高速铁路重力式桥墩桩基础的抗震设计及研究进展

doi:10.13722/j.cnki.jrme.2014.0278

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Abstract Concrete gravity pier with bored pile foundation are widely used in high speed railway bridge in China. According to the main structural characteristics of high speed railway bridge，the characteristics of seismic response were introduced. Due to the larger transverse rigidity of pier shafts and larger cross-section resistance，seismic action of high speed railway bridge pile foundation is also bigger，so it is difficult to achieve capacity design based on intensity control. By comparing the different requirements of seismic performance for pile foundation from AASHTO(LRFD)，Eurocode 8，bridge manual of transit New Zealand and seismic design standards and explanations for railway structures of Japan，it is necessary that the pile foundation of high speed railway bridge should transform from capacity design to performance-based seismic design. The ideal of multiple seismic fortifications should be adopted for pile foundation according to the importance of bridges，and plastic energy dissipation of foundation soil should be reasonably used in order to reduce horizontal earthquake action of bridge piers. The latest research progress of the nonlinear static calculation model of pile foundation under strong earthquake was introduced，and reasonable simulation method for the nonlinearity of foundation soil was summarized.

Key words： pile foundations high-speed railway gravity pier seismic design calculation model

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2014.0278 OR http://www.rockmech.org/EN/Y2015/V34/Is1/3518

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