建筑结构学报2017，Vol.38Issue(10)：68-77,10.DOI:10.14006/j.jzjgxb.2017.10.008
半刚接钢框架内填钢筋混凝土剪力墙结构超强系数的概率法研究
Overstrength analysis of partially-restrained steel frame with RC infill walls based on probability approach
摘要
Abstract
The randomness of material property and component dimension has significant influence on the overstrength factor of partially-restrained steel frame with RC infill walls (PSFRCW).The Latin-hyper cubic sampling approach was adopted to take into account the randomness of material property and component dimension,including mechanical property of steel,steel bar and concrete,thickness of RC infill wall,rotation stiffness and bending bearing capacity of partially-restrained connection.A total of 160 PSFRCW specimens with four groups were designed according to the GB 50011-2010'Code for seismic design of buildings',and the effect of story number and seismic precautionary intensity were also considered.The capacity curves of 160 PSFRCW structures were developed by pushover analysis under the two lateral loading distribution modes,i.e.,uniform lateral loading distribution and generalized power loading distribution modes.The analytical results show that the overstrength factor of PSFRCW considering material property and component dimension randomness is 15％ larger than the nominal values of PSFRCW structure.The overstrength factor determined by generalized power loading distribution mode,which considered the effect of higher modes,is less than the overstrength factor values from uniform lateral loading distribution mode.At the same seismic precautionary intensity,the overstrength factor of PSFRCW takes on the increasing tendency with the increase of story number.With the same story number,the overstrength factor of PSFRCW exhibits the decreasing tendency with the increase of seismic precautionary intensity.The suggested overstrength factor of PSFRCW is 3.5 and 3.2 for seismic zone 8 and 9,respectively.关键词
半刚接钢框架/内填RC墙/材料性能/几何尺寸/概率方法/超强系数/随机性Key words
partially-restrained steel frame/RC infill wall/material property/dimension/probability method/overstrength factor/randomness分类
建筑与水利引用本文复制引用
孙国华,李坤明,方有珍,王跃..半刚接钢框架内填钢筋混凝土剪力墙结构超强系数的概率法研究[J].建筑结构学报,2017,38(10):68-77,10.基金项目
国家自然科学基金项目(51108292),江苏省“青蓝工程”中青年学术带头人项目,江苏省研究生培养创新工程项目(KYLX_1287,SJLX15_0638). （51108292）
