高寒地区碾压混凝土坝温控防裂与蓄水计划研究  

Study on Temperature Control and Crack Prevention and Impoundment Plan of RCCD in Alpine Area

作　　者：王润英[1] 程欢欢[1] 

机构地区：[1]河海大学水利水电工程学院,南京210098

出　　处：《科学技术与工程》2013年第7期1873-1877,共5页Science Technology and Engineering

基　　金：江苏省自然科学基金(BK2010517);中央高校基本科研业务费专项资金项目(2010B02014)资助

摘　　要：针对高寒地区年均气温较低、混凝土内部散热慢、碾压混凝土坝表面容易出现裂缝的问题,分析研究了坝体开裂机理与防裂方法。研究了此类地区坝体蓄水的主要影响因素。阐述了蓄水时间、蓄水水位和施工期温控措施对蓄水的影响;并采用三维有限元方法对工程实例进行计算分析,对同类工程的施工及蓄水计划安排有一定的参考意义。In alpine area, the average annual temperature is constantly lower, and the heat dissipation process of internal concrete is slow, and the surface of RCCD is prone to crack. Aiming at this problem, crack mechanisms of the dam and crack prevention methods are analysed and summarized. The main influence factors of impoundment in these areas are studied, and effect for impoundment of storage time and level and temperature control in con- struction period are summarized. The 3-D FEM is used to stimulate the engineering examples. It can be referred by the similar projects for construction and water impoundment plan.

关 键 词：高寒地区 碾压混凝土坝 温控防裂 蓄水 

分 类 号：TV315[水利工程—水工结构工程]