弹塑性状态下扭转中心移动分析  

Analysis of torsion center movement under elastoplastic state

作　　者：田志昌 王彪 TIAN Zhichang;WANG Biao(Civil Engineering School,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学土木工程学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2021年第2期186-190,共5页Journal of Inner Mongolia University of Science and Technology

摘　　要：钢筋混凝土结构如在地震中发生扭转,破坏将非常严重.一般认为地震中不易产生扭转的结构抗震性能优越.但是,许多建筑做不到结构规则,质量布置匀称,所以扭转变形不易避免,尤其结构处于弹塑性状态下扭转变形不可避免.因此,研究建筑结构弹塑性状态下的扭转中心与质量中心之间的关系,对提高建筑结构抗震性能有重要意义.通过对强度中心和刚度中心的移动分析,结果表明,随着静力推覆,强度中心有逐步向质量中心靠近的趋势,扭转变形逐步减小.If a reinforced concrete structure is torsional during an earthquake,the damage will be severe.It is generally believed that structures that are less prone to torsion during earthquakes have superior seismic performance.However,many buildings fail to follow structural rules and their quality is well-distributed,so torsional deformation is not easy to avoid,especially when the structure is in e-lastoplastic state.Therefore,studying the relationship between the torsion center and the center of mass in the elastoplastic state of a building structure is of great significance for improving the seismic performance of the building structure.Through the analysis of the movement of the strength center and the stiffness center,the conclusion is as follows:with the PUSH-OVER,the strength center gradually approaches the center of mass,and the torsional deformation gradually decreases.

关 键 词：静力推覆 强度中心 刚度中心 

分 类 号：TU241[建筑科学—建筑设计及理论]