低强度砂浆灌孔砌块砌体抗压性能试验研究  

EXPERIMENTAL RESEARCH ON COMPRESSIVE BEHAVIORS OF GROUTED BLOCK MASONRY WITH LOW-STRENGTH MORTAR

作　　者：黄靓[1] 王辉[1] 陈胜云 

机构地区：[1]湖南大学土木工程学院,长沙410082 [2]金地集团华南区域地产公司,深圳518048

出　　处：《工程力学》2012年第10期157-161,共5页Engineering Mechanics

基　　金：建设部建标[2007]125号国家标准GB50003<砌体结构设计规范>;国家985工程项目(521805020003);国家自然科学基金项目(50808074)

摘　　要：为了研究低强度砂浆对灌孔砌块砌体抗压性能的影响,该文通过9个采用石灰砂浆砌筑的灌孔砌块砌体的抗压试验,对其抗压破坏形态、开裂荷载、极限荷载及变形能力进行了分析,提出了适用于砂浆强度很低的灌孔砌块砌体的抗压强度计算公式。分析表明:低强度砂浆砌块砌体的初裂荷载与极限荷载之比较小,而开裂荷载过低将会对砌体房屋的耐久性产生不利影响,因此,该文认为在进行灌孔砌块砌体的设计和施工时,砂浆的强度应得到保证,不能过低。In order to study the effect of mortar strength on compressive behaviors of grouted concrete masonry,nine specimens using lime mortar were analyzed.According to failure pattern,cracking load,ultimate capacity and deformation capacity,a formula was provided to calculate the compressive capacity of grouted concrete masonry when the mortar strength is very low.The ratio of cracking load to ultimate load is very small,which affects the durability of masonry building.Therefore,this paper states that the mortar strength should be higher than a critical value when designing and constructing grouted concrete masonry.

关 键 词：灌孔砌块砌体 N式砌块 抗压性能 石灰砂浆 破坏形态 

分 类 号：TU522.3[建筑科学—建筑技术科学]