摘要
铁路混凝土桥梁人行道上的U型螺栓,在使用一段时期后容易出现断裂病害.结合桥梁—人行道系统的现场振动测试和螺栓试样断口分析结果,指出既有桥上发生的U型螺栓破断属于疲劳破坏,并提出了改进意见.
The U-shaped bolts embedded in concrete beam are split after using a period of time. Some in-site vibrating test and metal fracture analysis have been done to reveal that the crack of the U-shaped bolts is fatigue failure and some reference for designer is put forward.
出处
《兰州交通大学学报》
CAS
2004年第3期114-116,共3页
Journal of Lanzhou Jiaotong University
关键词
U型螺栓
断口分析
振动测试
疲劳破坏
U-shaped bolt
fracture analysis
vibrating test
fatigue destroy
