基于水平地震荷载下桩-土-框架结构动力响应分析  

Analysis of Dynamic Response of Pile-soil-frame Structure Based on Horizontal Seismic Loading

作　　者：邹小牛 ZOU Xiaoniu(Jiangxi Construction International Engineering Co.,Ltd.,Nanchang 330001,Jiangxi,China)

机构地区：[1]江西建工国际工程有限责任公司,江西南昌330001

出　　处：《建筑施工》2023年第7期1487-1490,共4页Building Construction

摘　　要：为研究在考虑地基-基础-上部结构相互作用时上部结构的地震响应问题,对桩-土-结构相互作用体系进行了三维有限元数值模拟,利用六弹簧模型简化处理桩基础,等代土弹簧模拟土体约束,结合通用有限元软件SAP2000,建立了水平地震作用下桩-土-框架结构的相互作用分析模型。以某一具体结构为研究对象,分析了上部结构在相互作用条件下的自振周期和水平位移,并与传统方法对比;同时研究了上部结构层数、地下室层数及土体刚度变化对上部结构地震响应的影响。通过比较分析,得出相关的结论,可为工程设计提供参考。In order to study the seismic response of the superstructure when considering the foundation-foundationsuperstructure interaction,a three-dimensional finite element numerical simulation of the pile-soil-structure interaction system is carried out,using a six-spring model to simplify the treatment of pile foundations,and equal substitution of soil springs to simulate soil constraints,combined with the general finite element software SAP200o,the interaction analytical model of the pile-soil-frame structure under horizontal seismic action is established.Taking a specific structure as the research object,the self-oscillation period and horizontal displacement of the superstructure under the interaction condition are analyzed and compared with the traditional method;the influence of the number of superstructure layers,basement layers and soil stifness changes on the seismic response of the superstructure is also studied.Through comparative analysis,relevant conclusions have been drawn,which can provide references for engineering design.

关 键 词：桩-土-结构相互作用 线弹性时程分析 土弹簧 SAP2000 数值模拟 

分 类 号：TU435[建筑科学—岩土工程]