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新型单边全螺栓连接螺栓抗拉承载力影响因素研究*
李望芝,何明胜,贺泽锋,刘礼
摘 要

(石河子大学水利建筑工程学院, 石河子 832003)

[摘要]新型单边全螺栓梁柱节点连接方式能够方便地将方形钢管柱与H型钢梁进行连接,其连接方式的不同也决定了其抗拉承载力的影响因素的不同。为了研究矩形钢管柱与H型钢梁采用新型单边全螺栓连接对螺栓极限抗拉承载力的影响,对15组方钢管试件进行螺栓群单向拉伸试验,并对贴板厚度、连接螺栓个数、管壁强度以及方钢管截面尺寸等影响因素进行了分析,为研究影响螺栓抗拉承载力的因素提供了可靠的试验理论依据。研究结果表明:管壁和贴板强度对螺栓抗拉极限承载力影响最大,贴板厚度影响相对较小,单个螺栓极限抗拉承载力将随着连接螺栓数增多而有所下降。

[关键词]新型单边全螺栓; 极限抗拉承载力; 贴板厚度; 螺栓个数; 管壁强度; 截面尺寸

中图分类号:TU391文献标识码:A文章编号:1002-848X(2017)06-0029-06

 

Research on influence factors for tensile bearing capacity of bolt adopted new single-side full bolt connection

Li Wangzhi, He Mingsheng, He Zefeng, Liu Li

(College of Water Conservancy&Architectural Engineering, Shihezi University, Shihezi 832003, China)

Abstract:It is convenient to connect the square steel column and the H-shape steel beam with new single-side full bolt joints. The different connection type decides the different influence factor for the tensile bearing capacity of bolts. In order to study the influence of the connection type above on the ultimate tensile bearing capacity of bolt, uniaxial tensile test of bolt group was carried out for fifteen square steel tubular specimens. Influencing factors were analyzed including flitch thickness, connection bolt number, tube wall strength and section size of square steel tube, which put forward a reliable experimental theory basis for studying the influence factors of the ultimate tensile bearing capacity of the bolt. Results show that the strength of the tube wall and flitch has the greatest impact on the ultimate tensile bearing capacity of the bolt, the impact of flitch thickness is relatively smaller, and the ultimate tensile strength of a single bolt decreases with the increase of the number of bolts.

Keywords:new single-side full bolt; ultimate tensile bearing capacity; flitch thickness; bolt number; tube wall strength; section size

 

*国家自然科学基金资助项目(51368052)。

 

作者简介:李望芝,硕士研究生, Email:13029617796@163.com。

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