长洲水利枢纽厂房结构温度应力仿真分析  

Emulation Analysis on the Temperature Stress for the Powerhouse of Changzhou Hydraulic Complex

作　　者：石天庆 崔建华[2] 易祖耀 

机构地区：[1]河南省电力勘测设计院,河南郑州450007 [2]长江科学院,湖北武汉430010 [3]华电郑州机械设计研究院有限公司,河南郑州450015

出　　处：《人民黄河》2013年第3期103-104,107,共3页Yellow River

基　　金：水利部公益性行业科研专项(200901066)

摘　　要：长洲水利枢纽厂房在高温季节施工存在混凝土温控问题,为研究温控设计方案的可行性,取厂房标准结构段为研究对象,采用三维有限单元法,仿真模拟施工过程,进行了混凝土温度场及温度应力计算分析。结果表明:设置后浇带能有效减小结构应力;应对底板及后浇带中出现的较大应力引起足够重视;气温骤降对底板表面应力影响较大,应做好必要的保温工作。Concrete pouring in the powerhouse of Changzhou Hydraulic Complex must be done in hot seasons. In order to study the feasibility of the design scheme for the temperature control, taking a standard structure section as the research object, temperature field and temperature stress of the structure were calculated according to the construction scheme. The results indicate that the construction scheme of post-pouring strip can reduce the concrete stress effectively, while the larger stress in the bottom plate and post-pouring strip should be taken seriously. Also, the sudden drop in air temperature has a great effect on the concrete stress in the surface area of the bottom plate, heat preservation measures should be taken when it occurs.

关 键 词：温度应力 仿真计算 混凝土施工 温控措施 长洲水利枢纽 

分 类 号：TV731[水利工程—水利水电工程]