Abstract：The nonlinear time history analyses of reinforced concrete frame structures under 128 seismic waves were carried out by using the OpenSees software.The effects of the steel yield strength, elastic modulus, steel structure quality, damping ratio, compressive strength of concrete，concrete elasticity modulus and intensity of ground motions were considered.Besides the above random variables, the influences of the yield strength and elastic modulus of the section steel were also considered.4 kinds of seismic demands for 2 kinds of frame structures were obtained respectively, namely, the top displacement, base shear, maximum floor acceleration and maximum interlayer displacement angle.The sensitivity ranking of each random variable was achieved, making use of two analysis methods, the local sensitivity analysis and global sensitivity analysis for the reinforced concrete frame structures.The results by the two methods were compared, and the random variables of significant influence and the random variables of smaller influence were found by both of the methods.The calculation and analysis results may be helpful for improving the calculation efficiency of the sensitivity analysis of seismic demands, in frame structure design.
王秀振，钱永久. 框架结构地震需求敏感性分析[J]. 振动与冲击, 2018, 37(22): 104-110.
WANG Xiuzhen，QIAN Yongjiu. Sensitivity analysis of the seismic demands of frame structures. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(22): 104-110.
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