用外贴BRB减震框架加固既有混凝土结构的研究

高向宇; 李自强; 李建勤; 黄海涛; 武娜; 任洁

doi:10.6052/j.issn.1000-4750.2013.03.0152

用外贴BRB减震框架加固既有混凝土结构的研究

高向宇^1,,
李自强²,
李建勤¹,
黄海涛^{1, 3},
武娜^{1, 4},
任洁¹

1.
北京工业大学建工学院,北京100124;
2.
北京市住房与城乡建设委员会,北京100039;
3.
中国恩菲工程技术有限公司,北京100038;
4.
中国建筑科学研究院,北京100013

基金项目: 北京市住房和城乡建设委员会科技项目(BJJQ-2010-169-01); “十二五”国家科技计划课题项目(2011BAJ08B03-4)

详细信息

作者简介:
李自强(1960―),男,北京人,高工,工学硕士,从事土木工程管理与研究(E-mail: lizq728@263.net); 李建勤(1987―),男,北京人,博士生,从事结构工程研究(E-mail: lijianqin328@sina.com); 黄海涛(1984―),男,山东人,工程师,工学硕士,从事结构工程设计研究(E-mail: hhtaaa@163.com); 武娜(1986―),女,山西人,工程师,工学硕士,从事结构工程设计研究(E-mail: wuna@cabr-design.com); 任洁(1985―),男,河南人,工程师,工学硕士,从事结构工程设计研究(E-mail: hongruren@163.com).

通讯作者:
高向宇(1959―),男,北京人,教授,工学博士,从事土木建筑工程研究(E-mail: gaoxy@bjut.edu.cn).

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出版历程
- 收稿日期: 2013-02-28
- 修回日期: 2013-09-20
- 刊出日期: 2014-08-24

SEISMIC REROFITTING OF EXISTING CONCRETE STRURES WITH BRBS INSTALLED IN ADDITIONAL CONCRETE FRAMES

1.
College of Civil Engineering and Architecture, Beijing University of Technology, Beijing 100124, China;
2.
Beijing Municipal Commission of Housing and Urban-Rural Development, Beijing 100039, China;
3.
China ENFI Engineering Corporation, Beijing 100038, China;
4.
China Academy of Building Research, Beijing 100013, China

摘要

摘要: 采用外贴BRB减震框架对按TJ11-78设计的混凝土结构进行了加固设计,对比计算了原结构和减震加固结构的抗震性能,包括地震作用、位移、轴压比、层间剪力等,进行了非线性推覆分析和动力时程分析,对比了塑性铰状态、铰分布规律、内力包络等。研究了用此法加固时可减轻既有框架负担,改变原有框架存在的底部轴压比大、剪力大、层间侧移角大的先天不足规律的机理。此法可充分发挥消能减震技术的优越性,得到更好的抗震性能和结构性态。通过静力反复加载试验,验证了减轻主体结构震害、转移塑性铰布局规律的效果。建议的加固方法还可减少或避免室内作业,为用户和施工者提供便利条件。
- 防屈曲支撑 /
- 混凝土结构 /
- 加固 /
- 消能减震 /
- 抗震设计
Abstract: A seismic retrofitting scheme of a concrete building, constructed based on Chinese Standard TJ11-78, is designed by using BRB concrete frames. Comparisons are made on seismic behavior between the original and the retrofitted structure in terms of seismic actions, displacement, the ratio of axial force to strength, and inter-story shear forces, etc. Nonlinear static pushover analysis and dynamic analysis are conducted. Plastic hinge status, hinge distribution features, and inner forces envelopes are compared. Results have shown that the retrofitting technology alleviates seismic forces on existing frames, and avoids the significant axial compression force, shearing force, and inter-story drift angle occurring at the bottom stories of the original frame. By applying this method, energy dissipation and seismic reduction can be enhanced, and better seismic behavior of concrete frames can be achieved. Static lowly cyclic loading tests are also conducted, demonstrating effective seismic damage reduction and plastic hinge distribution transfer. With this method, indoor wet construction work can be avoided, which is beneficial for both constructors and residents.
- buckling-restrained braces /
- concrete buildings /
- retrofit /
- energy dissipation and seismic reduction /
- seismic design

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参考文献(17)

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文章访问数: 387
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用外贴BRB减震框架加固既有混凝土结构的研究

通讯作者: 高向宇(1959―),男,北京人,教授,工学博士,从事土木建筑工程研究(E-mail: gaoxy@bjut.edu.cn).

计量

出版历程

SEISMIC REROFITTING OF EXISTING CONCRETE STRURES WITH BRBS INSTALLED IN ADDITIONAL CONCRETE FRAMES

计量

出版历程

目录

通讯作者:
高向宇(1959―),男,北京人,教授,工学博士,从事土木建筑工程研究(E-mail: gaoxy@bjut.edu.cn).