基于构件拆除法的不规则预压装配式框架连续倒塌分析  

Progressive Collapse Analysis of Irregular Pre-pressed Frame Structure Based on Column Removal Method

作　　者：黄慎江[1] 陈宇 HUANG Shenjiang;CHEN Yu(College of Civil Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]合肥工业大学土木与水利工程学院,安徽合肥230009

出　　处：《安徽建筑大学学报》2022年第6期1-7,39,共8页Journal of Anhui Jianzhu University

基　　金：国家自然科学青年科学基金项目(JZ2016GJQN0921);安徽省自然科学基金项目(JZ2015AKZR0029)。

摘　　要：文章通过ABAQUS有限元模拟软件建立了L形平面不规则预压装配式PC框架,设置多种不同工况,研究了拆除各个位置承重柱后该框架剩余结构的抗连续倒塌机理。研究表明:预压装配式结构可提高结构整体的最大抗力;预应力钢筋的配置可提高结构的抗连续倒塌能力,并在悬链线阶段提高效果明显;柱失效位置对结构抗连续倒塌有着重大的影响,转角柱的结构抗连续倒塌性能介于内柱与长边中柱之间,其破坏位置越低,破坏时间越早,破坏范围越大。The article uses ABAQUS finite element simulation software to establish an L-shaped plane irregularly pre-pressed assembled PC frame.Setting a variety of working conditions,the mechanism of structural resistance against progressive collapse of the remaining frame structure was studied when removing different load-bearing columns.The results show that the pre-pressed assembly structure can increase the maximum resistance of the structure;the configuration of prestressed steel bars can improve the structural resistance against progressive collapse,and the effect is better in the catenary stage.The failure position of the column has a significant impact on the structural resistance against progressive collapse,and the resistance of the corner column is between the inner column and the long-side center column.The lower the failure position and the earlier the failure time,the larger the failure range.

关 键 词：不规则框架 构件拆除法 连续性倒塌 预压装配式结构 ABAQUS仿真分析 

分 类 号：TU378.4[建筑科学—结构工程]