大挑臂桩柱式桥墩抗震性能分析

Analysis on Anti-seismic Properties of Large-cantilever Pile Columnar Pier

摘要:

以南宁市某大桥引桥为工程实例，分析采用桩柱形式的双柱墩结构的抗震性能。结果表明，上部结构采用小箱梁结构，并通过合理的跨径布置和支座选型，能够保证下部结构在按静力受力要求配筋的情况下，在E1和E2地震作用下均处于弹性工作状态。

关键词:桩柱式;双柱墩;抗震分析

Abstract:

Taking a bridge approach in Nanning City as an engineering example, the anti-seismic properties of the used pile columnar pier double-pier structure are analyzed. The result shows that the superstructure is a small-box beam structure. Through the reasonable span layout and support selection, the substructure can be ensured to reinforce according to the static force requirements, and to be all in the flexible working state under the action of E1 and E2 earthquakes.

Key words:pile columnar, double-pier, anti-seismic analysis