无梁楼盖地库防连续倒塌探讨

Discussion on prevention of progressive collapse of flat plat floor basement

地库坍塌事故向结构工程师敲响了警钟:地库无梁楼盖结构防连续倒塌已刻不容缓。本文依据无梁楼盖结构的特点,分析提出了防连续倒塌的结构措施;参照两本国家标准,针对破坏的两个阶段分别按悬索和吊环考虑,得出了完全相同的计算公式。对两个不同无梁楼盖结构实例按该公式进行了计算,得到了与实际表现完全一致的结果。本文给出的无梁楼盖结构防连续倒塌验算方法与构造措施可在这类结构工程设计中参考应用。

Structural engineers should take the basement collapse accident as a warning:it is urgent to prevent the progressive collapse of the flat plat floor structure of the basement.In light of the characteristics of flat plat floor structure,this paper analyzes structural measures to prevent progressive collapse.Based on the two national standards,this paper obtains the same calculation formula according to the two stages of suspension cable and sling ring failure.By using this formula to calculate two different flat plat floor structures,this paper concludes that the results are completely consistent with the actual performance.In the engineering design of this kind of structure,the checking calculation method and structural measures for preventing progressive collapse of flat plat floor structures proposed in this paper can be used as a reference.