营运期特大跨径连续刚构桥变形监测分析

依托某特大跨径连续刚构桥，对营运期间桥梁的线形、主墩的竖向位移、主墩的偏位、伸缩缝的变形进行了分析研究。首先，明确了特大跨连续刚构桥监测的内容和方法，进而用有限元软件 Midas Civil2012对桥梁变形相关理论值进行了计算。随后，现场实测了桥梁变形相关的数据。最后，将现场桥梁线形、主墩的竖向位移、主墩的偏位、伸缩缝变形的实测值与理论计算值进行了对比分析，得出本桥基本处于正常的工作状态这一结论。通过对特大跨径桥梁的分析，可为同类桥梁提供依据，具有较好的实用价值。

Deformation Monitoring Analysis on Operating Period of Large Span Continuous Rigid Frame Bridge

This paper studies the alignment of bridge,the vertical displacement of the pier,the offset of the pier and the deformation of the expansion joints based on an extra large span continuous rigid frame bridge.Firstly,the contents and methods of the extra large span continuous rigid frame bridge mo-nitoring are fixed,and then using the FEA software-Midas Civil 2012 calculates the theoretical value of the bridge deformation.Furthermore,the deformation data of the bridge is measured.Finally,the author compares and analyzes the theoretical data and practical data on alignment of bridge,the vertical dis-placement of the pier,the offset of the pier and the deformation of the expansion joints.It shows that the bridge is under normal working condition.The study of this paper provides the basis for continuous rigid bridge and it has good practical value.