人防地下室楼盖选型经济性分析

ECONOMIC ANALYSIS ABOUT FLOOR TYPE SELECTION OF THE CIVIL AIR DEFENSE BASEMENT

为获得十字梁楼盖、井字梁楼盖、无梁楼盖和大板主梁楼盖四种单层人防地下室结构楼盖体系的经济性,以跨度和覆土厚度作为变量,利用PKPM软件分别对四种楼盖结构体系模型在不同跨度和不同覆土厚度情况下的工程用钢量进行计算,结果表明,在进行楼盖选型时,无梁楼盖体系仅在跨度和覆土厚度均较小时优于其他三种楼盖形式,当跨度和覆土厚度都较大时,十字梁楼盖的优势较为明显,可为相关结构设计人员参考。

In order to get the economic performance of four single layer civil air defense basement structures, such as cross beam floor, wells beam floor, flat slab and large slab main beam floor, with the span and the thickness of covering soil as the variables, using the PKPM software to calculate the amount of steel used for four kinds of floor structural system models under different span and different soil thickness, the results showing that： in the selection of floor type, flat slab system is superior to the other three types of floors only when the span and the thickness of the covering soil are smaller, and the advantage of cross beam floor is better obviously when the span and the thickness of the covering soil are larger, which can be used as a reference for the structural designers.