不同拧紧扭矩对扣件抗滑移影响试验分析研究  

Different Tightening Torque Effect on Fasteners Slip Resistance Test Analysis

作　　者：何夕平[1] 朱正权[1] 邵传林 陈燕[1] 

机构地区：[1]安徽建筑大学土木工程学院,合肥230022 [2]中国十七冶集团有限公司,安徽马鞍山243001

出　　处：《合肥学院学报（自然科学版）》2015年第3期57-60,共4页Journal of Hefei University :Natural Sciences

基　　金：安徽省教育厅振兴计划课题(2013zdjy121);安徽省教育厅质量工程项目(2014gxk063);满堂扣件式钢管脚手架安全预警监控系统研究课题(2013-6-8)资助

摘　　要：在施工现场随机选取10组新旧直角扣件,在不同拧紧扭矩作用下进行扣件连接节点的抗滑移破坏试验;通过试验得出新旧扣件在荷载较小时抗滑移影响不大,荷载较大时新扣件明显优于旧扣件;在拧紧扭矩小于等于30N·m时,在极限荷载作用下扣件发生滑移破坏,在拧紧扭矩超过30N·m时,扣件发生开裂破坏;同时由试验知并不是扭矩越大越好,最后提出三点建议供工程应用参考.Selected ten group of old and new right-angle fasteners randomly in the construction site, carried out the experiment of the connecting nodes of the fasteners resistance to sliding failure, it is concluded that old and new fasteners have little anti-slip under small load, and new fastener are superior to the old fastener under large load; when tightening torque less than or equal to 30 N·m, under the ultimate load, fasteners are sliding failure, the tightening torque above 30 N m, fasteners are cracking failure; at the same time we known that it＇s not better when the torque is bigger by the experiment, finally put forward three suggestions as application for engineering.

关 键 词：拧紧扭矩 扣件 抗滑移 试验分析 

分 类 号：TU745.9[建筑科学—建筑技术科学]