机制砂再生粗骨料混凝土配筋柱大偏心受压裂缝控制试验研究  

Experimental Study and Calculation of Large Eccentric Compression Crack Control for Reinforced Manufactured Sand and Recycled Coarse Aggregate Concrete Columns

作　　者：李凤兰[1] 毋欢欢 苏延峰[1] 杨亚彬[1] 

机构地区：[1]华北水利水电大学土木与交通学院,河南郑州450045

出　　处：《华北水利水电大学学报（自然科学版）》2015年第6期27-31,共5页Journal of North China University of Water Resources and Electric Power：Natural Science Edition

基　　金：河南省教育厅科学技术研究重点项目资助计划(13A560701);河南省新型城镇建筑技术协同创新中心项目(教科技[2013]638号)

摘　　要：为深入研究机制砂再生粗骨料混凝土结构的性能,本研究进行了12根机制砂再生粗骨料混凝土配筋柱的大偏心受压性能试验,研究了长细比和初始偏心距变化对配筋柱在大偏心轴向压力作用下的正截面抗裂度、裂缝分布和裂缝宽度的影响规律,并通过与现行规范相应计算公式的计算结果对比,分析了机制砂再生粗骨料混凝土配筋柱的大偏心受压裂缝的特性,给出了正截面抗裂度和裂缝宽度的计算建议.To thoroughly research the structural behaviors of concrete mixed with manufactured sand and recycled coarse aggregate（ MSRCAC）,some tests were carried out on 12 reinforced MSRCAC columns under large eccentric compression. The effects of the ratio of length to cross-sectional height and the initial eccentric distance on the cross-sectional cracking resistance,crack distribution and crack width of reinforced MSRCAC columns under large eccentric compressive force were studied. By the comparative analyses with the calculation results with formulas in current design code,the large eccentric compressive characteristics of reinforced MSRCAC columns are discussed,and the suggestions for calculating cross-sectional cracking resistance and crack width are proposed.

关 键 词：机制砂再生粗骨料混凝土 配筋柱 大偏心受压 裂缝控制 抗裂度 裂缝宽度 裂缝分布 

分 类 号：TU528[建筑科学—建筑技术科学] TV332[水利工程—水工结构工程]