曲线桥同步顶升位移监测与分析

Monitoring and Analysis of Synchronous Lifting Displacement of Curved Bridge

为实现精细化施工,基于桥梁同步顶升理论,提出了平曲线桥顶升施工监测全过程一体化控制体系,解决了大吨位曲线桥顶升同步性较差的问题。在阐明平曲线桥顶升位移原理的基础上,制订了切实可行的预警方案,重点分析了顶升中桥梁及地基受力变化,明确了监测重点。将监测结果与理论分析相验证,进一步揭示了平曲线桥顶升过程中梁体的应力及位移变化。

In order to achieve refined construction,based on the theory of synchronous lifting of bridges,an integrated control system for the entire process of monitoring the construction of flat curved bridges is proposed,which solves the problem of poor synchronization of large tonnage curved bridges.On the basis of clarifying the principle of the lifting displacement of the flat curve bridge,a practical early warning plan is formulated,and the stress changes of the bridge and the foundation during the lifting are analyzed,and the focus of monitoring is clarified.The monitoring results are verified with the theoretical analysis,which further reveals the changes in the stress and displacement of the beam during the lifting process of the flat curve bridge.