Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Pre-pressing limiting seismic mitigation and absorption method and device for bridge
The invention relates to a pre-pressing limiting seismic mitigation and absorption method and device for a bridge, and belongs to the technical field of bridge seismic mitigation. The pre-pressing limiting seismic mitigation and absorption method comprises the following steps that a pre-pressing spring is arranged between a pier and a main beam, the main beam acts on the pier in the compression direction of the pre-pressing spring through the pre-pressing spring, and the pre-pressing force of the pre-pressing spring is larger than or equal to 1.5 times of the friction force between the pier and the main beam. The pre-pressing limiting shock absorption and isolation device comprises a pre-pressing limiting unit, the pre-pressing limiting unit comprises a pre-pressing spring and a pre-pressing box used for compressing the pre-pressing spring, and a connecting rod is arranged between the pre-pressing spring and the main beam. When an earthquake is weak, the main beam and the bridge pier can be limited, the structural rigidity between the main beam and the bridge pier is kept, and a bridge structure is in a normal use state; when the earthquake intensity is large, the horizontal rigidity between the main beam and the bridge pier can be reduced, the earthquake response of the bridge is reduced, the position between the main beam and the bridge pier is automatically reset after the earthquake is finished, and normal use of the bridge is guaranteed.
本发明涉及一种桥梁的预压限位减隔震方法及装置，属于桥梁减震技术领域。预压限位减隔震方法，包括如下步骤：在桥墩与主梁之间设置预压弹簧，主梁通过预压弹簧沿预压弹簧的压缩方向作用在桥墩上，预压弹簧的预压力大于或等于桥墩与主梁之间摩擦力的1.5倍。预压限位减隔震装置，包括预压限位单元，预压限位单元包括预压弹簧及用于压缩预压弹簧的预压盒，预压弹簧与主梁之间设置有连接杆。本发明能够在地震较弱时，对主梁与桥墩进行限位，保持主梁与桥墩之间的结构刚度，使桥梁结构处于正常使用状态；在地震强度较大时，能够降低主梁与桥墩之间的水平刚度，减小桥梁的地震响应，地震结束后，使主梁与桥墩之间位置自动复位，保证桥梁的正常使用。
Pre-pressing limiting seismic mitigation and absorption method and device for bridge
The invention relates to a pre-pressing limiting seismic mitigation and absorption method and device for a bridge, and belongs to the technical field of bridge seismic mitigation. The pre-pressing limiting seismic mitigation and absorption method comprises the following steps that a pre-pressing spring is arranged between a pier and a main beam, the main beam acts on the pier in the compression direction of the pre-pressing spring through the pre-pressing spring, and the pre-pressing force of the pre-pressing spring is larger than or equal to 1.5 times of the friction force between the pier and the main beam. The pre-pressing limiting shock absorption and isolation device comprises a pre-pressing limiting unit, the pre-pressing limiting unit comprises a pre-pressing spring and a pre-pressing box used for compressing the pre-pressing spring, and a connecting rod is arranged between the pre-pressing spring and the main beam. When an earthquake is weak, the main beam and the bridge pier can be limited, the structural rigidity between the main beam and the bridge pier is kept, and a bridge structure is in a normal use state; when the earthquake intensity is large, the horizontal rigidity between the main beam and the bridge pier can be reduced, the earthquake response of the bridge is reduced, the position between the main beam and the bridge pier is automatically reset after the earthquake is finished, and normal use of the bridge is guaranteed.
本发明涉及一种桥梁的预压限位减隔震方法及装置，属于桥梁减震技术领域。预压限位减隔震方法，包括如下步骤：在桥墩与主梁之间设置预压弹簧，主梁通过预压弹簧沿预压弹簧的压缩方向作用在桥墩上，预压弹簧的预压力大于或等于桥墩与主梁之间摩擦力的1.5倍。预压限位减隔震装置，包括预压限位单元，预压限位单元包括预压弹簧及用于压缩预压弹簧的预压盒，预压弹簧与主梁之间设置有连接杆。本发明能够在地震较弱时，对主梁与桥墩进行限位，保持主梁与桥墩之间的结构刚度，使桥梁结构处于正常使用状态；在地震强度较大时，能够降低主梁与桥墩之间的水平刚度，减小桥梁的地震响应，地震结束后，使主梁与桥墩之间位置自动复位，保证桥梁的正常使用。
Pre-pressing limiting seismic mitigation and absorption method and device for bridge
桥梁的预压限位减隔震方法及装置
ZHENG WANSHAN (Autor:in) / TANG GUANGWU (Autor:in) / LIU HUAILIN (Autor:in) / GAO WENJUN (Autor:in) / XIE HAOYU (Autor:in)
07.08.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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