鋼結構建物性能設計法耐震評估之研究

An Investigation on Seismic Evaluation of Performance-Based Design Method for Steel Structure Buildings

莊曉燕(Hsiao-Yen Chuang)

指導教授 ： 簡秋記

中原大學/工學院/土木工程研究所/碩士(2003年)

https://doi.org/10.6840/cycu200300621

摘要

傳統耐震設計是以制式化條文進行結構設計，僅強調建物大震不倒，並未完整考量建物在各種地震水準下所應具備之耐震能力、容許損害情形及震後堪用程度等，此種設計方式無法真實反應出結構物之性能。近年來耐震設計新趨勢─性能設計法係以結構物實際需求之功能為考量要素，著重於結構物受地震力作用時，結構行為與震後的結構性能必須符合預期或設計要求，對結構設計提供較具彈性之方法。美國ATC-40耐震規範即是以此為基礎之評估方法。
本文擬以鋼結構建物為研究案例，以美國ATC-40規範為理論架構，利用SAP2000軟體進行非線性靜力分析，以得出在性能績效點下建物塑性鉸分佈情形、各樓層間變位角之變化狀況以及桿件損壞程度等情形，並加以檢核，瞭解結構物耐震能力。期能在建物性能與地震水準取得一平衡點，以滿足性能設計法之基本要求，並佐以歷時分析加以驗證。

關鍵字

非線性靜力分析 ； 性能設計法 ； 歷時分析 ； ATC-40 ； 側推法

並列摘要

The traditional seismic design of building’s structure is processed by institutionalized laws which only emphasize that the buildings are not allowed to collapse during serious earthquakes. However, these types of designs do not include the seismic capacity, damage permission and usability after earthquakes for the various kinds of earthquake levels. Indeed, the method cannot really reflect the actual performance of the buildings. Recently, the performance-based seismic design and assessment are developed in the world. It focuses on structural behaviors and checks if its performance conforms the expectation or design demands during the earthquakes. It provides the manner of flexibility for structural design. According to the above-mentioned principles, the ATC-40 seismic code of the United State America is developed.
In the thesis, we investigate the behaviors of the steel structure buildings. The framework is based on ATC-40, and the software SAP2000 is adopted to process non-linear static analysis. We can obtain the results of structural plastic hinge locations, the interstory drifts and the damage of members at the performance point, and then check if they satisfy the performance level or not. It is expected that a balanced point is obtained between building performance and earthquake levels. In addition, time-history analysis is carried out and it provides a reference direction for the related code.

並列關鍵字

time-history analysis ； non-linear static analysis ； performance-based design. ； pushover method ； ATC-40

參考文獻

5.Fajfar, P. and Gaspersic, P., “The N2 Method for the Seismic Damage Analysis of RC Buildings,” Journal of Earthquake Engineering and Structural Dynamics, Vol. 25, pp. 31~46 (1996).

6.Applied Technology Council, “Seismic Evaluation and Retrofit of Concrete Buildings,” ATC-40, Vol. 1, Redwood City, C.A (1996).

7.Federal Emergency Management Agency (FEMA), “NEHRP Guidelines and Complementary for the Seismic Rehabilitation of Buildings,” FEMA 273-274 (1997).

8.Tso, W.K. and Moghadam, A.S., “Pushover Procedure for Seismic Analysis of Building,” Structural Engineering and Materials, Vol. 3, pp. 337~344 (1998).

13.Luco, N., and Cornell, A., “Effects of Seismic Structural Performance,” Journal of Structural Engineering, Vol. 111, No. 6, June (1985).