混凝土沉沙池缓黏结预应力筋设计与张拉顺序优化研究

Study on Design and Tension Sequence Optimization of Retard-Bonded Prestressed Reinforcing Steel in Concrete Sedimentation Basin

缓黏结预应力技术具有布筋灵活、施工方便的优势,在水工混凝土结构设计施工中具有良好的发展前景。文章以辽宁省锦凌水库沉沙池为例,研究了混凝土沉淀池缓黏结预应力筋设计与张拉顺序,结论显示自上而下的张拉施工顺序为最佳施工方案。结构受力分析显示,该方案安全满足施工要求。

The technique of retard-bonded prestressing technology has the advantages of flexible reinforcement arrangement and convenient construction,and it has a good prospect in the design and construction of hydraulic concrete structures.The sedimentation basin of Jinling Reservoir in Liaoning Province is adopted as an example in the paper.The design and tensioning sequence of the prestressed reinforcing steel of the retard-bonded concrete sedimentation basin are studied,and the conclusion shows that the top-down tensioning sequence is the best construction plan.The analysis of the structural stress shows that the scheme is safe,which meets the construction requirements.