再生混凝土梁抗弯承载力公式研究  

Fitting of the ultimate flexural formula of recycled concrete beam

作　　者：闫国新[1,2,3] 吴伟 周宜红[3] YAN Guoxin;WU Wei;ZHOU Yihong(Yellow River Conservancy Technical Institute,Kaifeng 475004,China;Small Watershed Water Conservancy Engineering Technology Center of Colleges and Universities in Henan Province,Kaifeng 475004,China;China Three Gorges University,Yichang 443002,China)

机构地区：[1]黄河水利职业技术学院,河南开封475004 [2]小流域水利河南省高校工程技术研究中心,河南开封475004 [3]三峡大学,湖北宜昌443002

出　　处：《混凝土》2019年第11期19-22,共4页Concrete

基　　金：国家自然科学基金项目（51479103）

摘　　要：统计了国内外72根普通和再生混凝土梁受弯试验数据,分析了影响再生混凝土梁抗弯承载力的因素,并结合规范GB 50010-2010建立了再生混凝土梁抗弯承载力计算公式模型。再生混凝土梁抗弯承载力比普通混凝土梁略低,并随着再生混凝土骨料取代率的增大而略有降低。工程设计中,要控制再生混凝土骨料取代率50%以内,建议取再生混凝土梁抗弯折减系数为0.90。Through the analysis of 72 test data,the influence of recycled concrete beam flexural bearing capacity factors are given.Combined with GB 50010-2002,flexural bearing capacity formula of recycled concrete beam is fitted out.Recycled concrete beam flexural strength is slightly lower than ordinary concrete beam,and with the recycled concrete aggregate replacement ratio increased.In engineering design,the recycled concrete aggregate replacement ratio should be controlled.

关 键 词：再生混凝土 抗弯承载力 再生骨料率 抗弯承载力公式 

分 类 号：TU528.01[建筑科学—建筑技术科学]