摘要
基础动力响应的求解对于更好地理解结构–地基相互作用具有重要的意义,而以往的相关研究主要求解各向同性层状地基内的频域解,对于横观各向同性层状地基,尤其是时域解目前较少有相关报道。针对横观各向同性层状地基,利用积分变换方法、混合变量技术以及改进相减模型求解得到了任意形状基础动力响应的时域解。数值算例验证了算法的准确性,同时针对横观各向同性属性中水平向和竖直向材料参数的不同对时域内基础动力响应的影响进行了参数分析。结果表明,地基的非均质特性对于基础动力响应有显著的影响,在实际工程中应予以考虑,以求得到更加精确的结果。
The solution of dynamic response of foundation is of great significance for a better understanding of the structure-soil interaction.However,the previous studies have mainly solved the frequency-domain solution for the isotropic layered soil,and few reports have been presented on the transverse isotropic layered soil,especially the solution in time domain.In the study,the dynamic response solution for the arbitrarily shaped foundation resting on(or)embedded in transversely isotropic multi-layered soil in time domain is obtained by using the integral transformation method,mixed variable technique and modified subtraction model.Numerical examples verify the accuracy of the proposed algorithm.Then a parameter study is carried out to analyze the influences of the difference between the material parameters in horizontal and vertical directions on the dynamic response of foundation in time domain.The results show that the heterogeneity of the soil has a significant effect on the dynamic response of the foundation,which should be considered in practical projects to obtain more accurate results.
作者
杨林青
韩泽军
林皋
周小文
潘宗泽
YANG Lin-qing;HAN Ze-jun;LIN Gao;ZHOU Xiao-wen;PAN Zong-ze(School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510641,China;Tianhe College of Guangdong Polytechnic Normal University,Guangzhou 510540,China;Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China)
出处
《岩土工程学报》
EI
CAS
CSCD
北大核心
2020年第7期1257-1267,共11页
Chinese Journal of Geotechnical Engineering
基金
国家自然科学基金青年基金项目(51508203)
中央高校基本科研业务费面上项目(2018MS61)。
关键词
横观各向同性层状地基
任意形状基础
积分变换方法
混合变量技术
时域解
transversely isotropic layered soil
arbitrarily shaped foundation
integral transformation method
mixed variable technology
time-domain solution
