Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Anchorage device structure capable of reducing prestress loss caused by anchorage device retraction
The invention discloses an anchorage device structure capable of reducing prestress loss caused by anchorage device retraction, and belongs to the technical field of building anchorage device structures. According to the anchorage device structure with elastic supporting pieces for compensating shrinkage, displacement generated between abutted seams is compensated by compression of the elastic supporting pieces under the earthquake action of a prefabricated assembled pier; the phenomenon that the prestress is greatly increased due to the fact that the prestressed tendons are excessively stretched is avoided, and therefore retraction of the clamping pieces is avoided. The deformation near the anchorage device is replaced by the compression of the elastic supporting piece, irreversible prestress loss caused by retraction at the position of the clamping piece is avoided, and compared with a conventional anchorage device, the behavior of prestress loss caused by retraction of the clamping piece due to stretching of the prestressed tendon of the unbonded prestressed prefabricated assembled pier under the action of earthquake is solved, and the service life of the unbonded prestressed prefabricated assembled pier is prolonged. The patent is clear in action mechanism, simple in structure and convenient to process, install and use.
本发明公开了一种减小锚具回缩导致预应力损失的锚具结构，属于建筑锚具结构技术领域，弹性支撑件补偿收缩的锚具结构，在预制拼装桥墩遇地震作用下拼缝间产生的位移将由弹性支撑件压缩来补偿，避免了预应力筋被过大拉伸造成的预应力大幅增大，从而避免了夹片的回缩。也就是使锚具附近的变形让弹性支撑件的压缩来替代，避免夹片位置处的回缩产生不可逆的预应力损失，相较于常规锚具，解决了地震动作用下，无粘结预应力预制拼装桥墩预应力筋拉伸造成的夹片回缩，从而导致预应力损失的行为，专利作用机理明确，构造简便，便于加工和安装使用。
Anchorage device structure capable of reducing prestress loss caused by anchorage device retraction
The invention discloses an anchorage device structure capable of reducing prestress loss caused by anchorage device retraction, and belongs to the technical field of building anchorage device structures. According to the anchorage device structure with elastic supporting pieces for compensating shrinkage, displacement generated between abutted seams is compensated by compression of the elastic supporting pieces under the earthquake action of a prefabricated assembled pier; the phenomenon that the prestress is greatly increased due to the fact that the prestressed tendons are excessively stretched is avoided, and therefore retraction of the clamping pieces is avoided. The deformation near the anchorage device is replaced by the compression of the elastic supporting piece, irreversible prestress loss caused by retraction at the position of the clamping piece is avoided, and compared with a conventional anchorage device, the behavior of prestress loss caused by retraction of the clamping piece due to stretching of the prestressed tendon of the unbonded prestressed prefabricated assembled pier under the action of earthquake is solved, and the service life of the unbonded prestressed prefabricated assembled pier is prolonged. The patent is clear in action mechanism, simple in structure and convenient to process, install and use.
本发明公开了一种减小锚具回缩导致预应力损失的锚具结构，属于建筑锚具结构技术领域，弹性支撑件补偿收缩的锚具结构，在预制拼装桥墩遇地震作用下拼缝间产生的位移将由弹性支撑件压缩来补偿，避免了预应力筋被过大拉伸造成的预应力大幅增大，从而避免了夹片的回缩。也就是使锚具附近的变形让弹性支撑件的压缩来替代，避免夹片位置处的回缩产生不可逆的预应力损失，相较于常规锚具，解决了地震动作用下，无粘结预应力预制拼装桥墩预应力筋拉伸造成的夹片回缩，从而导致预应力损失的行为，专利作用机理明确，构造简便，便于加工和安装使用。
Anchorage device structure capable of reducing prestress loss caused by anchorage device retraction
一种减小锚具回缩导致预应力损失的锚具结构
CAO YANHUI (Autor:in) / JIA JUNFENG (Autor:in) / OU JINPING (Autor:in)
20.02.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2020
Anchorage and prestress transmission
| UB Braunschweig | 1970