无粘结预应力混凝土板火灾试验构件设计

The Experimental Component Design of Unbonded Prestressed Concrete Slab under Fire

首先对试验构件的截面参数、无粘结预应力筋的型号及混凝土标号进行了设计,然后分别 用荷载平衡法和规范中的公式对试验简支板构件和连续板构件中的无粘结预应力筋数量进行了 估算,接着对构件中的非预应力筋的用量也进行了估算,最后对设计的构件进行部分项目的验算, 并对两种方法进行了比较,指出了引起两者差别的原因.

The design for the experimental component firstly emphasizes the size of the cross section, the type of the prestressing wire and the grade of the concrete. Secondly, two methods are used to evaluate the quantity of prestressing wire which are needed in simple-supported slab and in continuous slabs respectively. Thirdly, the amount of reinforcing bar in simple-supported slab and in continuous slabs is also evaluated. Lastly, the checks on some critical project and the comparision between two methods adopted above are carried out, it gives the reasons that contribute to the difference between them.