条石砌体轴心受压性能试验研究  

Experimental study on performance of stone masonry walls under axial compression

作　　者：许秀林 郭子雄[1,2] 柴振岭[1,2] 叶勇[1,2] 王兰[1] 侯炜[1,2] 

机构地区：[1]华侨大学土木工程学院,福建厦门361021 [2]华侨大学福建省结构工程与防灾重点实验室,福建厦门361021

出　　处：《建筑结构学报》2017年第12期148-153,共6页Journal of Building Structures

基　　金："十二五"国家科技支撑计划(2015BAL03B03)

摘　　要：为研究条石砌体的轴心受压性能,进行了27个条石砌体试件的轴心受压试验。主要研究参数包括砂浆强度、砌体高厚比和砌筑方式(干砌甩浆和铺浆)等。通过试验分析了条石砌体在轴压力作用下的破坏特征和荷载-变形关系,研究了不同参数对条石砌体轴心受压承载力的影响。试验过程揭示条石砌体在轴压荷载作用下的破坏形态表现为水平灰缝受压破坏和条石砌块竖向折断,呈现脆性破坏特征。研究结果表明:当砌体高厚比不超过5.75时,在灰缝中配置更多垫片可提高干砌甩浆条石砌体的承载力;铺浆砌筑条石砌体的轴压刚度和承载力均高于干砌甩浆条石砌体。基于对试验结果的回归分析,提出了考虑砌体高厚比影响的干砌甩浆砌筑条石砌体轴压承载力的计算式,计算结果与试验结果吻合较好。A total of 27 wall specimens were tested under axial compression to investigate the compressive performance of stone masonry walls. The main test parameters included the strength of mortar,height-to-thickness ratio,and construction method（mortar-laid or dry-laid）. The failure mode and load-deformation relationship of the specimens were studied. The influence of different parameters on the axial compressive capacity of stone masonry walls was investigated. During testing,crush of mortar and gaskets inside the bed joints as well as split of stone blocks were observed for all specimens,and the failure exhibited brittle features. The results show that when the height-tothickness ratio is no more than 5. 75,more gaskets inside the joints can effectively increase the load carrying capacity of the dry-laid specimens. With all other parameters set as the same,the mortar-laid specimens have higher stiffness and compressive strength than the dry-laid specimens. Finally,a formula,which takes into account the influence of height-to-thickness ratio,is proposed to predict the load carrying capacity of the dry-laid stone masonry walls,and the calculated results agree well with the test results.

关 键 词：条石砌体 干砌甩浆 轴压试验 受压性能 承载力 

分 类 号：TU363[建筑科学—结构工程] TU317.1