Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-resetting bridge pier with sacrifice component
The invention discloses a self-resetting bridge pier with a sacrifice part, which relates to the technical field of bridge structure seismic reduction and isolation, and is structurally characterized in that the self-resetting bridge pier and an abutment are separated, a pier body is connected with a bearing platform through the sacrifice part, the sacrifice part is a screw rod subjected to special grooving treatment, one end of the screw rod is anchored at the top of an expanded foundation, and the other end of the screw rod is anchored at the bottom of the bearing platform. The sacrifice part can supplement and provide tensile bearing capacity for the pier so as to ensure that the self-resetting pier has large lateral rigidity and make up the defect that the self-resetting pier is prone to overturning, and the special structure facilitates destructive force design of the self-resetting pier and facilitates control over initial lift-off swing of the pier. Before an earthquake, the bridge pier balances horizontal loads (wind, train braking force and earthquake action) through vertical loads (self weight of the bridge pier and pulling force of sacrificial parts) so as to meet normal driving requirements, in a strong earthquake, the bridge pier fully utilizes damage of the sacrificial parts and lift-off swing to dissipate energy and insulate earthquake, self-resetting is achieved through self weight after the earthquake, and the bridge pier and a bearing platform are prevented from being damaged to the maximum extent. The sacrifice parts have good replaceability, the pier can be restored to the original function level by replacing the sacrifice parts after an earthquake, the maintenance cost is effectively reduced, meanwhile, an anti-seismic defense line is additionally arranged for the pier, and it is guaranteed that the anti-seismic safety of the pier is improved.
本发明公开了一种带牺牲部件自复位桥墩，涉及桥梁结构减、隔震技术领域，其结构特征是自复位桥墩墩台分离设计，通过牺牲部件将墩身与承台相连接，牺牲部件为特殊开槽处理的螺杆，螺杆一端锚固于扩大基础顶部，另一端锚固于承台底。牺牲部件可为桥墩补充提供抗拉承载力，以保证自复位桥墩有较大的侧向刚度，弥补其容易倾覆的不足，且特殊的构造便于其破坏力设计，有助于控制桥墩的初始提离摇摆。震前桥墩通过竖向荷载(桥墩自重，牺牲部件拉力)平衡水平荷载(风、列车制动力及地震作用)以满足正常行车要求，强震中桥墩充分利用牺牲部件破坏与提离摇摆耗能隔震，震后靠自重实现自复位，最大程度地避免桥墩与承台受到损伤。且牺牲部件具有良好的可更换性，震后可通过更换牺牲部件使桥墩恢复到原有的功能水平，有效降低维护成本，同时，也为桥墩增设了一道抗震防线，保障提高桥墩的抗震安全性。
Self-resetting bridge pier with sacrifice component
The invention discloses a self-resetting bridge pier with a sacrifice part, which relates to the technical field of bridge structure seismic reduction and isolation, and is structurally characterized in that the self-resetting bridge pier and an abutment are separated, a pier body is connected with a bearing platform through the sacrifice part, the sacrifice part is a screw rod subjected to special grooving treatment, one end of the screw rod is anchored at the top of an expanded foundation, and the other end of the screw rod is anchored at the bottom of the bearing platform. The sacrifice part can supplement and provide tensile bearing capacity for the pier so as to ensure that the self-resetting pier has large lateral rigidity and make up the defect that the self-resetting pier is prone to overturning, and the special structure facilitates destructive force design of the self-resetting pier and facilitates control over initial lift-off swing of the pier. Before an earthquake, the bridge pier balances horizontal loads (wind, train braking force and earthquake action) through vertical loads (self weight of the bridge pier and pulling force of sacrificial parts) so as to meet normal driving requirements, in a strong earthquake, the bridge pier fully utilizes damage of the sacrificial parts and lift-off swing to dissipate energy and insulate earthquake, self-resetting is achieved through self weight after the earthquake, and the bridge pier and a bearing platform are prevented from being damaged to the maximum extent. The sacrifice parts have good replaceability, the pier can be restored to the original function level by replacing the sacrifice parts after an earthquake, the maintenance cost is effectively reduced, meanwhile, an anti-seismic defense line is additionally arranged for the pier, and it is guaranteed that the anti-seismic safety of the pier is improved.
本发明公开了一种带牺牲部件自复位桥墩，涉及桥梁结构减、隔震技术领域，其结构特征是自复位桥墩墩台分离设计，通过牺牲部件将墩身与承台相连接，牺牲部件为特殊开槽处理的螺杆，螺杆一端锚固于扩大基础顶部，另一端锚固于承台底。牺牲部件可为桥墩补充提供抗拉承载力，以保证自复位桥墩有较大的侧向刚度，弥补其容易倾覆的不足，且特殊的构造便于其破坏力设计，有助于控制桥墩的初始提离摇摆。震前桥墩通过竖向荷载(桥墩自重，牺牲部件拉力)平衡水平荷载(风、列车制动力及地震作用)以满足正常行车要求，强震中桥墩充分利用牺牲部件破坏与提离摇摆耗能隔震，震后靠自重实现自复位，最大程度地避免桥墩与承台受到损伤。且牺牲部件具有良好的可更换性，震后可通过更换牺牲部件使桥墩恢复到原有的功能水平，有效降低维护成本，同时，也为桥墩增设了一道抗震防线，保障提高桥墩的抗震安全性。
Self-resetting bridge pier with sacrifice component
一种带牺牲部件自复位桥墩
XIA XIUSHEN (Autor:in) / ZHANG YONGQIANG (Autor:in) / ZHONG YAWEI (Autor:in) / DAI SHENGYONG (Autor:in)
05.05.2023
Patent
Elektronische Ressource
Chinesisch
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