[1] Yu Qi, Meng Shaoping, Wu Jing, Sun Weiwei(Key Laboratory of Reinforced Concrete and Prestressed Concrete Structures of Ministry of Education, et al. Simplified stiffness-based approachfor seismic performance evaluation of moment-resisting frame [J]. Journal of Southeast University (English Edition), 2009, 25 (2): 241-246. [doi:10.3969/j.issn.1003-7985.2009.02.021]

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Simplified stiffness-based approachfor seismic performance evaluation of moment-resisting frame()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

25

Issue:

2009 2

Page:

241-246

Research Field:

Civil Engineering

Publishing date:

2009-06-30

Info

Title:

Simplified stiffness-based approachfor seismic performance evaluation of moment-resisting frame

Author(s):

Yu Qi¹;  Meng Shaoping¹;  Wu Jing¹;  Sun Weiwei²(¹Key Laboratory of Reinforced Concrete and Prestressed Concrete Structures of Ministry of Education;  Southeast University;  Nanjing 210096;  China)

² Department of Civil Engineering, Nanjing University of Science and Technology, Nanjing 210094, China

Keywords:

damage index;  seismic evaluation;  capacity spectrum method;  frame;  lateral load pattern;  pushover analysis;  performance level;  stiffness degradation

PACS:

TU313.3;TU375.4

DOI:

10.3969/j.issn.1003-7985.2009.02.021

Abstract:

Based on the concept of stiffness degradation, a damage index of the whole frame and the storey is proposed for the frame seismic performance evaluation.The index is compatible with the non-linear static analysis(e.g. the pushover analysis), and the structural damage is considered via plastic hinges.Simultaneously, a practical approach is developed to obtain the relationships between the proposed index and earthquake intensities based on the capacity spectrum method.The proposed index is then illustrated through two low-rise reinforced concrete frames, and it is also compared with some other indices.The results indicate that the proposed index is on the safe side and not sensitive to the lateral load pattern.The storey index is helpful to reflect the storey damage and to uncover the position of the weak storey.Finally, the relationship between performance levels and damage index values is also proposed through statistical analysis for the performance-based seismic evaluation.

References:

[1] Ghobarah A.Seismic assessment of existing RC structures [J].Prog Struct Engng Mater, 2000, 2(1):60-71.
[2] Whitman R V, Biggs J M, Brennan J E, et al.Seismic design decision analysis [J].J Struct Div ASCE, 1979, 101(5):1067-1084.
[3] Shiga T, Shibata A, Takahashi T.Earthquake damage and wall index of reinforced concrete buildings [C]//Proceedings of Tohoku District Symposium.Architectural Institute of Japan, 1968:29-32.
[4] Yang Y, Yang L.Empirical relationship between damage to multistorey brick buildings and strength of walls during the Tangshan earthquake [C]//Proceedings of the 7th World Conference on Earthquake Engineering.Istanbul, Turkey, 1980, 6:501-508.
[5] Park Y J, Ang A H S.Mechanistic seismic damage model for reinforced concrete [J].J Struct Div ASCE, 1985, 111(4):722-739.
[6] Ghobarah A, Abou-Elfath H, Biddah A.Response-based damage assessment of structures [J].Earthquake Engineering & Structural Dynamics, 1999, 28(1):79-104.
[7] Applied Technology Council.ATC-40 Seismic evaluation and retrofit of concrete buildings [R].Redwood City, CA: Applied Technology Council, 1996.
[8] Freeman S A.Development and use of capacity spectrum method [CD]//The 6th US National Conference on Earthquake Engineering.Oakland, CA, USA, 1998.
[9] Ministry of Construction of PRC.GB 5001—2001 Code for seismic design of buildings[S].Beijing:China Architecture and Building Press, 2001.(in Chinese)
[10] Krawinkler H, Seneviratna G D P K.Pros and cons of a pushover analysis of seismic performance evaluation [J].Engineering Structures, 1998, 20(4/5/6):452-464.
[11] Hou Shuang, Ou Jinping.A study of load pattern selection of pushover analysis and influence of higher modes [J].Earthquake Engineering and Engineering Vibration, 2004, 24(3):89-97.(in Chinese)
[12] Chopra A K.Dynamics of structures-theory and applications to earthquake engineering [M].2nd ed.Beijing:Higher Education Press, 2005:165-174.(in Chinese)
[13] Chopra A K, Goel R K.A modal pushover analysis procedure for estimating seismic demands for buildings[J].Earthquake Engineering & Structural Dynamics, 2002, 31(3):561-582.
[14] Kalkan E, Kunnath S K.Adaptive modal combination procedure for nonlinear static analysis of building structures[J].Journal of Structural Engineering, 2006, 132(11):1721-1731.

Memo

Memo:

Biographies: Yu Qi(1983—), male, graduate;Meng Shaoping(corresponding author), male, doctor, professor, Cardoso_-meng@sina.com.
Foundation item: The National Basic Research Program of China(973 Program)(No.2007CB714200).
Citation: Yu Qi, Meng Shaoping, Wu Jing, et al.Simplified stiffness-based approach for seismic performance evaluation of moment-resisting frame[J].Journal of Southeast University(English Edition), 2009, 25(2):241-246.

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