扣条式屋面围护系统加固前后抗风揭性能分析及试验研究  

ANALYSIS AND EXPERIMENTAL RESEARCH ON WIND-UPLIFT RESISTANCE OF BUCKLED ROOF ENCLOSURE SYSTEM BEFORE AND AFTER REINFORCEMENT

作　　者：詹淑文 蔡锐 ZHAN Shuwen;CAI Rui(Yangjiang Nuclear Power Co.,Ltd.,Yangjiang 529599,China)

机构地区：[1]阳江核电有限公司,广东阳江529599

出　　处：《工业建筑》2021年第12期90-95,122,共7页Industrial Construction

摘　　要：在对扣条式金属屋面板基本特点进行分析的基础上,对其抗风性能薄弱环节进行了理论分析判断,指出了其薄弱环节是板刚度过小且扣合方式冗余度不足,对其原型板系统进行的抗风揭试验研究表明系统发生破坏时板跨中变形过大且初始破坏发生在扣合位置;根据抗风薄弱环节分析及原型板系统破坏特征,对加固后的板系统抗风揭能力进行了试验研究,并与加固前的原型系统抗风揭能力进行了对比。试验结果表明采用波谷通长压条和短压条的方案分别可以在原系统基础上提升139%、121%的静态抗风能力;基于理论分析和抗风揭试验结果,提出了对该类板型的适用范围、加固优化措施建议。Based on the analysis of the basic characteristics of the buckled metal roof panel, the weak points of its wind-uplift resistance were theoretically analyzed. It was pointed out that the weak link was that the stiffness of metal plate was insufficient and the redundancy of fastening method was insufficient. Wind-uplift test on its prototype plate system showed that mid-span deformations of the plate were too large when the system was damaged and the initial damage occured at the fastening position. According to the analysis of the weak points of wind-uplift resistance and the failure characteristics of the prototype plate system, the wind-uplift resistance of the strengthened plate system was tested. Comparing with the wind-uplift resistance capacity of the prototype system before reinforcement, the results of series tests showed that the static wind-uplift resistance capacity could be increased by 139% and 121% by using the long and short trough-pass beads respectively. Based on the theoretical analysis and test results, suggestions on application scope and reinforcement optimization measures of this type of plate were put forward.

关 键 词：金属围护系统 扣条式金属屋面板 抗风揭试验 金属围护屋面加固 

分 类 号：TU312.1[建筑科学—结构工程]