摘要
为研究reinforced concrete框架结构的随机参数敏感性,结合Matlab和SAP2000对Sobol法和随机化Pushover方法进行编程,然后对一榀平面框架结构进行分析,考虑了随机化Pushover方法中水平地震影响系数最大值、混凝土抗压强度和弹性模量、钢筋屈服强度和抗拉强度以及钢筋弹性模量对顶点位移的敏感性。结果表明,水平地震影响系数最大值对随机化Pushover方法顶点位移敏感性和重要程度最大,在分析中可以忽略其余5个参数的随机性。同时通过2个算例进一步验证了研究结果在多层和高层框架结构中的适用性。
To investigate the random parameter sensitivity of reinforced concrete frame structure,Matlab and SAP2000 were used to program Sobol’method and randomized Pushover method.One plane frame structure was established to analyze the sensitivity of parameters to roof displacement.The parameters contained maximum value of horizontal earthquake influence coefficient,concrete compressive strength,elastic modulus of concrete,yield strength and tensile strength of steel bar and elastic modulus of steel bar.The results showed that the most sensitive and important parameter to roof displacement in randomized Pushover method was maximum value of horizontal earthquake influence coefficient and the randomness of remaining five parameters could be ignored in the analysis.In addition,two examples were used to verify the applicability of the findings in the multi-layer and high-rise frame structures.
作者
张望喜
杨学峰
张瑾熠
熊浩
ZHANG Wangxi;YANG Xuefeng;ZHANG Jinyi;XIONG Hao(Hunan Provincial Key Lab on Diagnosis for Engineering Structures,Hunan University,Changsha 410012,P.R.China;College of Civil Engineering,Hunan University,Changsha 410012,P.R.China;School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,Hunan,P.R.China)
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2020年第3期70-78,共9页
Journal of Chongqing University
基金
国家自然科学基金资助项目(51578228)
国家重点研发计划专项资助项目(2016YFC0701400)。
