摘要
基于含上覆硬土层可液化场地-桩基础-上部结构的振动台试验,建立了试验的数值模型,对比了砂土可液化弹塑性本构模型,桩-土界面模型以及不同土层的界面模型。并通过数值和试验结果分析,验证了数值模型的可行性,从系统的孔压、加速度、位移和桩基曲率方面论证了上覆硬土层对桩基础地震破坏的影响规律。
This paper is based on a shaking table test of a liquefiable site with an overlying hard soil layer-pile foundation-superstructure system.A numerical model of the test was established,which incorporates a sand liquefaction elastoplastic constitutive model,a pile-soil interface model,and interface models for different soil layers.By comparing the numerical and experimental results,the feasibility of the numerical model was validated.The influence of the overlying hard soil layer on the seismic damage of the pile foundation was analyzed in terms of the system’s pore pressure,acceleration,displacement,and pile curvature.
作者
尹智超
宋佳
马雪莲
宋雪岩
郑康宁
Yin Zhichao;Song Jia;Ma Xuelian;Song Xueyan;Zheng Kangning(North China University of Technology,Beijing 100144,China)
出处
《山西建筑》
2026年第2期82-87,共6页
Shanxi Architecture
基金
国家自然科学基金青年项目(项目编号:51808006)
北京市自然科学基金面上项目(项目编号:8192012)。
关键词
砂土液化
微倾斜场地
上覆硬土
地震破坏机理
孔隙水
sand liquefaction
slightly inclined site
overlying stiff soil
seismic failure mechanism
pore water
