| 黄慎江,陈宇.基于构件拆除法的不规则预压装配式框架连续倒塌分析[J].安徽建筑大学学报,2022,30(6):1-7 |
| 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 |
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| DOI： |
| 中文关键词: 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 |
| 英文关键词: irregular frame component removal method progressive collapse prepressed frame structure ABAQUS simulation analysis |
| 基金项目: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） |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| 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. |
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