Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides an energy dissipation and seismic mitigation type self-resetting prefabricated segment assembled pier structure and a construction method thereof. The pier structure comprises abearing platform, a pier body, prefabricated sections, a bent cap and unbonded prestressed tendons, wherein the pier body is arranged on the bearing platform; the bent cap is arranged on the pier body; the bearing platform, the pier body and the bent cap are connected into a whole through the unbonded prestressed tendons; the pier body is formed by vertically stacking a plurality of prefabricatedsections; combined type steel pin rod (lead pin rod) shear keys are evenly arranged in the cross section of the joint between every two of the bearing platform, the prefabricated segment and the bentcap; the outer side of the joint area is connected through a low-carbon steel energy dissipation plate. The shear torsion resistance and the energy dissipation capacity of the pier are improved through the combined shear keys and the low-carbon steel energy dissipation plates, and meanwhile, the lateral stiffness of the pier at different heights is adjusted through the prestressed tendons which are dispersedly anchored in multiple sections, so that the anti-seismic requirements under the action of different levels of earthquakes are met.
本发明提供了一种耗能减震型自复位预制节段拼装桥墩结构及其施工方法。该桥墩结构包括：承台、墩身、预制节段、盖梁和无粘结预应力筋，墩身设置在承台上，盖梁设置在墩身上，承台、墩身和盖梁通过无粘结预应力筋连接形成整体，墩身由若干预制节段垂直堆叠构成；承台、预制节段及盖梁两两之间的接缝截面内均匀设置组合式钢销棒(铅销棒)剪力键，接缝区域外侧采用低碳钢耗能板连接。本发明利用组合式剪力键和低碳钢耗能板提高桥墩抗剪扭能力和耗能能力，同时采用多束分节段分散锚固的预应力筋调整桥墩不同高度的抗侧刚度，从而满足不同水平地震作用下的抗震需求。
The invention provides an energy dissipation and seismic mitigation type self-resetting prefabricated segment assembled pier structure and a construction method thereof. The pier structure comprises abearing platform, a pier body, prefabricated sections, a bent cap and unbonded prestressed tendons, wherein the pier body is arranged on the bearing platform; the bent cap is arranged on the pier body; the bearing platform, the pier body and the bent cap are connected into a whole through the unbonded prestressed tendons; the pier body is formed by vertically stacking a plurality of prefabricatedsections; combined type steel pin rod (lead pin rod) shear keys are evenly arranged in the cross section of the joint between every two of the bearing platform, the prefabricated segment and the bentcap; the outer side of the joint area is connected through a low-carbon steel energy dissipation plate. The shear torsion resistance and the energy dissipation capacity of the pier are improved through the combined shear keys and the low-carbon steel energy dissipation plates, and meanwhile, the lateral stiffness of the pier at different heights is adjusted through the prestressed tendons which are dispersedly anchored in multiple sections, so that the anti-seismic requirements under the action of different levels of earthquakes are met.
本发明提供了一种耗能减震型自复位预制节段拼装桥墩结构及其施工方法。该桥墩结构包括：承台、墩身、预制节段、盖梁和无粘结预应力筋，墩身设置在承台上，盖梁设置在墩身上，承台、墩身和盖梁通过无粘结预应力筋连接形成整体，墩身由若干预制节段垂直堆叠构成；承台、预制节段及盖梁两两之间的接缝截面内均匀设置组合式钢销棒(铅销棒)剪力键，接缝区域外侧采用低碳钢耗能板连接。本发明利用组合式剪力键和低碳钢耗能板提高桥墩抗剪扭能力和耗能能力，同时采用多束分节段分散锚固的预应力筋调整桥墩不同高度的抗侧刚度，从而满足不同水平地震作用下的抗震需求。
Energy dissipation and seismic mitigation type self-resetting prefabricated segment assembled pier structure and construction method thereof
耗能减震型自复位预制节段拼装桥墩结构及其施工方法
20.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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