苏州中心地下空间超长结构温度应力分析

Analysis of Temperature Stress on Super-length Structures in Underground Space of Suzhou Center

苏州中心建筑平面尺寸巨大,因超长产生的温度应力对结构的影响较为显著。通过分析地下结构从施工到投入正常使用全过程中可能受到的温度荷栽的类型,利用线性分布法计算作用在建筑物上温度荷栽.总结出确定温度作用的计算工况。并以苏州中心地下空间结构为例,介绍了温度应力的计算方法。实际计算表明,降温荷载在框架梁和楼板中产生较大拉应力.楼板开洞部位拉应力集中,温度作用在框架柱中产生剪力和弯矩,在工程设计时必须充分考虑。

The plane size of Suzhou Center is huge.The temperature stress due to excessive length has the obvious influence on the structures.By analyzing the possibility of temperature load on the underground structure during the whole process from construction to normal use,this paper calculates the temperature load on the buildings by the linear distributing method,and summarizes the calculation conditions for determining the temperature action.Taking the underground space structure of Suzhou Center as an example,this paper introduces the calculation method of temperature stress.The practical calculation shows that the temperature reduction load will produce the larger tensile stress in the framed girder and floor slab.The tensile stress is concentrated at the opening position of floor slab.The temperature action will produce the shearing force and bending moment in the framed column,which must be fully considered in the engineering design.