| 带防屈曲支撑的钢管混凝土框架抗震性能参数分析 |
| |
| 引用本文： | 任凤鸣,;张杰标.带防屈曲支撑的钢管混凝土框架抗震性能参数分析[J].地震学刊,2014(4):422-428. |
| |
| 作者姓名： | 任凤鸣 ;张杰标 |
| |
| 作者单位： | [1]广州大学土木工程学院,广州510006; [2]广州瀚华建筑设计有限公司,广州510006 |
| |
| 基金项目： | 国家自然科学基金项目（51108095、51278130）、亚热带建筑科学国家重点实验室开放课题（2012KB11）资助 |
| |
| 摘 要： | 设置防屈曲支撑的钢管混凝土框架是一种新型钢管混凝土减震结构。采用有限元软件Opensees对设置防屈曲支撑的单层单跨钢管混凝土减震框架进行数值模拟,研究了框架梁柱线刚度比、防屈曲支撑初始刚度以及钢管混凝土柱轴压比等设计参数对该减震结构抗震性能的影响。研究结果表明：1数值模拟和试验结果吻合较好,验证了有限元模型的正确性;2梁柱线刚度比在0.1~0.3之间变化时,钢管混凝土减震框架的抗震性能较好;3BRB耗能支撑的初始刚度K1在40~80kN/mm变化时,减震框架的耗能减震效应较明显;4在合理的钢管混凝土柱轴压比范围内,当轴压比较大时,在钢管混凝土框架中设置防屈曲支撑能明显地提高结构的耗能能力和改善结构的强度退化现象。
|
| 关 键 词： | 钢管混凝土框架(CFST) 防屈曲支撑(BRB) 抗震性能 参数分析 |
Parametric Analysis of Seismic Performance of Concrete-filled Steel Tubular Frame with Buckling-restrained Brace |
| |
| Institution: | REN Feng-ming , ZHANG Jie-biao (1. School of Civil Engineering, Guangzhou University, Guangzhou 51006, China; 2. Guangzhou Hanhua Architects＋Engineers Co. Ltd. , Guangzhou 510006, China) |
| |
| Abstract: | Concrete filled steel tubular（CFST） frame with buckling-restrained brace （BRB） is a new type of CFST energy dissipation structure. The effects of linear stiffness ratio of beam to column,initial stiffness of BRB and axial compression ratio of CFST columns on the seismic per- formance of structure were studied by using the finite element software Opensees. The study re- suits show that： （1） the results of numerical simulation agree well with experimental analysis re- sults and the correctness of the numerical model is tested and verified; （2） the CFST frame with BRB has better seismic behaviors, while linear stiffness ratio of beam to column is about 0. 1- 0.3; （3） the energy dissipation effectiveness of the structure is superior when Klis between 40 kN/mm and 80 kN/mm; （4） the seismic performance of CFST frame and the strength degrada- tion can be significantly improved by adding BRB in the structure when the axial compression ra- tio of the CFST columns that is in the reasonable value range is relatively large. |
| |
| Keywords: | concrete filled steel tubular（CFST） frame~ buckling-restrained brace（BRB） ~ seismicperformance~ parametric analysis |
| 本文献已被 维普 等数据库收录！ |
