文章摘要
引用本文:孙 潮,陈宝春.钢筋混凝土面层加固石砌体轴心受压构件材料强度利用系数和可靠度分析[J].福州大学学报(自然科学版),2013,41(6):1104~1109
钢筋混凝土面层加固石砌体轴心受压构件材料强度利用系数和可靠度分析
Analysis of strength utilization factor of material and reliability for stone masonry member strengthening with reinforced concrete layer under centric compress load
  
DOI:10.7631/issn.1000-2243.2013.06.1104
中文关键词: 钢筋混凝土加固  石砌体  轴心受压  强度利用系数  可靠度
英文关键词: reinforced concrete  strengthening  stone masonry  centric compress load  strength utilization factor  reliability
基金项目:
作者单位
孙 潮 福州大学土木工程学院福建 福州 350116 
陈宝春 福州大学土木工程学院福建 福州 350116 
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中文摘要:
      钢筋混凝土面层加固石砌体形成的组合结构轴心受压构件属二次受力结构,面层的混凝土和钢筋强度不能得到充分利用,为此,在极限承载力计算中,引入小于1.0的材料利用系数来考虑这一影响,然而现行规范中未给出该系数取值. 根据石砌体、混凝土和钢筋的本构关系研究的成果和变形协调条件,分析了钢筋混凝土面层加固石砌体轴心受压构件混凝土和钢筋的材料强度利用系数. 根据分析结果并结合相关规范,建议混凝土和钢筋的材料强度利用系数均取0.8. 基于《建筑结构可靠度设计统一标准》(GB 50068-2001),利用一次二阶矩法(JC法)进行了钢筋混凝土面层加固石砌体轴心受压构件可靠度分析,分析结果表明满足现行规范要求.
英文摘要:
      Stone masonry member strengthening with reinforced concrete layer is initially loaded member and strength of concrete and reinforcement in the reinforced concrete layer can not be used fully that is considered by strength utilization factor of material which is smaller than one in calculation of the ultimate load-carrying capacity,but this factor is not provided in current code. Strength utilization factor of material for concrete and reinforcement is analyzed by the study results of constitutive relations of stone masonry,concrete and reinforcement and the deformation compatibility condition. The value 0.8 for this factor is proposed based on the results of analysis and the related codes. The second moment of first order method (JC method) recommended in Unified Standard for Reliability Design of Building Structures (GB 50068-2001) is applied to analyze the reliability of this member. The results meet with the requirement of current code.
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