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 

混凝土空间板柱结构震致落层倒塌的试验研究

DOI: 10.6052/j.issn.1000-4750.2011.06.0411, PP. 277-287

Keywords: 板柱结构,薄弱层,振动台试验,落层倒塌,地震

Full-Text   Cite this paper   Add to My Lib

Abstract:

开展了2个具有薄弱层的3层混凝土空间板柱结构模型的地震模拟振动台试验,采用加速度峰值逐级加大的El-Centro(NS)波作为输入激励,直至薄弱层发生落层倒塌。量测了倒塌前、倒塌后模型各层的水平加速度响应,以及倒塌碰撞引发的薄弱层及其下层楼板的竖向加速度响应。模型M-2相比于模型M-1额外施加了附加配重。试验结果表明:1)随着地震损伤程度的增加,模型的扭转效应有所增大;2)倒塌前模型M-1和模型M-2的基本频率仅比初始值分别降低8.9%和4.7%,采用频率改变幅度进行结构倒塌预警可能是不现实的;3)倒塌碰撞导致模型各层的水平加速度出现短时剧烈波动,波动期间模型M-1和模型M-2各层的绝对加速度最大值介于5g~10g之间,分别为倒塌前各层绝对加速度最大值的5倍~20倍和10倍~50倍;4)倒塌碰撞引发的楼板竖向加速度高达30g~40g。

References

[1]  Talaat M, Mosalam K M. Modeling of progressive collapse in reinforced concrete frame structures [R]. Pacific Earthquake Engineering Research Center, PEER Report, 2007.
[2]  Sasani M, Kropelnicki J. Progressive collapse analysis of an RC structure [J]. The Structural Design of Tall and Special Buildings, 2008, 17(4): 757―771.
[3]  Kim Y, Kabeyasawa T. Dynamic test and analysis of an eccentric reinforced concrete frame to collapse [C]. Proceedings of the 13th World Conference on Earthquake Engineering, Paper No.381, Vancouver, BC, Canada, August 1-6, 2004.
[4]  Wu C L, Loh C H, Yang Y S. Shake table tests on gravity load collapse of low-ductility RC frames under near-fault earthquake excitation [C]. Proceedings of the Advances in Experimental Structural Engineering. Nagoya, Japan, 2005: 725―732.
[5]  Ghannoum W. Experimental and analytical dynamic collapse study of a reinforced concrete frame with light transverse reinforcements [D]. Berkeley: University of California, 2007.
[6]  Hakuno M, Meguro K. Simulation of concrete-frame collapse due to dynamic loading [J]. Journal of Engineering Mechanics, 1993, 119(9): 1709―1723.
[7]  孙利民, 秦东, 范立础. 扩展散体单元法在钢筋混凝土桥梁倒塌分析中的应用[J]. 土木工程学报, 2002, 35(6): 53―58.
[8]  Sun Limin, Qin Dong, Fan Lichu. A new model for collapse analysis of reinforced concrete bridge [J]. China Civil Engineering Journal, 2002, 35(6): 53―58. (in Chinese)
[9]  张雷明. 灾害荷载下结构倒塌机制研究[D]. 北京: 清华大学, 2000.
[10]  Zhang Leiming. Research on structure collapse mechanism under disaster loads [D]. Beijing: Tsinghua University, 2000. (in Chinese).
[11]  张富文, 吕西林. 框架结构不同倒塌模式的数值模拟与分析[J]. 建筑结构, 2009, 30(5): 119―125.
[12]  Zhang Fuwen, Lü Xilin. Numerical simulation and analysis of different collapse patterns for RC frame structure [J]. Journal of Building Structures, 2009, 30(5): 119―125. (in Chinese)
[13]  黄庆华. 地震作用下钢筋混凝土框架结构空间倒塌反应分析[D]. 上海: 同济大学, 2006.
[14]  Huang Qinghua. Study on spatial collapse responses of reinforced concrete frame structures under earthquake [D]. Shanghai: Tongji University, 2006. (in Chinese).
[15]  吴波, 黄仕香, 赵新宇. 混凝土框剪结构的落层倒塌碰撞试验[J]. 工程力学, 2012, 29(6): 176―187.
[16]  Wu Bo, Huang Shixiang, Zhao Xinyu. Experimental study on pancake collapse of RC frame-shear wall structures [J]. Engineering Mechanic, 2012, 29(6): 176―187. (in Chinese)
[17]  郑山锁. 动力试验模型在任意配重条件下与原型结构的相似关系[J]. 工业建筑, 2000, 30(3): 35―39.
[18]  Zheng Shansuo. Analogical ratio between scale models with less ballast and their prototypes under shaking table test [J]. Industrial Construction, 2000, 30(3): 35―39. (in Chinese)
[19]  张晋. 采用MATLAB进行振动台试验数据的处理[J]. 工业建筑, 2002, 32(2): 28―30.
[20]  Zhang Jin. Using MATLAB to deal with data of the shaking table test [J]. Industrial Construction, 2002, 32(2): 28―30. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133