再生混凝土自保温承重砌块砌体抗压性能试验研究  

EXPERIMENTAL RESEARCH ON THE COMPRESSION PERFORMANCE OF RECYCLED CONCRETE SELF-INSULATION LOAD-BEARING BLOCK MASONRY

作　　者：刘文坤[1,2] 陈宇申 徐明[1,3] 陈忠范[1] 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096 [2]华东建筑设计研究院有限公司,上海200070 [3]上海建科院上海市工程结构新技术重点实验室,上海200032

出　　处：《工业建筑》2014年第1期84-89,共6页Industrial Construction

基　　金：国家十二五科技支撑计划项目(2011BAJ08B04);上海市工程结构新技术重点实验室开放课题(2011-KF06);国家大学生创新创业训练计划项目(1210286027)

摘　　要：再生混凝土自保温承重砌块具有经济、环保、节能、高强及隔声等优点。通过对36个再生混凝土砌块砌体进行轴心抗压试验,研究其受压破坏特征及受压性能。试验分析得出其抗压强度设计值略低于规范中混凝土多孔砖砌体的抗压强度设计值;给出了适用于再生混凝土砌块砌体的抗压强度平均值建议公式、砌体受压应力-应变曲线建议公式、弹性模量及泊松比的建议取值。此外,采用块体与砂浆分开建模的分离式模型进行砌体轴心抗压弹塑性有限元分析,结果表明,砌体轴心受压有限元模型可以较精确地模拟砌体结构的受压行为,且具有一定的分析精度。Recycled concrete self-insulation load-bearing block has the advantages of economy, environmental protection, energy saving, high strength and sound insulation. Based on 36 recycled concrete block masonries axial resisting compression tests, it was studied their compression failure characteristics and compression performance. Experimental results showed that the compressive strength of recycled block masonry was slightly lower than that of common block masonry. It was also given the suggested formula applicable to average compressive strength of recycled concrete block masonry, the suggested formula of compression stress-strain curve and the suggested values of elastic modulus and Poisson ratio. Article uses separated models of block masonry and mortar for elastic-plastic finite element analysis. The results show that the finite element model of axial compressive masonry can accurately simulate the compression behavior of masonry structures, which has a certain analytical precision.

关 键 词：再生混凝土砌块 抗压强度 应力-应变曲线 分离式模型 

分 类 号：TU522.3[建筑科学—建筑技术科学]