某纯地下商业超长结构楼板应力及影响研究  

Study on Floor Stress and Influence of a Pure Underground Commercial Super Long Structure

作　　者：程鹏 陈泽赳 CHENG Peng;CHEN Zejiu(East China Architectural Design&Research Institute Co.,Ltd.,Shanghai 200002,China)

机构地区：[1]华东建筑设计研究院有限公司,上海200002

出　　处：《结构工程师》2023年第4期67-73,共7页Structural Engineers

摘　　要：某大型纯地下商业项目位于成都,共五层,地下一、二层楼板大量开洞,东西向长约620 m。本文对温度荷载的取值进行了细致分析,并对结构进行了升温、降温工况下的楼板应力分析,对于应力稍大区域可用钢筋加强,对于连桥等应力较大区域可用增加型钢抵抗温度应力。采用单压弹簧模拟侧向水土压力,进行了水土压力下的楼板应力分析,发现水土压力的影响范围为5~6跨。论证了地下超长结构在楼板大量开洞情况下减少断缝的可行性、安全性及用单压弹簧模拟侧向水土压力的必要性。A large-scale pure underground commercial project is located in Chengdu,with a total of five floors.A large number of holes are opened in the floors of the first and second floors,with a length of about 620m from east to west.In this paper,the value of temperature load is carefully analyzed,and the floor stress of the structure is analyzed under the conditions of temperature rise and temperature drop.For areas with larger stress,steel bars can be used to strengthen,and for areas with larger stress,such as bridges,steel sections can be used to resist temperature stress.The single pressure spring is used to simulate the lateral water and soil pressure,and the floor stress under the water and soil pressure is analyzed.It is found that the influence range of the water and soil pressure is about 5~6 spans.This paper demonstrates the feasibility and safety of the underground super long structure in the case of a large number of openings in the floor,and the necessity of using single pressure spring to simulate the lateral water and soil pressure.

关 键 词：纯地下结构 超长结构 温度分析 水土压力 单压弹簧 

分 类 号：TU93[建筑科学—结构工程]