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乌龙江大桥是主孔跨径为144m,全长548m的T型刚构梁桥。文章介绍乌龙江大桥相应的病害及相应的加固措施,进行了该桥加固后的环境振动测试和模态识别,并利用实测动力特性对该桥的ANSYS有限元模型修正,并结合加固前的实测挠度和加固后有限元计算挠度对加固效果进行评价。结果表明:经加固,乌龙江大桥的使用性能和承载能力都得到了很大提高,同时也提高了其荷载等级。
Wulong River Bridge is the main hole span of 144m, a total length of 548m of T-beam bridge. The article introduces the corresponding diseases and the corresponding reinforcement measures of Wulong River Bridge, carries out environmental vibration test and modal identification of the bridge after the reinforcement, and modifies the ANSYS finite element model of the bridge by using measured dynamic characteristics, The measured deflection and the calculated finite element deflection after reinforcement are used to evaluate the reinforcement effect. The results show that, after being reinforced, the serviceability and carrying capacity of Wulong River Bridge have been greatly improved, and the load level of Wulong River Bridge has also been improved.