防灾减灾工程学报2017，Vol.37Issue(4)：665-674,10.DOI:10.13409/j.cnki.jdpme.2017.04.023
侧向冲击荷载作用下钢骨混凝土柱抗冲击性能研究
Study on the Impact Resistance of Steel Reinforced Concrete Columns under Lateral Impact Loads
摘要
Abstract
To study the impact resistance of steel reinforced concrete (SRC) columns under lateral impact loads,the work establishes a numerical model for the impact analysis of SRC columns based on the nonlinear finite element code of MSC.MARC.The drop hammer experiments on the CFST columns and RC columns are simulated by the model which confirms that the impact resistance can be accurately predicted.Based on this model,the impact resistance of SRC under lateral impact is investigated.Subsequently,the effect of the various factors,i.e.the mass,height and position of the impact,axial compression ratio,the strength of rebar and H-shaped steel,the strength of concrete on the impact resistance of SRC is studied.Finally,the impact resistance of RC columns,SRC columns and the CFST column with double H-shaped steel are compared and analyzed.The results show that the factors discussed in the work have some influence on the peak value,stability value,duration and deflection of SRC columns,and can provide the basis for the analysis of impact resistance of other members.With the same size and experiment conditions,the impact resistance of SRC columns is better than RC columns,but worse than the CFST column with double H-shaped steel.关键词
钢骨混凝土/抗冲击性能/侧向冲击/数值分析Key words
steel reinforced concrete/impact resistance/lateral impact/numerical analysis分类
建筑与水利引用本文复制引用
朱翔,曹瑞东,康婷婷,陆新征..侧向冲击荷载作用下钢骨混凝土柱抗冲击性能研究[J].防灾减灾工程学报,2017,37(4):665-674,10.基金项目
国家自然科学基金面上项目(51578274)、清华大学自主研究项目(2012TH Z06)资助 （51578274）
