基于MIDAS的大体积混凝土桩承台温度场有限元分析  

作　　者：余建杰[1,2] 宋固全[1] 吴浪[3] 

机构地区：[1]南昌大学建筑工程学院,330031 [2]南昌航空大学土建学院,330063 [3]江西科技师范学院建筑工程学院,南昌330038

出　　处：《混凝土与水泥制品》2012年第5期34-37,共4页China Concrete and Cement Products

摘　　要：以南昌某高层建筑的大体积混凝土桩承台为例,考虑冷却水管作用,采用MIDAS有限元分析软件对施工期大体积混凝土的水化热温度场进行模拟研究。研究结果表明,桩承台中间布置两排冷却管,水管间距取1.0m,保持1.2m3/h水流量的管冷方案能够保证各控制点内外结构温差不超过25℃,有效控制了温度裂缝,使施工质量得到保证。Considering the roles of cooling water pipes,hydration heat temperature fields on mass concrete of a pile cap of high-rise buildings in Nanchang during the construction are simulated and studied using the MIDAS finite element analysis software.The results indicate that the pipe cooling scheme（pile caps with two-row cooling pipes,1.0m space between pipes,1.2m3/h water flow）can ensure that the temperature differences between internal and external structure of pile caps is no more than 25℃,which can effectively prevent the temperature cracks and guarantee the construction quality.

关 键 词：大体积混凝土 温度裂缝 冷却水管 有限元分析 

分 类 号：TU525[建筑科学—建筑技术科学]