摘 要桥台与桥台台后回填土的相互作用可以显著影响桥梁的地震反应。国外关于桥台台后填土的理论讨论方法有很多。但是由于台土相互作用的复杂性，在台后填土的分析方法和讨论着重点上还有许多目前尚未解决和完善的问题。因此通过实桥试验对地震作用下桥台台后填土被动土压力-位移曲线用多种常用的方法来讨论便加以对比是十分必要的，本文中用到四种计算方法，三种位移模式进行讨论，具有实际的应用价值。本文主要进行了以下讨论工作： （1）学习和总结国外各种土压力的计算方法，并了解每种计算方法的适用条件和影响因素；（2）学习和掌握几种有用的土压力位移曲线模式，并且了解每种模式的适用条件和影响因素；（3）重点掌握经典土压力计算方法，胡晓军和谭晓慧改进的库仑被动土压力计算方法对数螺旋-条分法等四种计算方法和 Duncan 双曲线方法、HFD方法、LSH 方法等三种力-位移关系的确定方法，并运用于实桥； （4）对不同计算方法和计算模式得到的结果加以分析和综合，从而更深刻的了解这些公式的适用条件、意义和优点；关键词：地震；计算方法；计算模式；台后土压力；位移；AbstractAbutment-backfill soil interaction can significantly influence the seismic response of bridges.The experts at home and abroad have done many theory research about abutment-backfill soil,but because of the complexity of abutment-soil interaction,there are many problem having not been solved on the methods of analysis and design of the earth pressure,so it is necessary to use a verity of methods to study bridge abutment backfill passive earth pressure - displacement curves under earthquake.Four methods of computation and three kinds of displacement mode are used in this article,with practical application value.This paper conducted the following studies:(1)Learning and summarizing various kinds of earth pressure calculation method home and abroad,and to understand the influence of each method; (2)Learning and summarizing various kinds of earth pressure displacement curve mode home and abroad,and to understand the influence of each ...
