摘要
以云南新庄特大桥为研究对象,基于频响函数模式置信准则的模型修正理论,以梁段刚度为损伤识别参数,运用有限元软件对该桥上部结构不同损伤工况进行模拟分析。分析结果表明,该方法可以准确识别出上部结构的刚度。并测试了该桥在施工过程中的振动响应,对上部结构施工质量采用上述方法进行评价。测试结果表明,上部已施工梁段刚度均优于设计值,施工质量良好。分析结果可为新庄特大桥的施工管理提供依据,并为同类桥梁的施工质量评估提供参考。
Taking Xinzhuang Bridge of Yunnan as a study object, according to the model modification theory based on confidence criterion of frequency response function mode and taking the girder rigidity as the parameters of damage identification, the finite element software is used to simulate and analyze the different damage conditions of this bridge superstructure. The analysis result shows that this method can accurately identify the rigidity of the superstructure, and test the vibration response of this bridge in the construction.The above method is used to assess the construction quality of the superstructure. The test result shows that the rigidity of the constructed upper girder is superior to the design value and the construction quality is good.The analysis result can provide the basis for the construction management of Xinzhuang Bridge and can be referred for the construction quality assessment of the similar bridges.
作者
郝旅飞
邱尤宝
王江博
Hao Lvfei;Qiu Youbao;Wang Jiangbo
出处
《城市道桥与防洪》
2019年第9期139-143,M0015,共6页
Urban Roads Bridges & Flood Control
关键词
连续刚构桥
施工质量
模型修正
动力评估
continuous rigid-frame bridge
construction quality
model modification dynamic assessment
