寒区大体积混凝土开裂的主要因素分析  

Analysis of main factors about mass concrete cracks in cold region

作　　者：叶远胜[1] 吴春雷[1] 李艳萍[1] 刘丽霞[2] 

机构地区：[1]中水东北勘测设计研究有限责任公司科学研究院,吉林长春130061 [2]公主岭市水利勘测设计处,吉林公主岭136100

出　　处：《东北水利水电》2008年第10期4-6,12,共4页Water Resources & Hydropower of Northeast China

摘　　要：本文根据白山水电站大坝挑流鼻坎裂缝现场调查及检测结果,以混凝土材料自身的变形性能为出发点,结合施工期与混凝土相关的文献资料,分析了引起寒区大体积混凝土开裂的主要因素,同时提出采用混凝土相对干缩变形值(表层混凝土干缩值与深层混凝土干缩值之差)作为混凝土抗裂性能计算基础参数的观点。Based on the field investigation and detection results of crack in dam flip bucket of the Baishan hydropower station, combining the related literature of the construction period and concrete, this paper takes the deformation performance of concrete material itself as a starting point, analyses main factors of mass concrete crack in the cold region and puts forward the viewpoint that concrete relative shrinkage deformation value (The difference of shrinkage deformation value between the surface concrete and the deep concrete) is adopted as the calculation foundation parameters of concrete crack resistance.

关 键 词：大体积混凝土 开裂 寒区 白山水电站 

分 类 号：TV544.91[水利工程—水利水电工程]