岭澳二期核岛土建筏基大体积混凝土施工管理

Construction management for mass concrete raft foundation of Ling-ao phase Ⅱnuclear power station project

岭澳二期核岛土建3、4号机组筏基工程,筏基厚度约3 m和5.5 m,混凝土总量约12 000 m3,属于大体积混凝土施工范围.设计施工图中筏基施工工艺为分层分段浇注,一次混凝土浇注量约400 m3,3号机组筏基按施工图施工,其施工工艺与大亚湾核电站和岭澳核电站核岛土建筏基施工工艺基本一致.随着时代的进步,混凝土施工工艺不断改进,大体积混凝土施工工艺在国内大型项目中普遍应用.为在中国广东核电工程项目建设领域实现大体积混凝土的施工,岭澳二期核岛土建在4号机组筏基局部进行了改进并实施.从施工质量、施工进度、施工成本等方面与3号机组分析对比,结果表明:大体积混凝土施工在核电领域是可行有效的,对其他核电项目建设具有一定的借鉴意义.

Foundation engineering of the No.3 and No.4 units of nuclear island construction in Lin ao Phase II,of which the foundation height is about 3 m and 5.5 m,concrete total cones to about 12 000 m3;all belong to the range of mass concrete construction.In design construction shop drawing,the whole foundation decompose many pieces and layers,which number of concrete in one time is about 400m3,and the foundation construction of the No.3 unit must be constructed depend on shop drawing,this construction craftwork is...