基于等效线性化的动力时程分析简便方法  

A Simple Method for Dynamic Time History Analysis Based on Equivalent Linearization

作　　者：童桐 TONG Tong(School of Civil Engineering,Suzhou University of Science and Technology,Suzhou Jiangsu 215011,China)

机构地区：[1]苏州科技大学土木工程学院,江苏苏州215011

出　　处：《江苏建筑》2024年第6期91-95,共5页Jiangsu Construction

摘　　要：针对复杂场地,一维等效线性化不能很好地反映场地地形特征及土体的非线性特征,此时需要进行二维线弹性分析,文章针对二维线弹性分析中土体的参数取值提出了一种新的方法。为验证本文方法对于二维复杂场地条件的适用性,根据多个钻孔与日本小田原真实场地条件建立一维频域、一维时域和二维时域模型并进行分析对比,结果验证了本文方法在二维复杂场地条件下的可行性。For complex sites,one-dimensional equivalent linearization can not reflect the terrain characteristics of the site and the nonlinear characteristics of the soil.In this case,two-dimensional linear elastic analysis is needed.In this paper,a new method is proposed for the parameter value of soil in two-dimensional linear elastic analysis.In order to verify the applicability of the proposed method for two-dimensional complex site conditions,one-dimensional frequency domain,one-dimensional time domain,and two-dimensional time domain models were established based on multiple boreholes and real site conditions in Odawara,Japan.The results verified the feasibility of the proposed method under two-dimensional complex site conditions.

关 键 词：等效线性化 场地地震反应 复杂场地 土体参数 Rayleigh阻尼 

分 类 号：TU43[建筑科学—岩土工程]