考虑填充墙平面内外相互作用评估RC框架-填充墙结构抗整体性倒塌能力

发布时间：2018-08-19 20:23

【摘要】：首先简要阐述了可模拟填充墙平面内外相互作用的纤维离散化梁-柱单元模型。其次,基于Open Sees分析软件,对某倒塌试验的4层钢筋混凝土框架-填充墙结构进行了数值模拟,数值模拟结果与试验结果的对比表明考虑平面内外相互作用的纤维离散化梁-柱单元模型模拟框架-填充墙结构中的填充墙是有效的。最后,基于校准后的数值分析模型,利用Open Sees分析软件对某钢筋混凝土框架-填充墙结构教学楼,区分考虑和不考虑填充墙平面内外相互作用两种情况,分别建立三维空间模型,进行了静力推覆分析和增量动力分析,进而利用24条地震动记录输入下的增量动力分析结果,给出了具有50%倒塌概率的结构抗整体性倒塌能力。分析结果对比表明不考虑填充墙平面内外相互作用会明显低估结构的抗倒塌能力。
[Abstract]:Firstly, the fiber discretization beam-column element model which can simulate the in-plane and in-plane interaction of filled walls is briefly described. Secondly, based on the Open Sees analysis software, a numerical simulation of a four-story reinforced concrete frame-filled wall structure is carried out. The comparison between the numerical simulation results and the experimental results shows that the fiber discretized beam-column element model is effective to simulate the infilled wall in the frame-filled wall structure. Finally, based on the calibrated numerical analysis model, a reinforced concrete frame-filled wall teaching building is analyzed by using Open Sees software. Three dimensional spatial models were established respectively, static force nappe analysis and incremental dynamic analysis were carried out, and the overall collapse resistance of structures with 50% probability of collapse was given by using the incremental dynamic analysis results of 24 ground motion records. The comparison of the results shows that the anti-collapse ability of the structure is obviously underestimated without considering the interaction between the plane and the outside of the infilled wall.
【作者单位】：兰州理工大学甘肃省土木工程防灾减灾重点实验室;兰州理工大学防震减灾研究所;
【基金】：国家自然科学基金项目(51268036) 甘肃省科技支撑计划项目(1204FKCA126)
【分类号】：TU398.2;TU312.3

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