建筑钢结构进展2026，Vol.28Issue(8)：55-64,10.DOI:10.13969/j.jzgjgjz.20250108003
机械固定式单层卷材屋面系统关键连接节点抗拔性能试验研究
Experimental Study on Pull-Out Performance of Key Connection Joints in Mechanically Fixed Single-Ply Membrane Roofing Systems
摘要
Abstract
To study the pull-out performance of key connection joints in mechanically fixed single-ply membrane roofing systems which are prone to damage under the action of wind uplift,Q235 profiled steel plates with four thicknesses of 0.8,0.9,1.0,and 1.1 mm were combined with two types of long screws respectively,and static pull-out tests were carried out on twenty-four specimens in eight groups.The failure mechanism of long screw-profiled steel plate connections,the influencing factors of pull-out bearing capacity,and the applicability of the calculation formula of screw pull-out bearing capacity in Chinese and international codes were analyzed,Finally,the wind-uplift safety of a natatorium roof under different wind force levels was evaluated.The results show that when the thread width is the same,the pull-out bearing capacity of the long screw-profiled steel plate connection increases nonlinearly with the increase of the plate thickness.The increase in thread width has a more significant effect on the pull-out bearing capacity of thin plate specimens than on that of thick plate specimens.The calculation results of European standards are too conservative.For deep-thread long screw-profiled steel plate connections,the Australian standard calculation values are closest to the test values.For shallow-thread long screw-profiled steel plate connections,the calculated values of Chinese code are closest to the experimental value,while the calculation according to the Australian standard is unsafe.The natatorium roof will not suffer wind-uplift failure under wind forces of grades 0～14.When the wind force exceeds grade 14,the long screws will be pulled out,and wind-uplift failure will occur in the roofing system.关键词
机械固定/单层卷材/屋面系统/关键连接节点/抗拔承载力/抗风揭安全性评估Key words
mechanical fixation/single-ply membrane/roof system/key connection joint/pull-out bearing capacity/wind-uplift safety assessment分类
建筑与水利引用本文复制引用
郝勇,丁秋雨,武航飞,周垠,徐怀兵,周占学..机械固定式单层卷材屋面系统关键连接节点抗拔性能试验研究[J].建筑钢结构进展,2026,28(8):55-64,10.基金项目
河北建筑工程学院创新基金(XY2024015),中铁二十局集团B类科研课题(YF2002FJ01B) （XY2024015）
