[1]郝际平,刘 斌,邵大余,等.冷弯薄壁型钢结构体系中自攻螺钉连接的抗剪性能试验研究[J].西安建筑科技大学学报:自然科学版,2014,46(06):769-773,779.[doi:10.15986/j.1006-7930.2014.06.001]
 HAO Jiping,LIU Bin,SHAO Dayu,et al.Experimental study on shear behavior of screw connections in cold-formed thin-wall steel structures[J].J.Xi’an Univ. of Arch. & Tech.:Natural Science Edition,2014,46(06):769-773,779.[doi:10.15986/j.1006-7930.2014.06.001]
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冷弯薄壁型钢结构体系中自攻螺钉连接的抗剪性能试验研究()
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西安建筑科技大学学报:自然科学版[ISSN:1006-7930/CN:61-1295/TU]

卷:
46
期数:
2014年06期
页码:
769-773,779
栏目:
出版日期:
2014-12-31

文章信息/Info

Title:
Experimental study on shear behavior of screw connections in cold-formed thin-wall steel structures
文章编号:
1006-7930(2014)06-0769-05
作者:
郝际平1刘 斌1邵大余1王奕钧1李科龙1李月晨2
(1. 西安建筑科技大学土木工程学院,陕西 西安 710055;2. 陕西省建筑设计研究院有限责任公司,陕西 西安 710018)
Author(s):
HAO Jiping1 LIU Bin1 SHAO Dayu1 WANG Yijun1 LI Kelong1 LI Yuechen2
(1 School of Civil Engineering, Xi’an Univ. of Arch. & Tech., Xi’an 710055, China; 2. Shaanxi Architectural Design & Research Institute Co., Ltd., Xi’an 710018, China)
关键词:
冷弯薄壁型钢螺钉连接抗剪性能试验研究受剪承载力
Keywords:
cold-formed thin-wall steel screw connections the shear behavior experimental study the shear capacity
分类号:
TU392.1;TU317.1
DOI:
10.15986/j.1006-7930.2014.06.001
文献标志码:
A
摘要:
为了研究钢板与钢板、钢板与定向刨花板(OSB 板)以及钢板与硅酸钙板(CSB)之间(自钻)自攻螺钉连接的抗剪性能,对32 个螺钉连接试件进行了试验研究,研究了螺钉连接试件的受力过程和受力模式,分析了钢板厚度、板材受拉纤维方向的差异、加载速度以及螺钉至板材边缘距离等参数对试件受剪承载力的影响.试验结果表明:钢板与钢板连接的破坏形态为螺钉孔处钢板局部承压和螺钉头被剪断;钢板与OSB 板连接最终发生自攻螺钉的过度倾斜和OSB 板端部的劈裂分层;钢板与CSB 板连接的破坏模式为自攻螺钉处CSB 板被净截面拉断.随着钢板厚度以及螺钉至板材边缘距离的增加,自攻螺钉连接的受剪承载力有所提高;随着加载速度的增加,钢板与钢板连接以及钢板与CSB 板连接试件的受剪承载力略有增加,钢板与OSB 板连接试件的受剪承载能力出现一定降低.OSB 板与CSB 板的方向性导致纵向纤维受拉试件的受剪承载力明显高于横向纤维受拉试件.
Abstract:
In order to investigate the shear behavior of the screw connections between steel and steel, oriented strand boards (OSB) or calcium silicate boards (CSB), a total of 32 specimens of screw connections were tested. The loading process and failure modes were analyzed. The factors such as steel plate thickness, the direction of tension fiber, loading rate and the distance between the center of the screw and the adjacent edge of the sheathing, which influence the shear capacity, were researched. The results indicate that the failure modes of connections between steel and steel are the local compression of screw holes and the shear fracture of screw heads. Screw connections between steel and OSB sheathings happened to the inclination of screws severely and the splitting of the edge of sheathings. The damage phenomena of screw connections between steel and CSB sheathings are the tensile failure of the net section of CSB sheathing on the location of the screw. With the increase of steel plate thickness and the distance between the center of the screw and the adjacent edge of the sheathing, screw connections have larger shear capacity. With the increase of the loading rate, the shear capacity of screw connections between steel and steel or CSB sheathings could be strengthened, but screw connections between steel and OSB sheathings have lower shear strength. Owing to the direction of tension fiber of OSB and CSB sheathings, the perpendicular-to-grain loaded connections may give lower shear capacity compared with the parallel-to-grain loaded connections.

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备注/Memo

备注/Memo:
收稿日期:2014-02-26 修改稿日期:2014-11-26
基金项目:陕西省“13115”科技创新工程重大科技专项项目(2009ZDKG-66);住房和城乡建设部科学技术项目(2012-K2-17);国家自然科学基金青年项目(51408461)
作者简介:郝际平(1959-),男,工学博士,教授,博士生导师,主要从事结构力学与结构工程研究.E-mail: haojiping@xauat.edu.cn
更新日期/Last Update: 2015-09-01