隔震支座对超长结构温度作用的影响分析  

Impact analysis of isolation support on temperature effect of ultra-long structure

作　　者：王健 WANG Jian(China Railway Shidai Architectural Design Institute Co.,Ltd.,Wuhu 241000,Anhui,China)

机构地区：[1]中铁时代建筑设计院有限公司,安徽芜湖241000

出　　处：《工程建设》2023年第11期30-34,共5页Engineering Construction

摘　　要：为研究隔震支座对结构温度作用的影响,本文以某高铁站房工程为例,通过建立普通抗震结构模型和隔震结构模型,分析结构在温度作用下的变形和应力特性,计算超长隔震结构的温度缝最大间距。结果表明:1)随着结构长度的增加,结构约束度不断累积,在温度作用下,混凝土拉应力随约束度累加而变大,直至超出材料受拉强度极限而出现裂缝;2)由于隔震支座削弱了地基对结构的约束,相比抗震结构,隔震结构具有更好的抵抗温度作用能力。本文研究成果可为类似工程提供设计参考。In order to research the effect of isolation support on structure temperature action,a high-speed rail station building project is taken as an example,the deformation and stress characteristics of the structure under the temperature action are analyzed by establishing a general seismic structure model and an isolation structure model,and the maximum temperature slit spacing of the ultra-long isolation structure is calculated.The results show that:1)With the increase of the structure length,the structural constraint degree continues to accumulate,and under the action of temperature,the tensile stress of concrete increases with the accumulation of the constraint degree,until cracks appear beyond the tensile strength limit of the material;2)Because the isolation support weakens the constraint of the foundation on the structure,the isolation structure has better temperature resistance than the seismic structure.The results can provide references for similar projects.

关 键 词：隔震 温度作用 温度缝间距 

分 类 号：TU93[建筑科学—结构工程]