高强度螺栓的安全度──防止九江长江大桥高强度螺栓延迟断裂的建议

Reliability of High-Strength Bolts Proposal for Avoiding Delayed Fracture of High-Strength Bolts Used in Jiujiang Changjiang River Bridge

介绍了螺栓的形位公差与延迟断裂的关系，九江长江大桥试制螺栓的综合机械性能测试结果，Ｋｗｓｃｃ值的高低对螺栓延迟断裂的影响；提出了防止九江长江大桥高强度螺栓发生延迟断裂的建议。

Relationship of form and position tolerance of high-strength bolts to delayed fracture of the bolts,test results of mechanical properties of the bolts to be used for the Jiujiang Changjiang River Bridge and influednce of Kwscc values upon the delayed fracture of the bolts are introduced, and proposal is also made for avoiding the delayed fracture of the bolts used in the bridge.