高樓結構耐震性能評估所需地震歷時記錄之縮放方法研究

Scaling Ground Motions for Performance Assessment of Tall Building

何越勇(HA VIET DUNG)

指導教授 ： 黃尹男

國立臺灣大學/工學院/土木工程學研究所/碩士(2012年)

https://doi.org/10.6342/NTU.2012.02555

摘要

無資料

關鍵字

地震歷時記錄 ； 縮放 ； 耐震性能評估 ； 高樓 ； 側推分析

並列摘要

Next generation performance-based earthquake engineering involves the use of a probability framework, which incorporates the inherent uncertainty and variability in seismic hazard, structural and non-structural responses, damage states and economic and casualty losses. One key issue in seismic performance assessment is the scaling of ground motions for nonlinear response-history analysis. This research is in the second phase of a project, which investigates the impact of ground-motion scaling procedures on the distributions of structural responses for tall buildings. In the previous phase of the project, four ground-motions scaling procedures were studied, namely: 1) geometric-mean scaling of pairs of ground motions, 2) spectrum matching, 3) first-mode-based scaling to a target spectral acceleration, and 4) maximum-minimum orientation scaling. In this thesis, three more scaling procedures are investigated, including: modal-pushover-based scaling, distribution-based scaling and Jayaram and Baker’s scaling methods. Nonlinear response-history analyses are conducted to study the distributions of peak floor acceleration, peak story drift and floor spectral acceleration responses of a sample 34-story high-rise building subjected to ground motions scaled using the three methods. The advantages and disadvantages of each method and the impact of scaling on the seismic performance of tall buildings are discussed.

並列關鍵字

ground motions ； scaling ； seismic performance assessment ； high-rise building ； pushover

參考文獻

Applied Technology Council (ATC). (1996). "Seismic evaluation and retrofit of concrete buildings." ATC-40. Applied Technology Council, Redwood City, CA.

Baker, J.W., and Jayaram, N., (2008)."Correlation of spectral acceleration values from NGA ground motion models, Earthquake Spectra, 24, 299–317.

Baker, J.W., (2011). "The conditional mean spectrum: A tool for ground motion selection.", ASCE Journal of Structural Engineering, 137, 322–331.

Chopra, A.K., and Goel, R.K. (2002). “A modal pushover analysis procedure for estimating seismic demands for buildings.” Earthquake Engineering and Structural Dynamics, 31,561-582.

Chopra, A.K. (2001). Dynamic of Structures:Theory and Applications to Earthquake Engineering, 2nd Edition. Prentice Hall, New Jersey.