高层钢框架与群桩-土共同作用的三维空间结构系统地震动时程响应分析  

Time History Response Analysis of 3D Spatial Structural System with Mutual Action between Tall Steel Frame and Group Piles-Soil System under Earthquake

作　　者：王志建[1] 沈小璞[1] 

机构地区：[1]安徽建筑工业学院土木工程系,合肥230022

出　　处：《工程抗震》2004年第2期17-22,24,共7页Earthquake Resistant Engineering

基　　金：安徽省自然科学基金资助(编号:01044504)

摘　　要：考虑在软土地基上高层钢框架与群桩-土之间共同作用的影响,提出应用整体空间力学分析方法,建立相应的三维空间串并联质点动力计算简图和计算方法,着重分析了群桩-地基土对上部钢框架结构动态受力的影响情况,包括结构振型、周期、位移、内力等动力特性及地震反应。并与刚性地基基础情况下的结构计算结果进行比较,认为此类结构在地震动作用下,共同作用的影响不可忽视,指出结构分析及设计中应注意的一些问题。Considering the influence of the mutual action between tall steel frame and group piles-soil system on soft ground, an analytical method applying integral spatial mechanics is presented. The corresponding dynamic calculating scheme and method with series - parallel connecting masses in 3D space are established. The influence of group piles ground soil system to the steel frame above is analyzed emphatically, including the dynamic characteristics like vibration modes, vibration periods, displacements and earthquake response. They are compared with the calculating results of the same structure on rigid foundation. The influence of the mutual action of such type of structures should not be overlooked under earthquake. Problems that should be taken attention in structural analysis and design are pointed out.

关 键 词：高层建筑 钢框架 群桩 土 时程反应 三维空间结构 

分 类 号：TU311.3[建筑科学—结构工程]