摘要
对已运营70余年的老龄钢桥灵桥进行了上部结构病害检测、关键节点和杆件的超声波探伤、拱圈与吊杆空间形位测量、荷载试验,再综合历年检测数据和计算模型,深入分析了灵桥的退化程度和承载能力,得出以下主要结论:在现有交通条件下,灵桥的结构状态暂时是安全的,但其病害加剧,尤其是桥面系破坏严重、拱脚严重腐蚀,致使该桥已不满足使用要求,应尽快维修或改造。
Based on a serial of tests for the Ling Bridge,which has been in service over 70 years,including structure disease detection, ultrasonic inspection of key joints and hangers,measurement of arch shape and position,load test,this paper studied the structural degeneration and load load capacity,combined with previous years' testing data and finite element model.The analysis results show that the Ling Bridge is temporarily safe under the present traffic condition,but because of the aggravation of bridge diseases,especially the seriously damage of orthotropic decks and the severely corrosion of arch feet,the risk of collapse is increasing;the Ling Bridge should be upgraded and modified soon.
出处
《上海公路》
2012年第1期28-31,35,共5页
Shanghai Highways
关键词
钢桥
荷载试验
桥梁病害
结构退化
承载能力
安全评估
steel bridge
load test
bridge disease
structureal degeneration
load capacity
safety assessment and evaluation.
