全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2013 

用带防屈曲支撑的内嵌式钢框架加固混凝土框架的试验研究

DOI: 10.6052/j.issn.1000-4750.2012.08.0618, PP. 189-198

Keywords: 结构工程,加固,防屈曲支撑,抗震机理,混凝土框架

Full-Text   Cite this paper   Add to My Lib

Abstract:

针对既有混凝土框架抗震性能的不足,研究增设防屈曲支撑(BRB)的消能减震加固技术方案。为尽量减少原主体结构的受力负担、提高加固效果,设置了内嵌式钢框架并安装BRB,对加固后的混凝土框架进行了试验研究。该文设计、制作了2榀用此法加固的混凝土框架,1榀纯混凝土框架作为对比。通过低周反复荷载试验,研究了荷载-侧移滞回曲线、骨架线、支撑轴向变形曲线、等效刚度及退化规律、等效粘滞阻尼比等抗震减震性能。结果表明设计的减震加固混凝土框架荷载-侧移滞回曲线饱满,BRB耗能稳定,能显著提高结构承载力,增加结构阻尼,有效降低地震反应。内嵌式钢框架传力可靠,可有效平衡支撑承载力,充分发挥BRB的作用,挖掘梁、楼板的延性潜力,改进了受力工作机制,抗震性能改进明显。

References

[1]  Uang Chic-Ming, Nakashima Masayoshi, Tsai Keh-Chyuan. Research and application of buckling- restrained braced frames [J]. Steel Structures, 2004, 4: 301―313.
[2]  程光煜, 叶列平, 许秀珍, 崔鸿超. 防屈曲耗能钢支撑的试验研究[J]. 建筑结构学报, 2008, 29(1): 31―39.
[3]  Cheng Guangyu, Ye Lieping, Xu Xiuzhen, Cui Hongchao. Experimental study on buckling-restrained brace [J]. Journal of Building Structure, 2008, 29(1): 31―39. (in Chinese)
[4]  Fahnestock L A, Sause R, Ricles J M. Seismic response and performance of buckling-restrained braced frames [J]. Journal of Structural Engineering, 2007, 133(9): 1195―1204.
[5]  刘建彬. 防屈曲支撑及防屈曲支撑钢框架设计理论研究[D]. 北京: 清华大学, 2005: 9―28.
[6]  Liu Jianbin. Research on the design theory of buckling-restrained braces and buckling-restrained braced frames [D]. Beijing: Tsinghua University, 2005: 9―28. (in Chinese)
[7]  孙艳文. 钢骨消能支撑钢框架抗震性能研究[D]. 西安: 西安建筑科技大学, 2005: 11―14.
[8]  Sun Yanwen. Study on seismic behavior of buckling restrained braced frame [D]. Xi#x02019;an: Xi#x02019;an University of Architecture and Technology, 2005: 11―14. (in Chinese)
[9]  Yoshino T, Karino Y. Experimental study on shear wall with braces: Part 2. summaries of technical papers of annual meeting [J]. Structural Engineering Fascicle, Architectural Institute of Japan, 1971, 11: 403―404.
[10]  Brown A P, Aiken I D, Jafarzadeh F J. Buckling restrained braces provide the key to the seismic retrofit of the Wallace F. Bennett Federal Building [J]. Modern Steel Construction, 2001, 8: 1―9.
[11]  GB50011-2010, 建筑抗震设计规范[S]. 2010.
[12]  GB50011-2010, Code for seismic design of buildings [S]. 2010. (in Chinese)
[13]  JGJ145-2004, 混凝土结构后锚固技术规程[S]. 2005.
[14]  JGJ145-2004, Technical specification post-installed fastenings in concrete structures [S]. 2005. (in Chinese)
[15]  JGJ101-96, 建筑抗震试验方法规程[S]. 1996.
[16]  JGJ101-96, Specification of testing methods for earthquake resistant Building [S]. 1996. (in Chinese)
[17]  高向宇, 杜海燕, 张慧, 梁峰. 国标Q235热轧钢材防屈曲支撑抗震性能试验研究[J]. 建筑结构, 2008, 38(3): 91―95.
[18]  Gao Xiangyu, Du Haiyan, Zhang Hui, Liang Feng. Experimental study on seismic performance of buckling-restrained brace made of Q235 hot-rolled steel in China [J]. Building Structure, 2008, 38(3): 91―95. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133