钢管混凝土柱-钢连梁耗能墙设计方法及抗震性能试验
Design method and experimental study on damping wall consisted of concrete-filled steel tubular columns and steel coupling beams
兰炳稷 1何浩祥 1陈易飞 1吴山 1程时涛1
作者信息
- 1. 北京工业大学工程抗震与结构诊治北京市重点试验室,北京 100124
- 折叠
摘要
针对多高层钢框架结构中的钢筋混凝土抗侧力墙体在地震作用下损伤集中、材料利用率低、延性及耗能效果均不理想的问题,提出一种钢管混凝土柱-钢连梁耗能墙,并优选出强柱弱梁型墙体与强梁弱柱型墙体两种墙体构造形式,推导了两类墙体的构造条件与关键性能参数理论计算方法,通过试验与有限元模拟相结合的方式对比了两类墙体的抗震性能,同时对提出的设计和性能参数计算理论开展验证.研究结果表明:强柱弱梁型墙体可以实现分布式均匀耗能,其等效黏滞阻尼比系数峰值大于0.3,位移延性系数大于8,其抗震性能显著优于强梁弱柱型墙体的;所提出的墙体设计原则及关键性能参数计算方法具备良好的有效性和准确性.
Abstract
Reinforced concrete shear walls used in multi-storey steel frame structures are prone to concentrated damage under seismic action,resulting in low material utilization and unsatisfactory ductility and energy dissipation effects.Therefore,a concrete-filled steel tubular column(CFSTC)-steel coupling beam(SCB)energy dissipated wall was proposed,and two types of wall structures,namely'strong column-weak beam'and'weak column-strong beam',were selected.The construction conditions and key performance parameters of the two types of walls were derived by theoretical calculation methods,and the seismic performance of the two types of walls was compared by combining experiments and finite element simulations.The verification of the design and performance parameter calculation theory was also carried out.The research results show that the'strong column-weak beam'type wall achieves uniformly distributed energy dissipation,with peak value of equivalent viscous damping ratio greater than 0.3,displacement ductility coefficient greater than 8,which shows significantly better seismic performance than the'weak column-strong beam'type wall.In addition,the wall design principles and key performance parameter calculation methods proposed in the paper have good validity and accuracy.
关键词
耗能墙/耗能机制/拟静力试验/设计方法/有限元模拟Key words
damping wall/energy dissipation mechanism/quasi-static experiment/design method/finite element simulation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据