A balanced design procedure for special concentrically braced frame connections

Roeder, Charles W.; Lumpkin, Eric J.; Lehman, Dawn E.

doi:10.1016/j.jcsr.2011.04.016

Cited by 143 publications

(89 citation statements)

References 7 publications

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“…It is assumed that all braces get their limit states at the same time. Many studies have shown that the yielding of all braces in medium-to high-rise SCBFs is almost impossible during the severe ground motions (Roeder et al 2011;Hsiao et al 2013). The mentioned assumption can be somewhat conservative and uneconomic to design the columns, especially in lower stories.…”

Section: Srss Methods For Design Of Columns In Medium To High-rise Scbfsmentioning

confidence: 99%

“…According to some researches in the last two decades or so, current seismic codes (AISC 2005) include provisions to design ductile concentrically braced frames which are known as special concentrically braced frames (SCBFs). Many researchers have shown that SCBFs designed by conventional elastic design method suffered severe damage or even collapse under design level ground motion (MacRae et al 2004;Broderick et al 2008;Richards 2009;Roeder et al 2011). It is well recognized that current codes are based on elastic structural behavior and account for the inelastic behavior indirectly.…”

Section: Introductionmentioning

confidence: 99%

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Performance-based plastic design method for steel concentric braced frames

Banihashemi

Mirzagoltabar

Tavakoli

2015

Int J Adv Struct Eng

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This paper presents a performance-based plastic design (PBPD) methodology for the design of steel concentric braced frames. The design base shear is obtained based on energy-work balance equation using pre-selected target drift and yield mechanism. To achieve the intended yield mechanism and behavior, plastic design is applied to detail the frame members. For validity, three baseline frames (3, 6, 9-story) are designed according to AISC (Seismic Provisions for Structural Steel Buildings, American Institute of Steel Construction, Chicago, 2005) seismic provisions (baseline frames). Then, the frames are redesigned based on the PBPD method. These frames are subjected to extensive nonlinear dynamic time-history analyses. The results show that the PBPD frames meet all the intended performance objectives in terms of yield mechanisms and target drifts, whereas the baseline frames show very poor response due to premature brace fractures leading to unacceptably large drifts and instability.

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Section: Srss Methods For Design Of Columns In Medium To High-rise Scbfsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance-based plastic design method for steel concentric braced frames

Banihashemi

Mirzagoltabar

Tavakoli

2015

Int J Adv Struct Eng

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“…골조는 상당히 큰 비탄성 변형 능력을 발휘할 수 있다 [1], [2], [3] . 이러한 이점 때문에, 국내･외 건축구조 연구진들은 지난 수십 년간 특수중심가새골조의 내진 성능과 거동에 대해 실 험적･해석적 연구가 진행되었고, 이로 인해 설계법과 설계 기준이 비약적으로 발달했다 [4], [5], [6] .…”

Section: 특히 특수중심가새골조의 접합부가 적절하게 설계된다면unclassified

“…Roeder 등이 제안한 균형설계절차(Balanced Design Procedure, BDP) [1] 로 설계된 실험체이다. 와 SAC 강재실험프로토콜 Yoo의 해석연구 [3], [13] 에서는 가새골조의 비선형 해석을 이용 .…”

Section: 특수중심가새골조 실험체 Hss1 Hss5unclassified

Seismic Behavior of Non-Seismic Concentrically Braced Frames with Shared Shear tab

Yeom¹,

Jung²,

Yoo³

2015

Journal of Korean Society of Steel Construction

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-Special concentrically braced frames(SCBFs) have distinctive advantages in considerable seismic performance, which make engineers widely use SCBFs as lateral-load resisting systems in buildings and have researchers to develop SCBFs design methods. Compared to the extensive research of SCBF, comparatively little information is currently available on the performance of SCBFs designed and constructed before the early 1990's. Prior to 1988, concentrically braced frames(CBFs) design requirements were substantially less restrictive. As a result, many existing structures designed to these requirements may not ensure ductility and pose a significant concern in current buildings. In this study, these older frames are referred as non-seismic braced frames(NCBFs). In order to investigate the seismic behavior of NCBFs, finite-element(FE) models of SCBF and NCBF were suggested and verified using case investigation of NCBF conducted on the University of Washington. Using these models, the seismic behavior of NCBF with shared welding shear tab, which is the representative of the types of connections, was established and compared with the seismic performance of SCBF. Keywords -Non-Seismic concentrically braced frames, Special concentrically braced frames, Finite element analysis, Seismic behavior

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“…The braced frames provide energy consumption under the effect of big lateral loadings with changing direction by pressure-wrenching and by flowing under tensile loads [1,2]. Also there are some analytical and experimental studies related to concentrically and eccentrically steel braced frames in the literature [3][4][5][6][7][8][9][10][11][12][13][14]. In this study pushover analysis of the 1/3 scaled 1 reinforced concrete frame and 1/3 scaled 4 strengthened reinforced concrete frames with internal eccentrically steel braced frames were conducted by SAP2000 program.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of Strengthened RC Frames with Eccentric Steel Braced Frames

Kamanli

Ünal

2017

E3S Web Conf.

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Abstract. After devastating earthquakes in recent years, strengthening of reinforced concrete buildings became an important research topic. Reinforced concrete buildings can be strengthened by steel braced frames. These steel braced frames may be made of concentrically or eccentrically indicated in Turkish Earthquake Code 2007. In this study pushover analysis of the 1/3 scaled 1 reinforced concrete frame and 1/3 scaled 4 strengthened reinforced concrete frames with internal eccentric steel braced frames were conducted by SAP2000 program. According to the results of the analyses conducted, load-displacement curves of the specimens were compared and evaluated. Adding eccentric steel braces to the bare frame decreased the story drift, and significantly increased strength, stiffness and energy dissipation capacity. In this strengthening method lateral load carrying capacity, stiffness and dissipated energy of the structure can be increased.

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A balanced design procedure for special concentrically braced frame connections

Cited by 143 publications

References 7 publications

Performance-based plastic design method for steel concentric braced frames

Performance-based plastic design method for steel concentric braced frames

Seismic Behavior of Non-Seismic Concentrically Braced Frames with Shared Shear tab

Behaviour of Strengthened RC Frames with Eccentric Steel Braced Frames

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