摘要
RC框架结构中填充墙与周边构件的相互作用,使延性抗震设计理念较难实现,而开洞填充墙使框架结构构件受力变得更为复杂,该影响在设计中应得以体现。根据已完成的试验,利用有限元软件建立了模型,通过改变墙框材料强度比、门洞位置、窗洞尺寸等参数进行了非线性分析,并分析了在多种因素变化下开洞填充墙对结构的影响。研究结果表明,填充墙压杆作用在墙框材料强度比高时更明显;改变墙的厚度对开窗洞填充墙框架结构承载力的影响较明显;洞口在墙中部时,结构承载力高;开洞的面积与压杆作用成反比;随填充墙高宽比增大,结构承载力减小。
Ductility design concepts are hard to actualize in RC frames due to the interaction between infilled wall and surrounding members.Infills with openings cause more complicated stress in RC frame members,which should be reflected in the design.In this study,the finite element model of frames with infills are built on the basis of the completed tests.Impact of infills with openings on the seismic performance of RC frame structure are investigated through non-linear analysis of such parameters as material strength ratio of infills to frames,location of door openings,size of the window openings and other parameters.The results indicate that infilled wall performs obvious strut effects when the material strength ratio of infills to frames is high.More obvious effect on the carrying capacities of RC frames can be observed due to infills thickness changing.Higher carrying capacity can be acquired when the openings are in the center of the infills.The area of openings is inversely proportional to the role of strut.As the height-width ratio of infills increases,carrying capacity of the structure will decrease.
作者
陈深
宁宁
张纪刚
王建亮
李阳
丁月
CHEN Shen;NING Ning;ZHANG Jigang;WANG Jianliang;LI Yang;DING Yue(School of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China;Qingdao Civil Engineering Construction Engineering Testing and Appraisal Co.Ltd.,Qingdao 266000,China)
出处
《青岛理工大学学报》
CAS
2023年第4期91-100,共10页
Journal of Qingdao University of Technology
基金
国家自然科学基金-山东省联合基金资助项目(U2106222)。
关键词
RC框架
洞口
门洞
窗洞
抗震性能
有限元分析
RC frames
openings
door openings
window openings
seismic behavior
finite element analysis
