鋼骨抗彎矩構架梁柱接頭之設計研究

Design of Prequalified Beam-Column Connections for Steel Moment Frames

趙志鴻(Chih-Hung Chao)

指導教授 ： 黃昭勳

國立臺北科技大學/工程學院/土木與防災研究所/碩士(2005年)

https://doi.org/10.6841/NTUT.2005.00276

摘要

在多數人的觀念當中，鋼結構是一種具有高度韌性的結構系統；若就實務上而言，結構整體之韌性則與構件及梁柱接頭之力學特性有關。在1994年美國Northridge地震及1995日本Hyogoken-Nanbu地震中，許多鋼結構在梁柱接頭位置均出現非預期的破壞，這些破壞顯示既有的梁柱接合方式無法提供結構系統所需的強度及韌性。為確保鋼結構能夠發揮預期之耐震能力，美國 Federal Emergency Management Agency (FEMA) 在2000年根據研究人員在前述地震中所發現的若干缺失及抗彎矩構架之韌性需求提出若干設計及施工上的建議，並根據相關研究及實驗的結果提供數種改良後的樑柱接頭型式，期能改善相關結構之耐震能力，並做為工程師在設計上的參考。本研究中即以一鋼結構韌性抗彎矩構架為例，針對上述之接頭型式進行設計上之研究。

關鍵字

鋼結構 ； 抗彎矩構架 ； 接頭 ； 塑性容量

並列摘要

While perceived ductile by many designers, the actual performance of a moment-resisting steel frame depends on the mechanical behaviors of frame connections. During the 1994 Northridge and 1995 Hyogoken-Nanbu (Kobe) Earthquakes, numbers of connection failures were discovered in steel moment-resisting frames, illustrating that the existing connections in many steel structures did not satisfy the strength and ductility demands as specified. In order to ensure the development of strength and deformability in these connections, the Federal Emergency Management Agency (FEMA) proposed a series of guidelines, commonly known as FEMA-350, for the design and construction of moment connections in special moment-resisting frames. Exemplary details expected to improve the seismic performance of structure systems were also provided in this document based on the conclusions of extensive tests. In this study, design examples were given on a moment-resisting frame using these connections. Conclusions of this study would provide engineers as a reference in future designs.

並列關鍵字

Steel Structure ； Moment-resisting Steel Frame ； Connection ； Plastic Capacity

參考文獻

〔2〕ATC, Seismic Evaluation and Retrofit of Concrete Buildings (ATC-40), Applied Technology Council, Redwood city, California, 1996

〔3〕FEMA, Evaluation, Repair, Modification, and Design of Welded Steel Moment Frame Structures (FEMA-267), Federal Emergency Management Agency, Washington, D.C., 1995

〔4〕FEMA, NEHRP Guidelines for the Seismic Rehabilitation of Buildings (FEMA-273), Federal Emergency Management Agency, Washington, D.C., 1997

〔5〕FEMA, Recommended Seismic Design Criteria for New Steel Moment-Frame Buildings (FEMA -350), Federal Emergency Management Agency, Washington, D.C., 2000

〔6〕FEMA, Recommended Seismic Evaluation and Upgrade Criteria for Existing Welded Steel Moment-Frame Buildings (FEMA-351), Federal Emergency Management Agency, Washington, D.C., 2000