摘要
针对开放式、封闭式以及内嵌墙板框架分别进行了曲率地表变形作用的物理试验.通过对比分析,研究曲率地表变形作用下底梁和墙板对框架性能的影响规律,结论如下:底梁与墙板增加了框架刚度,从而增大基底反力变化速率,最终沉降差减小;底梁和墙板增加了框架的整体性,构件联系的增加使内力分布更均匀,进而减小了附加应变变化速率;底梁传力效应增大了柱底附加应变变化速率;梁构件是承担曲率变形的主要构件,底梁的设置对框架梁附加应变的影响显著;墙板对构件的联系效应使其对框架柱附加应变的影响显著;由于2种曲率变形加载方向相对于初始框架受力方向存在差异,负曲率变形下底梁和墙板对框架响应影响的显著程度略高于正曲率变形作用.
For open-frame,closed-frame and infilled-wallboard-frame,the physical tests of these steel frames under positive and negative curvature surface deformations are carried out respectively.Through comparative analysis,the regular pattern of frame under curvature surface deformation effected by mudsill and infilled wallboard was researched,conclusion as follows:mudsill and infilled wallboard increased the frame stiffness,thereby,increased change rate of foundation base counterforce and decreased the ultimate differential settlement;mudsill and infilled wallboard increased the constraint and entirety of frame,increasing of frame members’relationship leaded to the distribution of internal force more symmetrical,and then,decreased the change rate of additional strains;the effect of force transmission from mudsill increased change rate of additional strain of column base;Frame girder and mudsill were the major load-bearing members under curvature surface deformation,thus,the additional strain of frame girder was impacted notably by the mudsill;the additional strain of column was impacted notably by infilled wallboard because of increasing member constraint caused by infilled wallboard;the influence that mudsill and infilled wallboard effected to structural responses under negative curvature surface deformation was more remarkable slightly than that under positive curvature ground deformation because of loading direction difference relative to initial frame’s force direction between the 2 kinds of curvature surface deformation.
作者
谢伟
夏军武
郑玉莹
王秋分
XIE Wei;XIA Junwu;ZHENG Yuying;WANG Qiufen(China University of Mining and Technology,Xuzhou,Jiangsu 221116,China;Xuhai College,China University of Mining and Technology,Xuzhou,Jiangsu 221008,China;Jiangsu Collaborative Inno- vation Center for Building Energy Saving and Construction Technology,Xuzhou,Jiangsu 221116,China)
出处
《江苏建筑职业技术学院学报》
2018年第3期1-8,共8页
Journal Of Jiangsu Vocational Institute of Architectural Technology
基金
江苏省高校自然科学研究面上项目(16KJB560021)
江苏建筑节能与建造技术协同创新中心开放基金项目(SJXTQ1617)
江苏高校"青蓝工程"资助
关键词
曲率地表变形
钢结构
框架
内嵌墙板
底梁
试验
结构响应
curvature surface deformation
steel structure
frame
infilled wallboard
mudsill
experiment
structural response
