悬浇施工监控计算易发问题研究

Study on the Common Mistakes During Supervision Calculation for Cantilever-casting Construction

根据成熟的实践积累,结合某主跨88m连续梁桥挂篮悬臂浇筑施工监控,初步探讨悬浇施工控制计算易发问题,对易发问题和解决问题的方式进行明确,包括墩梁临时刚接模拟,模拟实际施工工况,成桥预拱度计算和设置,预应力参数k,μ参考取值等。根据理论分析与现场实践表明理论值与实测值基本吻合,且主桥自然合龙。

Based on the experience accumulated main-span continuous girder bridge using hangin and combined with the construction monitoring of a 88m g basket cantilever pouring method, this paper discussed the common problems occurred during the control calculation, and proposed solutions for these problems. They include temporary rigid-connection simulation of the piles, simulation of the actual construction conditions, calculation and setting of the bridge pre-arch, reference values for prestressed parameters κ,μ, etc. The theoretical analysis and field practice show that the calculation results matched the site monitoring very well, and the main bridge jointed naturally.