桥墩与倒梯形凹槽空隙之间浇筑有超高性能混凝土；通过该结构大大增强了预制空心桥墩和承台之间的整体连接强度，还有利于桥墩抗震能力的提升，同时可以避免塑性铰过早破坏。
Connecting structure of UHPC prefabricated hollow pier and bearing platform
The invention belongs to the technical field of bridge pier structures, and discloses a connecting structure of a UHPC prefabricated hollow bridge pier and a bearing platform, the connecting structure comprises the prefabricated hollow bridge pier and the bearing platform, the prefabricated hollow bridge pier is a prefabricated hollow bridge pier, a plastic hinge area at the bottom of the prefabricated hollow bridge pier is an inner diameter reduction section, and an inverted annular platform notch is formed in the outer side of the bottom of the inner diameter reduction section; an inverted-trapezoid-shaped groove used for containing the prefabricated hollow pier is formed in the middle of the top of the bearing platform, the inner diameter of the bottom of the inverted-trapezoid-shaped groove is larger than the outer diameter of the prefabricated hollow pier, and a plurality of pier-bearing platform connecting ribs are evenly distributed in the inverted-trapezoid-shaped groove in the annular direction. The bridge pier-bearing platform connecting ribs are located in the inverted annular platform notches, the bridge pier-bearing platform connecting ribs and the bridge pier connecting ribs are alternately arranged in the annular direction, and ultra-high performance concrete is poured between the prefabricated hollow bridge pier and the gap of the inverted trapezoidal groove; by means of the structure, the overall connection strength between the prefabricated hollow pier and the bearing platform is greatly enhanced, the shock resistance of the pier can be improved, and meanwhile the plastic hinge can be prevented from being damaged too early.
本发明属于桥墩结构技术领域，公开了一种UHPC预制空心桥墩和承台的连接结构，包括预制空心桥墩和承台，所述预制空心桥墩为预制空心桥墩，预制空心桥墩底部塑性铰区域为内径缩减段，在内径缩减段的底部外侧设有倒环形台缺口；在承台顶部中间设有用于放置预制空心桥墩的倒梯形凹槽，倒梯形凹槽的底部内径大于预制空心桥墩的外径，在倒梯形凹槽内环向均布有多根桥墩‑承台连接筋，所述桥墩‑承台连接筋位于倒环形台缺口内且与桥墩连接筋环向交替布置，在预制空心桥墩与倒梯形凹槽空隙之间浇筑有超高性能混凝土；通过该结构大大增强了预制空心桥墩和承台之间的整体连接强度，还有利于桥墩抗震能力的提升，同时可以避免塑性铰过早破坏。
Connecting structure of UHPC prefabricated hollow pier and bearing platform
一种UHPC预制空心桥墩和承台的连接结构
LIANG YAN (author) / ZHANG CHAOYANG (author)
2023-12-05
Patent
Electronic Resource
Chinese
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