空间巨型框架结构与地基基础共同工作的自由振动简化分析  

A simplified analysis for free vibration of interactions between subgrade-foundation and superstructure of space mega frame

作　　者：白俊英[1,2] 马伏龙[3] 

机构地区：[1]宁夏大学土木与水利工程学院,宁夏银川750021 [2]宁夏节水灌溉与水资源调控工程技术研究中心,宁夏银川750021 [3]宁夏大学机械工程学院,宁夏银川750021

出　　处：《宁夏工程技术》2012年第4期359-361,367,共4页Ningxia Engineering Technology

基　　金：宁夏大学科学研究基金项目(ZR1239)

摘　　要：采用由巨型柱和巨型弹性地基梁组成的空间巨型框架,将其与基础结构建立在具有半无限大弹性地基等效刚度的弹性地基模型上,建立三维分析模型,将整个建筑物的质量分配到巨型梁所在的楼层上,在考虑了地基的弹性变形后,采用空间杆系-层的简化分析模型进行动力分析.为弹性地基上的空间巨型框架结构的动力分析找到一种合理并可行的简化算法.Adopting space mega frame that composed by the mega column and mega beam on elastic subgrade, built its foundation and itself on elastic subgrade model which is semi infinite elastic subgrade with equivalent stiffness, and then three-dimensional analysis model is established. The whole mass of structure is acted on the floors of mega beam, and after considering elastic deformation of subgrade, the simplified model, named space-pole-storey model, is used to dynamic analysis. Consequantly a reasonable and feasible simplified method for dynamic analysis of space mega frames on elastic subgrade is presented.

关 键 词：空间巨型框架 弹性地基 共同工作 自由振动 

分 类 号：TU470[建筑科学—结构工程]