新型鋼造一層樓雙核心自復位斜撐構架實驗與分析： 含梁柱構架及斜撐軸向效應影響之接合板設計

Experimental and Analytical Studies of a Novel Steel One Story Dual-Core Self-Centering Braced Frame (SCBF): Gusset Design Considering Frame and Brace Actions

歐陽烈(Aleixis Rafael Ovalle Beato)

指導教授 ： 周中哲

國立臺灣大學/工學院/土木工程學研究所/碩士(2014年)

https://doi.org/10.6342/NTU.2014.10451

摘要

無資料

關鍵字

接合板

並列摘要

In recent years, the use of buckling inhibited frames such as BRBs and SCBs has increased as the predominant lateral force resisting system and energy dissipation mechanism in structures. With the use of these braces, several researches have shown that the buckling capacity of the gussets seemed inadequate. Moreover, frame action forces (those induced by the opening and closing of the beam and column) have also caused buckling of the gussets. Researchers have been able to quantify frame and brace action forces and have developed design methodologies based on von Mises stress criteria. However, the design of a gusset based on a particular point might result in an over-conservative result. Given this dilemma, this study focus its attention on a new gusset design procedure that comprehensively takes into consideration both frame and brace action forces while taking into account single and dual gusset configurations. This study concludes that frame and brace action forces can be conservatively decoupled for design. Based on finite element models, AISC design procedure can be taken in the brace direction. On the other hand, a simplified gusset geometry and a modified Euler’s buckling equation are taken as the capacity calculation of the frame direction. Frame direction forces are calculated based on a modified equation proposed by Chou and Liu (2012). Frame and brace action forces are combined using a von Mises stress criteria. In order to assess the modeling abilities of the finite element program ABAQUS, the test results of a one story dual-core self-centering brace frame are compared the results of the finite element models. Reliable accuracy is observed between the test results and the models. Proven the modeling abilities of ABAQUS, two frames are modeled differing only in the design procedure of their gussets. The result shows that gusset design purely based on AISC standards might result in under designed gussets. In addition, the proposed design procedure accurately predicts the failure mechanism of the gusset. However, it notices that for the particular geometry chosen in this study, buckling of the gusset in the frame direction does not entail global failure of the frame

並列關鍵字

gusset ； frame action force ； self-centering brace frame

參考文獻

1. ABAQUS. 2010. Standard user's manual verion 6.10. Providence, RI, USA.: Dassault Systemes Simula Corp.

2. Aiken, I., S. Mahin, P. Uriz, C. Field, and E. Ko. 2004. "Seismic Performance of Buclking Restrained Braced Framed Systems." 13th World Conference on Earthquake Engineering. Vancouver, B.C., Canada. Paper No. 1681.

3. AISC. 2014. AISC Steel Construction Manual. American Institute of Steel Construction.

4. AISC. 2010. "Seismic Provision for Structural Steel Buildings." American Institute of Steel Construction (American Institute of Steel Construction).

5. AISC. 2010. "Specification for Structural Steel Buildings." (American Institute of Steel Construction).