中南大学学报（自然科学版）2013，Vol.44Issue(7)：2997-3005,9.
冷弯薄壁型钢自攻螺钉连接抗剪性能试验研究
Experimental investigation on shear-bearing capacity for self-drilling screw connections of cold-formed thin-walled steel
摘要
Abstract
The production of specimens,loading equipment and the whole test process of both single and multiple self-drilling screw connections were introduced.According to the test and failure phenomenon,the load-deformation curves,shear-carrying capacity and failure modes were testified.The feasibility and reliability of the calculating methods in GB 50018-2002 and AISI were verified by the experiment data.Through considering the influence of different base materials,screws numbers,arrangements and screw spacing,the loading stages,main failure mode and influencing factors of the test are concluded:(1) Screw numbers and spacing are the main factors to the bearing capacity of self-drilling screws connections; (2) The screw arrangements have little effect on the shearing behavior of connections;(3) In certain situations,the thickness of base metal is also one of the main factors to the shearing behavior of connections.Based on the statistical analysis of the test data,it is found that the shear-carrying capacity of self-drilling screw connections has "group reduction effect",and the range of efficiency coefficient for screws is provided as well.The screw numbers and spacing are also proved as main factors to efficiency coefficient by further analysis,关键词
冷弯薄壁型钢/自攻螺钉/连接件/抗剪承载力/试验研究Key words
cold-formed thin-walled steel/ self-drilling screw/ connection/ shear-bearing capacity/ experimental investigation分类
建筑与水利引用本文复制引用
卢林枫,张亚平,方文琦,杨东华..冷弯薄壁型钢自攻螺钉连接抗剪性能试验研究[J].中南大学学报（自然科学版）,2013,44(7):2997-3005,9.基金项目
陕西省自然科学基金资助项目(2007E225) （2007E225）
中央高校基本科研专项基金项目(CHD2009JC008,CHD2012TD012) （CHD2009JC008,CHD2012TD012）
长安大学基础研究支持计划专项基金项目(2009) （2009）
长安大学交通行业重点实验室开放基金项目(2009) （2009）
