建筑结构学报2018，Vol.39Issue(1)：61-68,8.DOI:10.14006/j.jzjgxb.2018.01.008
钢筋混凝土框架结构底部相邻两柱失效的抗连续倒塌性能研究
Progressive collapse performance of reinforced concrete frame structures subjected to ground two-column removal scenario
摘要
Abstract
A pushdown experiment was conducted for a beam-column-slab substructure after removal of the comer and penultimate exterior columns to investigate the progressive collapse behavior of reinforced concrete structures after removal of the comer and penultimate exterior columns.A 12-point equivalent loading system,which equivalently simulated the uniformly distributed load,was used.The failure modes,load resisting capacities,deformation capacity,local strain in reinforcements,horizontal movement of supports,and torsional rotations of edge beams of the beamcolumn-slab substructures were analysed.The experimental results indicate that when both corner and penultimate exterior columns are removed,the beam-column-slab substructure performs as a cantilever slab,no reliable compressive arch action,catenary action,membrane action could be developed to prevent the occurring of progressive collapse.A numerical model was built by finite element software DIANA.It is found that the model could simulate the global behavior of the specimen well.Yield-line model is utilized to predict the yield load and first peak load of the specimen.The theoretical results indicate that the yield-line method may achieve conservative results compared to the test results.关键词
钢筋混凝土结构/多柱失效/试验研究/数值模型/连续倒塌Key words
reinforced concrete structure/multi-column loss/experimental study/numerical model/progressive collapse分类
建筑与水利引用本文复制引用
钱凯,罗达,贺盛,于晓辉..钢筋混凝土框架结构底部相邻两柱失效的抗连续倒塌性能研究[J].建筑结构学报,2018,39(1):61-68,8.基金项目
国家自然科学基金项目(51568004,51178150). （51568004,51178150）
