高强钢筋自密实混凝土短肢剪力墙地震损伤模型研究  

Study on Seismic Damage Model for High Strength Reinforced Self-compacting Concrete Short-leg Shear Walls

作　　者：肖良丽[1] 蒋思杰 李瑶 雷梦琦 骆恒 刘鸿明[1] Xiao Liang-li;Jiang Si-jie;Li Yao;Lei Meng-qi;Luo Heng;Liu Hong-ming(School of Urban Construction,Wuhan University of Science and Technology,Wuhan 430070,China)

机构地区：[1]武汉科技大学城市建设学院,武汉430070

出　　处：《工程抗震与加固改造》2018年第4期21-26,共6页Earthquake Resistant Engineering and Retrofitting

摘　　要：为了探究高强钢筋自密实混凝土短肢剪力墙在水平地震作用下的损伤机理,进行了5片墙体试件的低周反复荷载试验。考虑到水平往复荷载对试件累积损伤的影响,记录了试件各损伤阶段的变形和裂缝发展,探究了轴压比、肢厚比和体积配箍率对高强钢筋自密实混凝土短肢剪力墙损伤机理的影响,提出了一种适合高强钢筋自密实混凝土短肢剪力墙的双参数地震损伤模型。对比试验结果,表明该模型与试验墙体的受力机理和破坏特征吻合较好。结合试验过程和损伤指数,给出了试验各阶段损伤指数所对应的试验现象,可为结构损伤判断提供参考。In order to explore damage mechanism of high strength reinforced self-compacting concrete short-leg shear walls under horizontal seismic action,the low reversed cyclic loading tests of five short-leg shear wall specimens are carried out.The deformation and fracture development of each damage stage are recorded,the influence of axial compression ratio,the thickness ratio and stirrup volume ratio on the damage mechanism of high-strength reinforced concrete short limb shear wall is investigated,and a dual parameter seismic damage model is proposed considering the effects of horizontal loading on cumulative damage of the specimen.The comparison test results reveals that the dual parameter seismic damage model could well reflect the stress mechanism and damage characteristics of high strength reinforced self-compacting concrete short-leg shear walls.Combining with the test process and damage index,the corresponding experimental phenomena of damage index at the different test stages are derived,providing references for structural damage assessment.

关 键 词：高强钢筋 自密实混凝土 短肢剪力墙 双参数 损伤模型 

分 类 号：TU375[建筑科学—结构工程]