机制砂再生粗骨料混凝土配筋柱偏心受压承载力的计算方法  

Calculation Method of Ultimate Resistance of Reinforced MSRAC Columns under Eccentric Compression

作　　者：李凤兰[1] 任访春 苏延峰[1] 杨亚彬[1] 

机构地区：[1]华北水利水电大学,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5期39-43,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(教科技[2013]638号)

摘　　要：介绍了机制砂再生粗骨料混凝土配筋柱的小偏心和大偏心受压承载力试验成果,分析了长细比和初始偏心距分别对配筋柱正截面应变分布、混凝土和钢筋应变、侧向挠度、破坏形态、极限承载力等的影响规律.通过与现行规范相应计算公式的计算结果对比,基于混凝土材料性能与结构受力的相关机理,系统分析了机制砂再生粗骨料混凝土配筋柱偏心受压承载力的主控因素,并对偏心受压承载力的计算提出了建议.The experimental results of ultimate resistance of the reinforced MSRCAC（ concrete mixed with manufactured sand and recycled coarse aggregate） columns under small and large eccentric compression are introduced,and the effects of the slenderness ratio and the initial eccentric distance on the cross-sectional strain distribution,concrete and reinforcement strains,transversal deflection,failure states and ultimate resistance of reinforced MSRCAC columns are studied. By the comparative analyses with the calculation results and formulas in current design code,and based on the related mechanism between the material properties of concrete and the loading behaviors of structure,the main control factors influencing the ultimate resistance of reinforced MSRCAC columns under eccentric compression are discussed. At last,the calculation suggestions for eccentric-compressive ultimate resistance of reinforced MSRCAC columns are proposed.

关 键 词：机制砂再生粗骨料混凝土 配筋柱 小偏心受压 大偏心受压 长细比 初始偏心距 承载力 

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]