高延性混凝土条带法加固砖砌墙体抗震性能数值模拟  

Numerical Simulation of Seismic Performance of Brick Walls Reinforced by High Ductility Concrete Strip Method

作　　者：朱振北 夏海余 彭春阳 ZHU Zhenbei;XIA Haiyu;PENG Chunyang(China Construction Sixth Engineering Bureau Corp.,Ltd,Tianjin 300171,China)

机构地区：[1]中国建筑第六工程局有限公司,天津300171

出　　处：《粉煤灰综合利用》2024年第6期120-123,148,共5页Fly Ash Comprehensive Utilization

摘　　要：为提升砖砌墙体抗震性能,保证墙体的安全,提出高延性混凝土条带法加固砖砌墙体抗震性能数值模拟方法。采用AAC砌块、钢筋和混凝土制备试件,选择粉煤灰、水泥、砂以及PVA纤维等材料制备高延性混凝土,采用横向、纵向以及交叉条带加固砖砌墙体试件。利用有限元软件模拟加固和未加固试件的抗震性能。结果表明:加固后试件具有良好的抗震性能,试件承受载荷范围在305.3~-302.7 kN之间;条带加固能够显著延缓砖砌墙体的刚度退化,开裂载荷和峰值载荷最高值分别达到419.2和511.06 kN。To improve the seismic performance of brick walls and ensure their safety,a numerical simulation method for strengthening the seismic performance of brick walls using high ductility concrete strip method is proposed.Specimens were prepared using AAC blocks,steel bars and concrete;Select materials such as fly ash,cement,sand,and PVA fibers to prepare high ductility concrete,and reinforce brick wall specimens with horizontal,vertical,and intersecting strips.Simulate the seismic performance of reinforced and unreinforced specimens using finite element software.The results show that the reinforced specimens have good seismic performance,with a load range of 305.3~-302.7 kN;Strip reinforcement can significantly delay the stiffness degradation of brick walls,with the highest cracking load and peak load reaching 419.2 and 511.06 kN,respectively.

关 键 词：高延性 混凝土 条带法加固 砖砌墙体 抗震性能 数值模拟 

分 类 号：TU362[建筑科学—结构工程]