摘要
剪力墙结构因其良好的抗侧力性能被广泛应用于高层建筑结构中,然而一些年代较早的建筑并未考虑抗震设计,因此对这些建筑进行加固是必要的。前期研究表明,带有钢板屈曲约束装置的螺栓钢板加固法(LRSP加固法)可有效提升既有连梁的抗震性能,但连梁延性提高后对剪力墙结构受力性能的影响尚不明确。本文基于OpenSees建立精细化模型,考察了螺栓钢板加固连梁延性后对具有不同高宽比、轴压比和配筋率的剪力墙结构受力性能影响。分析结果表明,当剪力墙结构的高宽比、轴压比和配筋率处于一定范围内时,LRSP连梁加固方法可有效提高剪力墙结构的整体抗震性能。
Reinforced concrete(RC) coupled shear wall system is a typical lateral load resisting system for high-rise buildings. But seismic design is not considered in older buildings, which makes retrofitting essential. Previous experimental studies demonstrate that by using the laterally restrained steel plate retrofitting method(LRSP retrofitting method), the seismic performance of coupling beams could be enhanced effectively. However, the deformation performance of RC shears walls with retrofitted coupling beams is still not clear. Based on the numerical model established by finite element software OpenSees, the seismic performances of RC shears walls after retrofitting are analyzed. Numerical results reveal that when the values of aspect ratio,axial compression ratio and reinforcement ratio are in certain range, the seismic performances of the shear wall structure after retrofitting can be greatly improved.
作者
程蓓
高旭杰
杨参天
Cheng Bei;Gao Xu-jie;Yang Can-tian(Beijing Advanced Innovation Center for Future Urban Design,Beijing 100044,China;School of Civil and Transportation Engineering,Beijing University of Civil Engineering and Architecture,Beijing 100044,China)
出处
《工程抗震与加固改造》
北大核心
2019年第1期112-117,共6页
Earthquake Resistant Engineering and Retrofitting
基金
国家重点研发计划资助项目(2017YFC0703600)
北京市自然科学面上基金项目(8162014)
国家自然科学青年基金项目(51208023)
关键词
联肢剪力墙
螺栓钢板
抗震加固
高宽比
轴压比
配筋率
coupled shear wall
seismic retrofitting
aspect ratio
axial compression ratio
reinforcement ratio
