考虑现浇楼板影响的砖砌墙体抗震性能研究  

Seismic performance of brick masonry walls considering the influence of cast-in-situ floor slabs

作　　者：张倚天 解圆聪[2] 张望喜 何超[2] 岳风华 陈乐球 易伟建 ZHANG Yitian;XIE Yuancong;ZHANG Wangxi;HE Chao;YUE Fenghua;CHEN Leqiu;YI Weijian(Hunan Construction Investment Group,Changsha 410029,Hunan,P.R.China;College of Civil Engineering,Hunan University,Hunan University,Changsha 410082,Hunan,P.R.China;Key Lab on Diagnosis for Engineering Structures of Hunan Province,Hunan University,Changsha 410082,Hunan,P.R.China;PetroChina Hunan Marketing Company,Changsha,Hunan 410005,P.R.China)

机构地区：[1]湖南建设投资集团有限责任公司,长沙410029 [2]湖南大学土木工程学院,长沙410082 [3]湖南大学工程结构损伤诊断湖南省重点实验室,长沙410082 [4]中国石油天然气股份有限公司湖南销售分公司,长沙410005

出　　处：《重庆大学学报》2023年第4期64-77,共14页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(52078201)。

摘　　要：基于ABAQUS建立砌体墙片有限元模型,与选取的试验墙片结果进行对比,验证有限元模拟的可信度;再利用有限元模型分别研究现浇楼板、砂浆强度、圈梁截面尺寸、墙顶竖向压应力、开洞率和墙片高宽比对砌体墙片抗震性能的影响。结果表明,现浇楼板、构造柱和圈梁共同构成整体,加强了对墙片的约束,减轻了墙片的损伤;提高砂浆强度等级,墙片的承载力和延性将增大;适当的圈梁截面尺寸能有效减轻墙片的破坏程度;适当的墙顶竖向压应力能显著降低墙片的破坏程度;墙片开洞会降低其承载力和位移延性;增大墙片的高宽比,墙片的承载力将减小,且墙片主要破坏形式从剪切型破坏转化成弯曲型破坏。With the help of finite element software ABAQUS,the numerical analysis results of the finite element model of the masonry walls were compared with the experimental results to verify the reliability of the finite element simulation.Based on this,the effects of the cast-in-situ floor slabs,the strength of mortar,the crosssectional dimension of ring beams,the vertical compressive stress on the top of walls,and the opening and aspect ratios of walls on the seismic performance of masonry walls were investigated.The results show that the cast-insitu slabs,the constructional columns and ring beams form a complete structure,strengthening the constraint on the wall sheet and reducing the damage.The bearing capacity and ductility of walls increase with the increase of mortar strength.Appropriate cross-sectional dimension of ring beam and vertical compressive stress on the top of walls can effectively reduce the damage of masonry walls.The bearing capacity and displacement ductility of walls decrease with the opening of walls.The bearing capacity of walls decreases with the increase of the aspect ratio of walls.At the same time,the main failure mode of walls changes from shearing failure to bending failure.

关 键 词：结构工程 现浇楼板 有限元分析 砌体结构 抗震性能 

分 类 号：TU362[建筑科学—结构工程]