梁板式地下室顶板经济性分析

Economic analysis of beam slab basement roof

以某实际项目为例,对梁板式地下室顶板的经济性进行研究分析。研究发现,小柱网5.4 m×(4.9 m+6.5 m)的条件下,负一层(平时工况和消防车工况)和负二层人防工况下,由于地下室顶板嵌固端及结构自防水对最小板厚的限制要求,大板结构形式经济性较为明显;负二层平时工况下,由于没有最小板厚的条件限制,单次梁结构形式的经济性较为明显。通过研究,对小柱网条件下梁板式地下室顶板进行优化设计,可以为类似工程项目提供参考。

Taking an actual project as an example,the economy of beam-slab basement roof was studied and analyzed.It is found that under the condition of 5.4 m×(4.9 m+6.5 m)of the small pillar network,under the condition of negative first floor(normal working condition and fire truck working condition)and negative second floor civil air defense working,the economy of large panel structure is obvious due to the requirement of plate thickness of embedded end of basement roof and self-waterproofing of structure;under the normal working condition of negative second floor,the economy of single beam structure is more obvious due to the absence of minimum plate thickness.Through the research,optimization design of beam-slab basement roof under the condition of small column net were carried out,which can provide reference for similar projects.