剪-压复合作用下铺浆砌筑石墙灰缝抗剪性能试验研究  

EXPERIMENTAL RESEARCH ON SHEAR BEHAVIOR OF STONE MASONRY JOINT UNDER SHEAR AND COMPRESSION LOADING

作　　者：柴振岭[1] 郭子雄[1] 胡奕东[1] 李钢[2] 伊廷华[2] 

机构地区：[1]华侨大学土木工程学院,福建泉州362021 [2]大连理工大学建设工程学部,辽宁大连116024

出　　处：《工业建筑》2011年第9期63-66,共4页Industrial Construction

基　　金：国家十一五科技支撑计划项目(2006BAJ06B03);福建省自然科学基金项目(E0810021);厦门市科技计划项目(3502Z20093029)

摘　　要：条石砌筑石墙灰缝抗剪性能的研究是了解石结构抗震性能的关键。通过对12片有垫片铺浆砌筑石墙通缝抗剪性能的试验,以研究在剪-压复合作用下砂浆强度和压应力水平对铺浆砌筑石墙灰缝抗剪性能的影响,分析有垫片铺浆砌筑石墙灰缝破坏过程、抗剪强度和变形性能。试验结果表明:有垫片砌筑石墙的灰缝破坏主要包括前期弹性变形阶段和后期的摩擦滑移阶段;提高砂浆强度和压应力水平均能够有效改善灰缝抗剪性能和提高抗剪强度,其中,压应力的影响更为显著。最后,通过数学回归统计,提出剪-压复合作用下有垫片铺浆砌筑石墙灰缝抗剪强度计算公式。计算值与试验结果吻合良好。The reasearch on shear behavior of stone masonry joint is a key factor to understand the seismic behavior of stone masonry structures. Twelve stone masonry specimens constructed by paving mortar were tested under shear and compression load to investigate the shear behavior of mortar joint. The main influence parameters were mortar strength in mortar joint and vertical compressive stress under morar joint . The failure process, shear strength and deformation of stone masonry mortar joint in mortar joint analyzed. Test results indicated that the failure process of stone masonry constructed by paving mortar mainly contains elastic - plastic deformation and frictional sliding phases, and that the shear strength of mortar joint is improved with increasing the mortar strength and vertical compressive stress. Finally, by means of a regression analysis, a formula was proposed to calculate the shear strength of stone masonry joints. The calculated results by proposed formula were in good agreement with the test results.

关 键 词：石墙 剪-压复合作用 铺浆砌筑 灰缝 抗剪性能 

分 类 号：TU363[建筑科学—结构工程] TU317