全填充墙钢筋混凝土框架不同失效工况下的抗连续倒塌机理研究
引用文献：
党利荣 张银川 魏国强 姚树池 祁生旺. 全填充墙钢筋混凝土框架不同失效工况下的抗连续倒塌机理研究[J]. 建筑结构，2023，48（02）：100-106.
DANG Lirong ZHANG Yinchuan WEI Guoqiang YAO Shuchi QI Shengwang. Study on mechanism of anti-progressive collapse of full-height infill-wall reinforced concrete frames under different failure conditions[J]. Building Structure，2023,48（02）：100-106.
摘要：为研究失效工况对全填充墙钢筋混凝土(RC)框架结构抗连续倒塌性能的影响，基于有限元软件ABAQUS,建立了不同失效工况下的全填充墙RC框架的抗连续倒塌分析的精细化有限元模型，选取了合适的本构模型，并与已有的试验研究结果进行了对比，验证了建模方法和本构关系选取的合理性。在此基础上，通过对比分析了不同失效工况下的全填充墙RC框架结构抗连续倒塌的全过程荷载-位移关系、试件的整体破坏模式以及填充墙的局部破坏模式。结果表明：中柱失效工况下全填充墙RC框架的峰值荷载最高，次边柱失效工况下次之，边柱失效工况下最低；全填充墙RC框架边界在强约束作用下，与失效柱相连的框架梁发生破坏，但相邻柱并不发生破坏，且填充墙会形成撑杆效应，而弱约束作用下，试件框架梁和相邻柱均会发生破坏，边界一侧无约束作用下，破坏会向有边界约束侧的相邻跨发生传递。
关键词：RC框架；填充墙；连续性倒塌；数值模拟；失效工况；
基金：甘肃省科技计划资助(21JR7RE180)；天水市科技计划资助(2022-FZJHK-8557)；天水师范学院科研项目资助(CXJ2021-05)。
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[3] Design of buildings to resist progressive collapse:UFC 4-023-03 [S].Change 3.Washington,D.C.:Department of Defense,2016.
[4] 建筑结构抗倒塌设计规范：CECS 392—2014 [S].北京：中国计划出版社，2015.
[5] 孟宝，钟炜辉，郝际平.基于节点刚度的钢框架梁柱子结构抗倒塌性能试验研究[J].工程力学，2018,35(6):88-96.
[6] 李金威，陈俊岭.梁柱子结构形式对钢框架抗连续倒塌性能的影响[J].建筑结构，2019,49(S1):530-534.
[7] 王景玄，王文达，李华伟.钢管混凝土组合框架抗连续倒塌特征响应及参数分析[J].建筑结构，2017,47(19):86-92.
[8] 周云，陈太平，胡翔，等.考虑周边结构约束影响的RC框架结构防连续倒塌性能研究[J].工程力学，2019,36(1):216-226,237.
[9] 杜轲，滕楠，燕登，等.楼板对RC空间框架结构抗连续倒塌性能影响试验研究[J].土木工程学报，2019,52(6):14-23.
[10] 王伟，王俊杰.大型钢-混凝土组合楼盖系统的连续倒塌试验与失效机理研究[J].建筑结构学报，2021,42(5):82-91.
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[20] 张惊宙，李国强，冯然，等.考虑边柱失效位置和根数影响的钢框架结构抗倒塌性能研究[J].土木工程学报，2021,54(8):67-74.
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[25] 王景玄，杨永，沈亚军.钢管混凝土组合框架-填充墙结构抗连续倒塌分析[J].郑州大学学报(工学版),2021,42(2):19-24.
Study on mechanism of anti-progressive collapse of full-height infill-wall reinforced concrete frames under different failure conditions
Abstract: In order to study the effect of failure conditions on the anti-progressive collapse of full-height infill-wall reinforced concrete(RC) frame structures, based on the finite element software ABAQUS, a fine finite element model for the analysis of anti-progressive collapse of full-height infill-wall RC frames under different failure conditions was established, the suitable intrinsic structure model was selected, and compared with the existing experimental results, which verified the rationality of the modeling method and the selection of principal structure relationship. On this basis, the whole process load-displacement relationship of full-height infill-wall RC frame structure with different failure conditions to anti-progressive collapse, the overall damage mode of specimens, and the local damage mode of infill-wall were analyzed by comparing. The results show that the peak load of full-height infill-wall RC frame under the failure condition of center column is the greatest, while the second-highest under the failure condition of the second side column, and the the lowest under the failure condition of the side column; the frame beam connected to failed column is damaged under the strong restraint effect of full-height infill-wall RC frame boundary, but the adjacent column is not damaged, and the infill-wall will form bracing effect, while under the weak restraint effect both frame beam and adjacent column of specimen will be damaged, and under the direct action on one side of boundary, the damage will be transmitted to the adjacent span with boundary restraint side.
Keywords: reinforced concrete frame; infill-wall; progressive collapse; numerical simulation; failure condition
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