HPFL加固不同轴压比RC剪力墙抗震性能研究  

Study on seismic performance of RC shear wall structure strengthened with HPFL under different axial compression ratio

作　　者：蒋隆敏[1] 朱杰 刘超[1] 肖梁杰 JIANG Longmin;ZHU Jie;LIU Chao;XIAO Liangjie(School of Civil Engineering,Hunan University of Technology,Zhuzhou 412007,China)

机构地区：[1]湖南工业大学土木工程学院,湖南株洲412007

出　　处：《合肥工业大学学报（自然科学版）》2018年第6期822-827,共6页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(51741804);湖南省自然科学基金株洲联合基金资助项目(2016JJ5037);2016年度湖南省大学生研究性学习和创新性实验计划资助项目(982)

摘　　要：高性能水泥复合砂浆钢筋网薄层(high performance ferrocement laminate,HPFL)加固法是一种用钢筋网增强的高性能复合砂浆薄层材料加固结构的新方法。剪力墙抗震性能的重要影响因素之一是轴压比,文章通过3个缩尺比例为1∶2的一字形钢筋混凝土剪力墙试验模型的拟静力试验和有限元数值模拟分析,研究了在不同轴压比下经HPFL加固后的剪力墙的抗震性能,包括加固墙的抗震承载力、延性、耗能能力、裂缝开展模式等的改善情况。研究结果表明,加固墙比非加固墙的抗震承载力有明显改善,加固墙的开裂荷载及水平极限承载力都有大幅提高,延性及耗能能力随着轴压比增大而减小。The high performance ferrocement laminate（HPFL）which uses steel fabric to reinforce high performance composite mortar is a new reinforcement method.The axial compression ratio is one of the most important factors that affect the seismic performance of shear walls.Based on the quasi-static test and finite element analysis of three 1∶2 scaled models of RC shear wall with rectangular section,the seismic performance of HPFL reinforced shear wall under different axial compression ratio is studied,including the improvement of seismic capacity,ductility,energy dissipation capacity and crack development mode of the reinforced wall.The result shows that the reinforced wall has better seismic capacity than the non-reinforced wall.The cracking load and horizontal ultimate bearing capacity of the reinforced wall are greatly improved.The ductility and energy dissipation capacity decrease with the increase of the axial compression ratio.

关 键 词：高性能水泥复合砂浆钢筋网薄层(HPFL)加固 轴压比 RC剪力墙 抗震性能 有限元分析 

分 类 号：TU375[建筑科学—结构工程]