预制轻混凝土墙板轴心受压性能试验研究  

EXPERIMENTAL RESEARCH ON MECHANICAL PROPERTIES OF PRECAST LIGHT CONCRETE WALLBOARD UNDER AXIAL COMPRESSION

作　　者：董晶 范力[2] DONG Jing;FAN Li(Ningde Normal University,Ningde 352100,China;Jiangsu Key Laboratory Environ mental Impact and StructuralSafety in Engineering,China University of Mining and Technology ,Xuzhou 221116,China)

机构地区：[1]宁德师范学院,福建宁德352100 [2]中国矿业大学江苏省土木工程环境灾变与结构可靠性重点实验室,江苏徐州221116

出　　处：《工业建筑》2019年第3期86-91,共6页Industrial Construction

基　　金：福建省教育厅中青年项目(JAT170660);宁德师范学院青年教师专项课题(2018Q116)

摘　　要：为研究约束墙板结构体系中承重预制轻混凝土墙板的竖向承载能力,设计了不同厚度和不同高厚比的预制墙板试件,并进行竖向轴心荷载作用下的抗压试验。试验结果表明:带孔墙板的破坏模式不同于砌体墙和实心墙,且根据墙板承载力换算得到的截面抗压强度大于开孔试块的试验抗压强度;轴心荷载作用下墙板破坏形态主要有两类,当试件高厚比小于14时,试件破坏形态主要是劈裂破坏;当高厚比大于17. 5时,试件发生平面外失稳破坏,承载力随着高厚比的增加而降低。在试验研究的基础上,建立了墙板在轴心荷载作用下的竖向承载力计算式。In order to test the vertical bearing capacity of precast light concrete wallboard in a constraint wallboard structure system , the mechanical properties of precast wallboard with different thickness and different ratios of height to thickness were tested under the action of vertical loads. The results showed that the failure mode of wallboard with openings was different from that of masonry structures and solid wall, and its section compressive strength was greater than the hollow block of compressive strength test;the failure modes of wallboard under the action of vertical loads might be divided into two types: 1 ) when the ratio of height to thickness was less than 14, its failure mode was mainly compressive destruction;2) when the ratio of height to thickness was greater than 17. 5 , its failure mode was out-ofplane instability destruction, and the vertical bearing capacity decreased with the increase of the ratio of height to thickness. To this end , based on the test and theoretical analysis, the calculation formula of vertical bearing capacity for the precast light concrete wallboard under axial compression was put forward.

关 键 词：预制轻混凝土墙板 承重墙板 竖向承载力 承载力计算公式 

分 类 号：TU528.72[建筑科学—建筑技术科学]