CAP1000超长筏基“三合一”技术研究及应用  

Research and Application of“Three-in-one”Technology of Ultra-long Raft Base in CAP1000

作　　者：董卫红 徐威 刘优生 薛仟 张涛 DONG Weihong;XU Wei;LIU Yousheng;XUE Qian;ZHANG Tao(China Nuclear Industry 22nd Construction Co.,Ltd.,Wuhan,Hubei 430050,China)

机构地区：[1]中国核工业第二二建设有限公司,湖北武汉430050

出　　处：《施工技术(中英文)》2025年第7期106-111,共6页Construction Technology

基　　金：中国核工业第二二建设有限公司科研课题:CAP1000堆型混凝土质量提升。

摘　　要：基于三门二期核电项目,结合CAP堆型特点首次提出超长筏基“三合一”技术,设计CR10下部临时支撑系统,实现以支撑系统为受力主体进行CR10整体浇筑前提前就位,筏基与外基础A层一体浇筑,取消中心十六边形凹槽,减小应力集中。实践表明,采用该技术可显著提高工程质量、改善项目施工环境、减少人力投入、加快施工进度,同时采用无线测量装置能保证测量精度。对温度和应变监测数据分析发现,“三合一”技术可以有效减少甚至消除混凝土的有害裂缝,进一步证明了该技术可大大提高大体积混凝土基础筏板无缝整体浇筑施工质量。Based on the Sanmen Nuclear Power Plant Project(Phase II)in Zhejiang Province and combined with the characteristics of CAP reactor type,the“three-in-one”technology of super-long raft foundation is proposed for the first time.And the temporary support system under CR10 was designed to realize the pre-positioning of CR10 integral pouring with the support system as the main body of force.The raft foundation and the outer foundation A-layer were poured together,and the central hexagon groove was cancelled to reduce the stress concentration.The practice shows that this technology can significantly improve the project quality,improve the project construction environment,reduce the manpower input,and speed up the construction progress.Meanwhile,the use of wireless measurement devices can ensure the measurement accuracy.Through the analysis of temperature and strain monitoring data,it is found that the“three-in-one”technology can effectively reduce or even eliminate the harmful cracks in concrete,which further proves that this technology can greatly improve the construction quality of seamless pouring of mass concrete foundation raft.

关 键 词：核电站 筏基 混凝土 应变 监测 

分 类 号：TU753[建筑科学—建筑技术科学]