桩土相互作用对剪力墙结构动力特性的影响

摘要

探讨了桩土相互作用对剪力墙结构周期和振型的影响，采用ABAQUS有限元软件对某剪力墙结构分别进行不考虑桩土相互作用与考虑桩土相互作用下的模态分析，并考察地基土模量、地基土层分布状况、桩长等因素对桩土共同作用下剪力墙结构周期和对应振型的影响规律。分析结果表明，桩土相互作用下剪力墙结构周期减小，振型发生改变；地基土模量、土层分布状况对桩土相互作用下的结构周期影响显著，桩长因素影响较小。%The paper explores the influence of mutual effects between piles and soil on structural periods and vibration types of shearing wall structure,adopts the finite element software ABAQUS,to undertake the modular analysis with and without mutual effects between piles and soil in the shearing walls,observes the influence law for the structural periods and response vibration of the foundation soil modulus,distribution of foun-dation stratum,and pile length,and proves by the analysis that the shearing wall period decreases with varying vibration types under the mutual effect of piles and soil,and the foundation soil modulus and stratum distribution has the evident influence on the structural period while it has slight effect on pile length.