地库顶板结构形式经济性对比分析

Comparative analysis on economy of basement roof structure

通过PKPM结构设计软件,对比分析了井字次梁、单向双次、单向单次、大板加腋(中部250 mm)、大板300 mm五种地库顶板结构梁板布置形式的综合造价,为同类地库选择合理的梁板布置形式提供参考依据。

Through PKPM structural design software,the paper comparatively analyzes five kinds of basement roof structure beam distribution cost of crossing-secondary beam,one-way twice,one-way once,big board with arm（250 mm of central part）,300 mm of big board,which has pro-vided some guidance for rationally selecting basement beam board distribution forms.