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  2014 

土结相互作用对框架结构倒塌的影响研究

DOI: 10.6052/j.issn.1000-4750.2012.09.0638, PP. 87-92

Keywords: 框架结构,土结相互作用,土体弹簧模型,倒塌,塑性铰分布

Full-Text   Cite this paper   Add to My Lib

Abstract:

在结构的强震倒塌研究中,结构底部土体的变形会影响上部结构的非线性性能和倒塌机制。该文以一10层钢筋混凝土框架结构为例,利用纤维梁模型模拟梁、柱的非线性反应,并根据ATC-40的土体弹簧模型分别考虑软弱土、中软土、中硬土的影响。分析表明,考虑土结相互作用后,结构顶点位移变大,由此产生的结构侧移会加大结构的整体二阶效应,同时结构的变形明显集中于首层,对结构反应不利;从结构的破坏形态来看,不考虑土结相互作用,结构的破坏始于首层柱底,而考虑土结相互作用后,首层柱顶首先屈服破坏,在上部结构塑性性能未充分发挥前,结构底层发生倒塌破坏,结构的抗倒塌能力降低。

References

[1]  Wolf J P. Dynamic Soil-Structure Interaction[M]. Prentice-Hall: Englewood Cliffs, NJ, 1985.
[2]  Mylonakis G, Gazetas G. Seismic soil-structural interaction: Beneficial or Detrimental?[J]. Journal of Earthquake Engineering, 2000, 4(3): 277―301.
[3]  Dutta S C, Bhattacharya K, Roy R. Effect of flexibility of foundations on its seismic stress distribution[J]. Journal of Earthquake Engineering, 2009, 13(1): 22―49.
[4]  Dutta S C, Roy R. A critical review on idealization and modeling for interaction among soil-foundation-structure system[J]. Computers and Structures, 2002, 80(20/21): 1579―1594.
[5]  Aviles J, Perez-Rocha L. Soil-structure interaction in yielding systems[J]. Earthquake Engineering and Structural Dynamics, 2003, 32(11): 1749―1771.
[6]  FEAM 440, Improvement of nonlinear static seismic analysis procedures[S]. Federal Emergency Management Agency, Prepared by Applied Technology Council, 2005.
[7]  ATC-40, Seismic evaluation and retrofit of concrete buildings[R]. Report No. SSC 96-01, California Seismic Safety Commission: Redwood City, CA, 1996.
[8]  Galal K, Naimi M. Effect of soil conditions on the response of reinforced concrete tall structures to near-fault earthquakes[J]. The Structural Design of tall and Special Buildings, 2008, 17(3): 541―562.
[9]  陆新征, 叶列平, 缪志伟. 建筑抗震弹塑性分析—原理、模型与在ABAQUS, MSC.MARC和SAP2000上的实践[M]. 北京: 中国建筑工业出版社, 2009.
[10]  Lu Xinzheng, Ye Lieping, Miao Zhiwei. Elasto-plastic analysis of buildings against earthquake—thory, model and implementation on ABAQUS, MSC.MARC and SAP 2000[M]. Beijing: China Architecture and Building Press, 2009. (in Chinese)
[11]  陆新征, 缪志伟, 江见鲸, 叶列平. 静力和动力荷载作用下混凝土高层结构的倒塌模拟[J]. 山西地震, 2006, 16(2): 7―11.
[12]  Lu Xinzheng, Miao Zhiwei, Jiang Jianjing, Ye Lieping. Collapse simulation of high-rise structure of concrete under the action of static and dynamic load[J]. Earthquake Research in Xian, 2006, 16(2): 7―11. (in Chinese)
[13]  Lu X, Lu X Z, Zhang W K, Ye L P. Collapse simulation of a super high-rise building subjected to extremely strong earthquakes[J]. Science China Technological Sciences, 2011, 54(10): 2549―2560.
[14]  陆新征, 林旭川, 叶列平, 李易, 唐代远, 等. 地震下高层建筑连续倒塌数值模型研究[J]. 工程力学, 2010, 27(11): 64―70.
[15]  Lu Xinzheng, Lin Xuchuan, Ye Lieping, Li Yi, Tang Daiyuan, et al. Numerical models for earthquake induced progressive collapse of high-rise buildings[J]. Engineering Mechanics, 2010, 27(11): 64―70. (in Chinese)
[16]  孙柏涛, 张桂欣. 汶川8.0级地震中各类建筑结构地震易损性统计分析[J]. 土木工程学报, 2012, 4(5): 26―30.
[17]  Sun Baitao, Zhang Guixin. Statistical analysis of the seismic vulnerability of various types of building structures in Wenchuan M8.0 earthquake[J]. China Civil Engineering Journal, 2012, 4(5): 26―30. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133