整体浇筑大体积混凝土承台的温度控制分析  

Temperature Control and Analysis of Integral Casting Mass Concrete Platform

作　　者：方贻立[1] 谢功元[1] 邹力 

机构地区：[1]湖北省交通运输厅高速公路管理局,武汉430034 [2]中铁大桥局科学研究院,武汉430034

出　　处：《交通科技》2014年第1期8-11,共4页Transportation Science & Technology

摘　　要：大体积混凝土承台整体浇筑能提高承台的整体性,但水泥的水化热反应较分层浇筑时剧烈,产生温度裂缝的概率高。文中采用有限元结构计算程序,用水化热分析模块模拟计算承台整体浇筑的过程,提出了控制混凝土内部最高温度、降低混凝土降温速率、优化边界约束等温控措施。The technology of integral casting mass concrete pile caps can improve the integrity of the pile caps, but this technology will generate more heat of hydration than layered casting. Then the probability of temperature cracks is high. The process of integral casting mass concrete is simulated by the finite element calculation program of hydration thermal analysis module in this article. And the effective control measures that controlling the highest temperature inside the concrete, reducing the cooling rate of the concrete and optimizing the boundary constraints are put forward.

关 键 词：大体积混凝土 整体浇筑 温度裂缝 温度控制 

分 类 号：U445.559[建筑科学—桥梁与隧道工程]