某项目开敞地下室顶板综合应力分析

Comprehensive Stress Analysis of the Open Basement Roof of a Project

以某超限项目的四面开敞地下室为例,分析了地下室顶板在竖向荷载作用、水平地震作用和温度荷载作用下的楼板应力。根据控制工况的不同,将地下室顶板分为纯地下室中间区域、地下室与塔楼交界区域和地下室顶板与外墙交界区域。以楼板断面为研究对象,综合分析了各区域的轴向温度应力、面内弯曲应力和面外弯曲应力,对各区域的结构安全性进行了分析论证,并提出了加强措施保证地下室顶板的受力性能。

Taking the four side open basement of an out of transfinite project as an example,this paper analyzes the floor stress of the basement roof under vertical load,horizontal seismic load and temperature load.According to different control conditions,the basement roof is divided into pure basement middle area,basement and tower junction area and basement roof and exterior wall junction area.Taking the floor section as the research object,the axial temperature stress,in-plane bending stress and out of plane bending stress in each area are comprehensively analyzed,and the structural safety of each area is analyzed and demonstrated,strengthening measures are put forward to ensure the mechanical performance of basement roof.