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A platform for research: civil engineering, architecture and urbanism
Prefabricated assembly pier with multi-plastic-section energy dissipation capacity
The prefabricated bridge pier with the multi-plastic-section energy dissipation capacity comprises a bottom bearing platform, a second notch and a tenon, a first anchorage device is installed at the lower end of a prestressed steel bar, a second anchorage device is connected to the upper end of the prestressed steel bar, and a rubber gasket is laid on a concave mortise. Compared with a traditional segment type prefabricated assembly pier, the prefabricated assembly pier with the multi-plastic-segment energy dissipation capacity has the advantages that energy dissipation of the energy dissipation devices on two segments or multiple segments is achieved by adjusting the strength of the energy dissipation devices of all the assembly segments and distributing deformation to different energy dissipation areas, plastic deformation of a single energy dissipation area is reduced, and the energy dissipation efficiency is improved. Excessive damage to concrete of the assembly section is avoided, and post-earthquake recovery is facilitated; the plastic deformation is moved outwards to the energy dissipater, so that the pier is provided with a plurality of plastic hinge areas, and the anti-seismic property is improved; the tenon-and-mortise structures are additionally arranged at the splicing positions, so that the lateral shear resistance of the segmental pier is improved, and meanwhile, the self-resetting capacity and the energy dissipation capacity of the segmental pier are improved.
本发明公开了一种具备多塑性段耗能能力的预制装配桥墩，包括底部承台、第二槽口和凸榫，所述预应力钢棒下端安装有第一锚具，且预应力钢棒上端连接有第二锚具，所述凹卯上铺设有橡胶垫片。该具备多塑性段耗能能力的预制装配桥墩，与传统的节段式预制拼装桥墩相比，通过调整各拼装段耗能器强度，将变形分配至不同的耗能域，实现在二段或多节段上的耗能器耗能，减小了单一耗能区域的塑性变形，避免拼装段混凝土过大损伤，有利于震后恢复；通过将塑性变形外移至耗能器上，使桥墩具有多个塑性铰区，有利于提高抗震性能；通过在各拼装位置添加榫卯结构，提高了节段式桥墩的侧向抗剪能力，同时提高了节段式桥墩的自复位能力和耗能能力。
Prefabricated assembly pier with multi-plastic-section energy dissipation capacity
The prefabricated bridge pier with the multi-plastic-section energy dissipation capacity comprises a bottom bearing platform, a second notch and a tenon, a first anchorage device is installed at the lower end of a prestressed steel bar, a second anchorage device is connected to the upper end of the prestressed steel bar, and a rubber gasket is laid on a concave mortise. Compared with a traditional segment type prefabricated assembly pier, the prefabricated assembly pier with the multi-plastic-segment energy dissipation capacity has the advantages that energy dissipation of the energy dissipation devices on two segments or multiple segments is achieved by adjusting the strength of the energy dissipation devices of all the assembly segments and distributing deformation to different energy dissipation areas, plastic deformation of a single energy dissipation area is reduced, and the energy dissipation efficiency is improved. Excessive damage to concrete of the assembly section is avoided, and post-earthquake recovery is facilitated; the plastic deformation is moved outwards to the energy dissipater, so that the pier is provided with a plurality of plastic hinge areas, and the anti-seismic property is improved; the tenon-and-mortise structures are additionally arranged at the splicing positions, so that the lateral shear resistance of the segmental pier is improved, and meanwhile, the self-resetting capacity and the energy dissipation capacity of the segmental pier are improved.
本发明公开了一种具备多塑性段耗能能力的预制装配桥墩，包括底部承台、第二槽口和凸榫，所述预应力钢棒下端安装有第一锚具，且预应力钢棒上端连接有第二锚具，所述凹卯上铺设有橡胶垫片。该具备多塑性段耗能能力的预制装配桥墩，与传统的节段式预制拼装桥墩相比，通过调整各拼装段耗能器强度，将变形分配至不同的耗能域，实现在二段或多节段上的耗能器耗能，减小了单一耗能区域的塑性变形，避免拼装段混凝土过大损伤，有利于震后恢复；通过将塑性变形外移至耗能器上，使桥墩具有多个塑性铰区，有利于提高抗震性能；通过在各拼装位置添加榫卯结构，提高了节段式桥墩的侧向抗剪能力，同时提高了节段式桥墩的自复位能力和耗能能力。
Prefabricated assembly pier with multi-plastic-section energy dissipation capacity
一种具备多塑性段耗能能力的预制装配桥墩
DAI KUANGYU (author) / SU JIAN (author) / SONG GUOHUA (author) / WANG XUELI (author) / YANG JUNWEI (author)
2022-03-25
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
Mixed-connected multi-section prefabricated assembled pier
| European Patent Office | 2022