首页> 中文期刊> 《铁道标准设计》 >芜湖长江大桥常规检定评估试验

芜湖长江大桥常规检定评估试验

         

摘要

为判别芜湖长江大桥当前安全运营状况,2014年对芜湖长江大桥进行了第一次常规检定评估试验。试验对结构应力、挠度、支座位移、索力、横竖向振幅和自振频率等进行了测试。实测结果表明:主桁主要杆件应力、跨中挠度、支座位移等测试结果与2000年成桥试验测试结果基本一致,结构受力正常且处于弹性工作阶段。应力和挠度实测动力系数均较小,振动各项指标(横向振幅、横向自振频率、加速度)均满足《桥检规》相关要求。%The first routine evaluation test was conducted in 2014 for Wuhu Yangtze River Bridge to evaluate its safety conditions. Structural stress, deflection, bearing displacement, cable tension, vibration amplitude and frequency were tested. Test results show that the main truss’s stress, mid-span deflection, bearing displacement are basically consistent with the 2000 complete bridge experimental test results, the bridge structure is normal and at a elastic working stage. The tested dynamic coefficients of stress and deflection are both small and the vibration indicators ( transverse amplitude, horizontal amplitude, natural frequency and acceleration ) met the requirements related to bridge inspection regulations.

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