摘要
目前,我国尚缺乏液化场地桩-土-桥梁结构地震相互作用分析的合理数值模型与简化分析方法。鉴于此,直接针对振动台试验,基于非线性文克尔地基梁模型,考虑桩周参振土的质量惯性力、上部结构的惯性力、土体辐射阻尼等效应,建立了液化场地桩-土-桥梁结构地震相互作用的p-y曲线分析模型,并给出相应的简化方法。针对振动台试验进行了0.1g El Centro波输入下的分析,验证了桩-土地震相互作用分析方法的正确性,并且推荐了计算参数的合理选取方法,可用于液化场地桩-土地震相互作用的分析。提出的液化场地桩-土地震相互作用p-y曲线简化分析方法,为实际桥梁桩基抗震设计与分析提供一定参考。
Our country does not have rational numerical models and simplified analysis methods for analyzing seismic pile-soil-bridge structure interaction in liquefying ground nowadays.For that reason,a p-y curve analysis model for seismic pile-soil-bridge structure interaction in liquefying ground is built,and the corresponding simplified method is given.The model is based on the nonlinear Winkler foundation beam model with the consideration of the mass inertia force of soil around pile,inertia force of superstructure,and soil radiation damping,etc,specificly for shaking table tests.Based on the shaking table tests,analytical result under El Centro wave with amplitude of 0.1 g proves that the analysis method of seismic pile-soil interaction is valid,and indicates the reasonable selective methods of calculation parameters to be used for the analysis of seismic pile-soil interaction in liquefying ground.The proposed p-y curve simplified method of seismic pile-soil interaction in liquefying ground can supply certain reference for the seismic design and analysis of practical bridge pile foundation.
出处
《世界地震工程》
CSCD
北大核心
2010年第S1期109-113,共5页
World Earthquake Engineering
基金
国家自然科学基金重大研究计划项目(90815009)
西部交通建设科技项目(2009318000100)
教育部留学回国人员科研启动基金项目(2010年第37批)
国家自然科学基金项目(50378031
50178027)
