摘要
通过某工程实例,对在役大六角高强螺栓连接副现场扭矩复验结果进行了理论分析,找出了高强螺栓预拉力损失的主要原因:一是现场扭矩检测时间过早,导致预拉力损失不稳定,前期损失较多;二是使用中维护不够.为减少高强螺栓预拉应变松弛和预拉应力损失对结构的不利影响,给出了延迟现场扭矩检测的时间区间和正确维护的方法.
Having analyzed the check result of the torsional moment on the scene of the big hexangular highstength bolts conjuncted in the service based on the engineering example,the paper gives two reseans about the lose of pretension：the earlier checking of the moment and the inaccurate maintenance method. For reducing the disadvantageous influence of the the relaxation of strain and the lose of pretension on the structure, the time span of delaying scene torsional moment checx and accurate maintence method are given.
出处
《南昌大学学报（工科版）》
CAS
2007年第3期287-290,共4页
Journal of Nanchang University(Engineering & Technology)
基金
江西省科技攻关资助项目(Z2253)
关键词
大六角高强螺栓
现场扭矩
预拉应力
high-strength bolts
torsion moment on the scene
pretension
