冷弯薄壁型钢蒙古包结构低周往复荷载试验研究  

Cyclic Test of Mongolia Yurts of Cold-formed Thin-walled Steel

作　　者：陈明 邵斐璠 CHEN Ming;SHAO Feifan(College of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)

机构地区：[1]内蒙古科技大学土木工程学院

出　　处：《太原理工大学学报》2020年第1期9-18,共10页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(51368043,51768055);内蒙古自然科学基金资助项目(2017MS(LH)0526);内蒙古科技大学优秀青年基金资助项目(2016YQL10)

摘　　要：通过对冷弯薄壁型钢蒙古包空间结构在水平低周往复荷载作用下的试验研究,得到了往复荷载下结构的滞回曲线及各关键部位的受力变形情况。分析了其承载能力、耗能能力、刚度退化、延性、破坏形式等指标,在此基础上,分析冷弯薄壁型钢蒙古包结构的受力特点以及加载平面内与平面外刚架的相互作用。结果表明:该结构具有良好的延性和耗能能力,安全储备较高;半刚性节点传力良好;加载平面内与平面外刚架具有良好的协同作用;完全由热轧钢板和高强螺栓连接的结构,可避免焊接产生的残余变形。该结构为装配式钢结构建筑,大大提高了施工效率,研究结果可为草原地区新型房屋结构和冷弯薄壁型钢房屋结构进一步的工程应用和理论研究提供参考。Mongolia yurts of cold-formed steel were tested under low-cycle reversed loading to determine their failure mode,hysteretic loops and the deformation situation of key parts of the structure.The hysteretic behavior,strength degradation,rigidity degeneration,ductility and failure modes were studied.Accordingly,in-depth analysis of stressing features and the interaction between the rigid-frames inside and outside the loading plane was made to evaluate the seismic performance of the structural system.The results show that,the new structure can provide sufficient lateral resistant ability.Semi-rigid joints show great force transmission.Synergistic effect exists between the frames inside and outside loading plane.The structure is completely connected by hot-rolled steel plates and high strength bolts,which can avoid deformation by welding.The construction is prefabricated,which can greatly improve the construction efficiency.The study provides a basis for the theoretical analysis and engineering application of the new building structure in grassland area and cold-formed thin-walled steel buildings.

关 键 词：冷弯薄壁型钢 蒙古包结构 拟静力试验 滞回性能 

分 类 号：TU391[建筑科学—结构工程]