摘要
为研究含局部网架的混凝土框架结构抗连续倒塌性能,本文基于SAP2000程序建立结构有限元模型,并考虑局部网架位于顶层框架中部以及边部等布置方式,采用拆除构件法对该类结构进行抗连续倒塌分析。结果表明:对于含局部网架的混凝土框架结构,拆除网架边缘底层柱子后,其柱顶的位移响应小于纯混凝土框架拆除同位置柱后柱顶的位移响应;网架的布置方式对柱顶的最大位移有一定影响,其中网架布置在结构平面边部时,对应的柱顶最大位移相比网架平面布置在结构中部时对应的最大位移约少18%。本文结果可为同类研究提供参考。
In order to study the anti-progressive collapse performance of concrete frame structures with local grids, the finite element models of this structure is established based on SAP2000 program. The layouts of local grid structure located in the middle of top floor and in the edge of the top floor are taken into consideration, the anti-progressive collapse performance of this kind of structure is analyzed by column removal method. The results show that the displacement response of the column top after removing the column of bottom floor of the edge of the grid is less than the concrete frame after removing the column in the same position;layout of the grid has an impact on the maximum displacement of the column top, the maximum displacement of the column top when the grid is arranged at the edge of the structure plane is less about 18% than the maximum displacement of the column top when the grid is arranged in the middle of the structure.The results can provide references for similar projects.
作者
罗文辉
陈治茂
周浩
蒋友宝
LUO Wenhui;CHEN Zhimao;JIANG Youbao;ZHOU Hao(School of Civil Engineering,Changsha University of Science&Technology,Changsha 410004,Hunan,China)
出处
《工程建设》
2021年第6期1-5,11,共6页
Engineering Construction
基金
国家自然科学基金资助项目(51678072)
湖南省研究生科研创新项目(CX20190655)
长沙理工大学土木工程重点学科创新性项目(18ZDXK01)。
