A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Self-resetting energy consumption segment pier and connecting method
The invention discloses a self-resetting energy consumption segment pier and a connecting method. Belongs to the field of prestressed prefabricated pier connection and comprises a second-section pier, a first-section pier and a bearing platform, a perforated steel hoop is arranged between the second-section pier and the first-section pier, and a tenon of the first-section pier is inserted into a tenon groove of the bearing platform; the first section of bridge pier is connected with the bearing platform through the energy dissipation steel bars, and prestressed tendons are arranged in prestressed tendon hole channels formed in the second section of bridge pier, the first section of bridge pier and the bearing platform; according to the technology, the shear capacity of the bottom of the pier can be improved; the concept of damage control is adopted, connection damage does not need to be completely avoided, the pier is allowed to dissipate earthquake energy through swing opening and closing during an earthquake through the springback effect of the unbonded prestressed tendons, meanwhile, the energy dissipation capacity of the structure is improved through yielding of the energy dissipation steel bars and the perforated steel hoops, and damage to a pier body is reduced; the function of the post-earthquake bridge pier is rapidly repaired by replacing the energy dissipation steel bars, the peeled mortar and the perforated steel hoops, so that traffic is recovered as soon as possible.
本发明公开了一种自复位耗能节段桥墩及连接方法；属于预应力预制桥墩连接领域，包括第二节、第一节段桥墩及承台，在第二节、第一节段桥墩间安置开孔钢套箍，所述第一节段桥墩的榫头插设在承台的榫头凹槽中；第一节段桥墩与承台通过耗能钢棒相连接，在第二节、第一节段桥墩及承台开设的预应力筋孔道中设有预应力筋；本发明的技术可增加桥墩底部的抗剪能力；采用控制损伤的理念，无需完全避免连接损坏，通过无粘结预应力筋的回弹作用，允许桥墩在地震时通过摆动开合来耗散地震能量，同时通过耗能钢棒和开孔钢套箍的屈服来提高结构的耗能能力，降低墩身破坏；通过更换耗能钢棒、剥落的砂浆及开孔钢套箍来实现震后桥墩功能快速修复，以尽快恢复交通。
Self-resetting energy consumption segment pier and connecting method
The invention discloses a self-resetting energy consumption segment pier and a connecting method. Belongs to the field of prestressed prefabricated pier connection and comprises a second-section pier, a first-section pier and a bearing platform, a perforated steel hoop is arranged between the second-section pier and the first-section pier, and a tenon of the first-section pier is inserted into a tenon groove of the bearing platform; the first section of bridge pier is connected with the bearing platform through the energy dissipation steel bars, and prestressed tendons are arranged in prestressed tendon hole channels formed in the second section of bridge pier, the first section of bridge pier and the bearing platform; according to the technology, the shear capacity of the bottom of the pier can be improved; the concept of damage control is adopted, connection damage does not need to be completely avoided, the pier is allowed to dissipate earthquake energy through swing opening and closing during an earthquake through the springback effect of the unbonded prestressed tendons, meanwhile, the energy dissipation capacity of the structure is improved through yielding of the energy dissipation steel bars and the perforated steel hoops, and damage to a pier body is reduced; the function of the post-earthquake bridge pier is rapidly repaired by replacing the energy dissipation steel bars, the peeled mortar and the perforated steel hoops, so that traffic is recovered as soon as possible.
本发明公开了一种自复位耗能节段桥墩及连接方法；属于预应力预制桥墩连接领域，包括第二节、第一节段桥墩及承台，在第二节、第一节段桥墩间安置开孔钢套箍，所述第一节段桥墩的榫头插设在承台的榫头凹槽中；第一节段桥墩与承台通过耗能钢棒相连接，在第二节、第一节段桥墩及承台开设的预应力筋孔道中设有预应力筋；本发明的技术可增加桥墩底部的抗剪能力；采用控制损伤的理念，无需完全避免连接损坏，通过无粘结预应力筋的回弹作用，允许桥墩在地震时通过摆动开合来耗散地震能量，同时通过耗能钢棒和开孔钢套箍的屈服来提高结构的耗能能力，降低墩身破坏；通过更换耗能钢棒、剥落的砂浆及开孔钢套箍来实现震后桥墩功能快速修复，以尽快恢复交通。
Self-resetting energy consumption segment pier and connecting method
一种自复位耗能节段桥墩及连接方法
ZHANG JUNXUE (author) / XU DAN (author)
2023-11-07
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Self-resetting energy dissipation connecting structure of swinging pier-tie beam
| European Patent Office | 2020
| European Patent Office | 2023
| European Patent Office | 2023
Railway self-resetting pier with external SMA energy consumption device
| European Patent Office | 2023