黄咏政, 王森钠, 梁子晗, 尹续峰, 李易. 常规混凝土框剪结构连续倒塌动力响应分析[J]. 工程力学, 2023, 40(S): 227-233. DOI: 10.6052/j.issn.1000-4750.2022.05.S003
引用本文: 黄咏政, 王森钠, 梁子晗, 尹续峰, 李易. 常规混凝土框剪结构连续倒塌动力响应分析[J]. 工程力学, 2023, 40(S): 227-233. DOI: 10.6052/j.issn.1000-4750.2022.05.S003
HUANG Yong-zheng, WANG Sen-na, LIANG Zi-han, YIN Xu-feng, LI Yi. DYNAMIC PROGRESSIVE COLLAPSE RESPONSES OF TYPICAL RC FRAME-SHEAR WALL STRUCTURES[J]. Engineering Mechanics, 2023, 40(S): 227-233. DOI: 10.6052/j.issn.1000-4750.2022.05.S003
Citation: HUANG Yong-zheng, WANG Sen-na, LIANG Zi-han, YIN Xu-feng, LI Yi. DYNAMIC PROGRESSIVE COLLAPSE RESPONSES OF TYPICAL RC FRAME-SHEAR WALL STRUCTURES[J]. Engineering Mechanics, 2023, 40(S): 227-233. DOI: 10.6052/j.issn.1000-4750.2022.05.S003

常规混凝土框剪结构连续倒塌动力响应分析

DYNAMIC PROGRESSIVE COLLAPSE RESPONSES OF TYPICAL RC FRAME-SHEAR WALL STRUCTURES

  • 摘要: 多高层办公建筑主要采用混凝土框剪结构,其在局部结构构件失效下的整体结构连续倒塌可能引发严重的经济损失和社会影响。该文针对常规结构布置的典型框剪结构开展了动力连续倒塌分析,总结其规律为结构毁伤下的连续倒塌快速评估提供依据。主要工作包括:按照不同抗震设防烈度、跨度、层数设计了18个典型结构布置的框剪结构,并采用纤维梁单元和分层壳单元建立了整体结构的数值模型库;采用非线性动力拆除构件法对整体结构开展了计算分析,获得结构系统在局部构件失效下的动力响应;对比分析不同结构的连续倒塌动力响应,研究不同参数对连续倒塌后果的影响。

     

    Abstract: High-rise office buildings mainly adopt frame-shear wall structures. The whole structure may collapse progressively triggered by initial failure of critical structural element(s), eventually resulting in serious economic losses and social impact. Dynamic progressive collapse analysis was conducted on typical reinforced concrete (RC) frame-shear wall structures and the collapse mechanism was summarized, which provided a basis for rapid assessment for the progressive collapse of RC frame-shear wall structures. The research included the following works: Eighteen typical RC frame-shear structures were designed in accordance with different seismic fortification intensities, span lengths and number of stories. The numerical models of the structures were established in which fiber beam elements and multilayer shell elements were used to simulate RC beams and columns and RC shear walls, respectively. The nonlinear dynamic analysis using nonlinear dynamic alternate path method was conducted on the typical RC frame-shear wall structures, and the dynamic responses of the structures triggered by initial local failures were obtained. The dynamic responses of structural progressive collapse varying with different key parameters were compared and analyzed, by which the influence of different structural parameters on the dynamic progressive collapse responses was studied.

     

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