基于变形修正的反应位移法改进研究  

Research on the Improvement of the Response Displacement Method Based on Deformation Modification

作　　者：宾佳[1] 景立平[2] 李永强[2] BIN Jia;JING Liping;LI Yongqiang(School of Civil Engineering,Hunan University of Technology,Zhuzhou Hunan 412007,China;Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,China)

机构地区：[1]湖南工业大学土木工程学院,湖南株洲412007 [2]中国地震局工程力学研究所,黑龙江哈尔滨150080

出　　处：《湖南工业大学学报》2017年第2期38-43,共6页Journal of Hunan University of Technology

基　　金：国家自然科学基金资助项目(51438004);国家自然科学基金资助青年项目(51408566);中央级公益性研究所基本科研业务费专项基金资助项目(2014B03)

摘　　要：对目前地下结构抗震分析中的土-结相互作用系数法和反应位移法进行了分析,结合二者的优点,提出了一种基于变形修正的改进反应位移法。改进反应位移法是在传统反应位移法的基础上,通过土-结相互作用系数法中的结构变形,对反应位移法中的结构变形进行修正,从而对结构内力进行调整,减小了传统反应位移法的误差。为验证改进方法的有效性,通过改变结构的截面尺寸、土体刚度和结构埋深,分别用传统反应位移法、改进反应位移法和动力时程分析方法进行对比计算。结果表明:改进反应位移法的计算结果要好于传统反应位移法;改进反应位移法只是整体地放大或缩小传统反应位移法的计算结果,并不能改变结构内力的分布形式;传统反应位移法仍存在较大的误差。Based on an analysis made of the soil-structure interaction coefficient method and the response displacement method applied to the seismic analysis of underground structures,an improved response displacement method of deformation modification has thus been proposed,with the advantages of the former two methods integrated.The improved response displacement method,which is based on the traditional response of the displacement method,makes an modification of the structural deformation of the reaction displacement method by the deformation of the soilstructural interaction coefficient method,thus adjusting the internal force of the structure and reducing the error of the traditional response displacement method.In order to verify the effectiveness of the improved method,a comparative calculation has been made between the traditional response displacement,the improved response displacement method and the dynamic analysis method by altering the dimension of the structure,the stiffness of the soil and the depth of the structure.The results show that:the overall calculation results of the improved response displacement method are more favorable than the conventional response displacement method;the improved response displacement method can generally enlarge or reduce the result from the traditional response displacement method,but cannot change the distribution form of the internal force of structures;there still exists considerable errors in the traditional response displacement method.

关 键 词：地下结构 抗震分析 反应位移法 土-结相互作用系数法 

分 类 号：TU93[建筑科学—结构工程] P315.9[天文地球—地震学]