预应力混凝土楼板改造加固实例分析

Technical Analysis of Rebuilding and Reinforcement Engineering for Prestressed Concrete Slab

无粘结预应力楼板的预应力筋一般是多跨连续布置,对预应力楼板进行改造加固时,要根据预应力的受力类型,充分考虑到预应力筋的影响。结合预应力施工工艺的特点,通过工程实例分析,讨论了预应力楼板拆除加固时设计、施工应注意的事项。对施工过程中发现的问题提出了相应的解决办法。

Prestressed tendons of unbonded prestressed concrete slab is generally a multi span continuous arrangement,should be based on the type of prestressing force to fully take into account the influence of the prestressed reinforcement.Combining with the characteristics of prestressed construction technology,through the analysis of engineering examples,this paper discusses the design and construction should be paid attention to matters in the removal and reinforcement of the prestressed concrete slab,puts forward the corresponding solutions to the problems in the process of construction.