扭矩法施工高强螺栓受力状态分析

t present, torque method is the most commonly used method in high strength bolt construction, it is cheap and is easy for construction. But as the pretension is applied by exerting torque, the torque in the bolt will induce adverse effects, such as decreasing bearing capacity of bolts, exerting inaccurate pretention, can not reuse bolts, and decreasing anti-loose ability of bolts. In this paper, the effect of torque on the bearing capacity, the accuracy of the pretension and the anti-loose ability of bolts are analyzed quantitatively by analysing the state of stress of torque method.