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A platform for research: civil engineering, architecture and urbanism
High-speed rail simply supported girder bridge tough anti-seismic system and construction method thereof
The invention discloses a high-speed rail simply supported girder bridge tough anti-seismic system and a construction method thereof, and belongs to the technical field of bridge engineering.The anti-seismic system comprises an outer pier, a swing column, a buckling constraint corrugated pipe energy dissipation support, a main beam and an energy dissipation support, the swing column is connected with a bearing platform through an unbonded prestressed tendon and a friction damper, and the upper end of the swing column is connected with the main beam through a check block; the swing column is connected with the outer pier through the buckling restrained corrugated pipe energy dissipation support, and the outer pier is connected with the main beam through a plurality of energy dissipation supports and anchor bolts which are arranged at intervals. The swinging columns are arranged in the outer piers below the main beams, the buckling restrained corrugated pipe energy dissipation supports and the friction dampers are installed in the space between the outer piers and the swinging columns, the unbonded prestressed tendons provide self-resetting, and the requirement that the bridge keeps elastic under small earthquakes is met; the energy dissipation supports, the replaceable buckling constraint corrugated pipe energy dissipation supports and the friction dampers are used for dissipating energy under medium earthquakes and large earthquakes. By adopting the method, the maintenance time and the maintenance cost of the bridge are greatly reduced, and the rapid recovery of the post-earthquake structure is realized.
本发明公开了一种高铁简支梁桥韧性抗震体系及其施工方法，属于桥梁工程技术领域，抗震体系包括外墩、摇摆柱、屈曲约束波纹管耗能支撑、主梁和耗能支座，摇摆柱通过无粘结预应力筋及摩擦阻尼器与承台相连、上端通过挡块与主梁相连，摇摆柱与外墩通过屈曲约束波纹管耗能支撑相连，外墩与主梁通过多个间隔布置的耗能支座和锚栓连接。通过在主梁下方外墩内设置摇摆柱，利用外墩与摇摆柱之间的空间安装屈曲约束波纹管耗能支撑和摩擦阻尼器，无粘结预应力筋提供自复位，满足小震下桥梁保持弹性，中震及大震下利用耗能支座及可更换的屈曲约束波纹管耗能支撑和摩擦阻尼器来耗能。采用本发明大幅降低了桥梁维修时间和维修成本，实现了震后结构快速恢复。
High-speed rail simply supported girder bridge tough anti-seismic system and construction method thereof
The invention discloses a high-speed rail simply supported girder bridge tough anti-seismic system and a construction method thereof, and belongs to the technical field of bridge engineering.The anti-seismic system comprises an outer pier, a swing column, a buckling constraint corrugated pipe energy dissipation support, a main beam and an energy dissipation support, the swing column is connected with a bearing platform through an unbonded prestressed tendon and a friction damper, and the upper end of the swing column is connected with the main beam through a check block; the swing column is connected with the outer pier through the buckling restrained corrugated pipe energy dissipation support, and the outer pier is connected with the main beam through a plurality of energy dissipation supports and anchor bolts which are arranged at intervals. The swinging columns are arranged in the outer piers below the main beams, the buckling restrained corrugated pipe energy dissipation supports and the friction dampers are installed in the space between the outer piers and the swinging columns, the unbonded prestressed tendons provide self-resetting, and the requirement that the bridge keeps elastic under small earthquakes is met; the energy dissipation supports, the replaceable buckling constraint corrugated pipe energy dissipation supports and the friction dampers are used for dissipating energy under medium earthquakes and large earthquakes. By adopting the method, the maintenance time and the maintenance cost of the bridge are greatly reduced, and the rapid recovery of the post-earthquake structure is realized.
本发明公开了一种高铁简支梁桥韧性抗震体系及其施工方法，属于桥梁工程技术领域，抗震体系包括外墩、摇摆柱、屈曲约束波纹管耗能支撑、主梁和耗能支座，摇摆柱通过无粘结预应力筋及摩擦阻尼器与承台相连、上端通过挡块与主梁相连，摇摆柱与外墩通过屈曲约束波纹管耗能支撑相连，外墩与主梁通过多个间隔布置的耗能支座和锚栓连接。通过在主梁下方外墩内设置摇摆柱，利用外墩与摇摆柱之间的空间安装屈曲约束波纹管耗能支撑和摩擦阻尼器，无粘结预应力筋提供自复位，满足小震下桥梁保持弹性，中震及大震下利用耗能支座及可更换的屈曲约束波纹管耗能支撑和摩擦阻尼器来耗能。采用本发明大幅降低了桥梁维修时间和维修成本，实现了震后结构快速恢复。
High-speed rail simply supported girder bridge tough anti-seismic system and construction method thereof
高铁简支梁桥韧性抗震体系及其施工方法
WANG JUNWEN (author) / QI LONGZHI (author) / SHI SHUYUAN (author) / LIU LIJIE (author) / HAO YUJUN (author) / TIAN MAODONG (author) / ZHANG XUEMING (author) / LI YONG (author)
2024-02-20
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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