摘要
为研究填充墙体对钢框架抗地表变形性能的影响,针对开放式、封闭式和内嵌墙板3类钢框架,分别进行地表不均匀沉降作用的物理试验,对柱顶侧移、梁柱应变等响应规律展开分析研究,得出底梁和内嵌墙板对框架性能的影响规律及内嵌墙板-底梁-钢框架的协同工作性能。结果表明:开放式框架构件变形最大,封闭式框架次之,内嵌墙板框架最小,而框架整体倾斜变形的顺序则恰好相反;框架梁柱构件各部位变形对柱顶侧移贡献大小顺序为柱底>柱顶>梁边柱端>梁中柱端>梁跨中;框架柱底增设底梁,能一定程度地减小框架构件变形量,但同时其框架整体倾斜变形增大,并不能有效降低框架柱顶侧移的增大速率;内嵌墙板能较大幅度改变框架梁柱内力分布,并有效降低框架柱顶侧移的增大速率。
In order to research the influence of infilled wall to the steel frame performance of anti-ground deformation,the column-topswing and beam-column-strain were analyzed via the physical experiment for three types of frame( open-frame,close-frame and wallboard-infilled-frame) under differential settling. The effection of frame performance by sill beam and infilled wallboard,furthermore,the cooperation of infilled wallboard-sill beam-steel frame were analyzed. The results showed that the member distortion of open-frame was maximum,close-frame took second place,and the member distortion of wallboard-infilled-frame was minimal,by contrast,the measure sequence of integral-incline of the frames was just reverse. The measure sequence caused the column-top-swing by different position of beam-column members was column base > column top > girder side-column-end > girder middle-column-end > girder midspan. The sill beam added to the bottom of frame-column could decrease amount of deformation of framing members,but the integral-incline of the frames increased at the same time,therefor the sill beam could not reduce the gathering speed of frame-column-top-swing. The infilled wallboard could modify the distribution of internal force on frame girder and column obviously and reduce the gathering speed of framecolumn-top-wing effectively.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2015年第2期57-63,共7页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然科学基金资助项目(51274192)
江苏省土木工程环境灾变与结构可靠性重点实验室开放基金资助项目(JSKL2014K08)
关键词
钢结构
框架
内嵌墙板
地表不均匀沉降
试验
协同工作
steel structure
frames
infilled wallboard
differential settling
experiments
cooperation
