【摘要】 地震液化产生的侧向滑移或流动地层对桩基础的破坏作用一直缺乏系统的震灾调查数据和统计分析,对设计方法的修订也缺乏相应的理论依据。本文对地震液化地层滑移作用,软硬互层交界面效应等进行应力简化,基于修正Winkler地基梁理论及日本抗震规范推荐的响应位移法,通过对桩基破坏的算例分析,初步验证了应力解析法的有效和实用性,为我国近期发生的浅源断层大地震区的桩基抗震设计提供借鉴。更多还原

【Abstract】 For short of the systemic statistical data of the damaged pile foundations in liquefaction and lateral flow layers after the great earthquake,the improvement of the theory and the design method also is absence the relevant basement.Through the simplified stress method to deal with the liquefied slip layers and the soft-hard interfaces,the modified Winkler beam theory and the response-displacement method,which were recommended by the guide manual of Japan Architecture Association,are introduced to analysis the certain example.The effective and practicability of the method can be validated in the first step.Research can be referenced in the seismic control and design method for the pile foundation in the future.更多还原