中美规范核电厂混凝土安全壳设计方法和安全度对比分析  

Comparative study on design method and safety of concrete containment nuclear power plant of Chinese and American codes

作　　者：贡金鑫 凡红 万广泽 Gong Jinxin;Fan Hong;Wan Guangze(Faculty of Infrastructure Engineering,Dalian University of Technology,Dalian 116024,China;China Nuclear Power Design Co.,Ltd.,Shenzhen 518031,China)

机构地区：[1]大连理工大学建设工程学部,大连116024 [2]中广核工程设计有限公司,深圳518031

出　　处：《建筑结构》2018年第16期9-18,共10页Building Structure

摘　　要：对中国规范NB/T 20303—2014与美国规范ACI 359-13混凝土安全壳的设计方法和安全度进行了对比分析。分析表明：中国规范NB/T 20303—2014与美国规范ACI 359-13考虑的设计工况、荷载组合及荷载系数基本是相同的;中国规范NB/T 20303—2014要求验算安全壳结构施加预应力前、整体性试验和正常运行三种工况下混凝土应力的容许值,按极限状态方法计算需要的钢筋面积;美国规范ACI 359-13分别验算使用荷载组合和乘系数荷载组合下混凝土的容许正应力和容许剪应力及钢筋的容许应力和容许应变;中国规范NB/T 20012—2010钢筋混凝土径向抗剪的安全度比美国规范ACI 359-13保守,预应力混凝土抗剪的安全度与美国规范ACI 359-13的接近,外周抗剪的安全度比美国规范ACI 359-13的低,切向抗剪和抗扭切的安全度与美国规范ACI 359-13的接近。A comparative study was conducted on the design method and safety of concrete containment of nuclear power plant of Chinese code NB/T 20303—2014 and American code ACI 359-13. It is revealed that the design conditions,load combinations and load factors are basically the same in Chinese code NB/T 20303—2014 and American code ACI 359-13.In Chinese code NB/T 20303—2014,checking for the concrete stresses before prestressing,during the pressurization test and normal operation are required and quantification of reinforcements is based on limit state method. In American code ACI 359-13,checking for the admissible normal and shear stress of concrete,admissible stress and strain of steel under service and factored load combinations are specified. The radial shear capacity of the reinforced concrete in Chinese code NB/T 20303—2014 is higher than American code ACI 359-13. The shear capacity of prestressed concrete is close in both codes. The spherical shear capacity in Chinese code NB/T 20303—2014 is lower than American code ACI 359-13. The tangential and torsional shear capacity is close in both codes.

关 键 词：核电厂 安全壳 承载力 安全度 规范 对比分析 

分 类 号：TU375[建筑科学—结构工程] X946[环境科学与工程—安全科学]