Residual Drift Response of SMRFs and BRB Frames in Steel Buildings Designed according to ASCE 7-05

Erochko, Jeffrey; Christopoulos, Constantin; Tremblay, Robert; Choi, Hyo Geun

doi:10.1061/(asce)st.1943-541x.0000296

Cited by 384 publications

(149 citation statements)

References 21 publications

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“…The results of this study are compared to the results of previous research studies concerning experimental or numerical nonlinear dynamic analyses on prototype BRBFs [6,8,9,10,11,12]. Table 6 shows the results of those studies in terms of mean θ s,res,max under FOE, DBE and MCE records, where applicable.…”

Section: Nonlinear Dynamic Analysis Resultsmentioning

confidence: 79%

“…However, they may be susceptible to large residual drifts and damage concentrations due to their low post-yield stiffness [6]. Previous analytical studies have shown that BRBFs designed according to ASCE 7-05 [7] do not meet the immediate occupancy performance level under the design-basis earthquake (10% probability of occurrence in 50 years; denoted as DBE), due to residual drifts greater than 0.5% [8]. Recent experimental and analytical studies on BRBFs [9,10,11] have also shown that residual drifts can be as high as 1.3% under the DBE.…”

Section: Introductionmentioning

confidence: 99%

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Dual seismic-resistant steel frame with high post-yield stiffness energy-dissipative braces for residual drift reduction

Baiguera

Vasdravellis

Karavasilis

2016

Journal of Constructional Steel Research

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Keywords: Dual seismic-resistant steel frame; low-damage steel frame; residual drift mitigation; energy-dissipative brace; replaceable fuse; nonlinear finite element analysis. Abstract.A dual seismic-resistant steel frame, which consists of a moment-resisting frame equipped with high post-yield stiffness energy-dissipative braces, is proposed and numerically evaluated. Replaceable hourglass shape pins made of duplex stainless steel with high postyield stiffness and large energy dissipation and fracture capacity are in series connected to conventional steel braces. Moreover, replaceable fuses are introduced in the beams at the locations where plastic hinges are expected to develop. A performance-based seismic design procedure and appropriate capacity design rules are used to design the dual frame, while its seismic performance is evaluated with advanced numerical simulations using experimentally validated shell-solid finite element models and simplified beam element models. The numerical results show that the dual frame has adequate stiffness and energy dissipation capacity to control peak storey drifts (i.e. non-structural damage), while plastic deformations (i.e. structural damage) are isolated within the replaceable pins of the braces and the beam fuses. In addition, the high post-yield stiffness of the pins, combined with the appreciable elastic deformation capacity of the moment-resisting frame, results in significant reduction of residual storey drifts, which are found to have a mean value of 0.06% under the design earthquake and a mean value of 0.12% under the maximum considered earthquake. These values indicate a superior residual storey drift performance compared to steel frames equipped with buckling restrained braces, and highlight the potential of the proposed dual frame to help steel buildings to return to service within an acceptable short time in the aftermath of a strong earthquake.2

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Section: Nonlinear Dynamic Analysis Resultsmentioning

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Dual seismic-resistant steel frame with high post-yield stiffness energy-dissipative braces for residual drift reduction

Baiguera

Vasdravellis

Karavasilis

2016

Journal of Constructional Steel Research

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“…The use of BRBs as passive dampers in a ductile frame system has been studied extensively by many researchers [11][12][13][14]. Erochko et al [11] studied the comparative residual drift response of special moment-resisting frames (SMRFs) and BRB frames.…”

Section: Introductionmentioning

confidence: 99%

“…Erochko et al [11] studied the comparative residual drift response of special moment-resisting frames (SMRFs) and BRB frames. The two systems showed similar peak drifts and drift concentration factors.…”

Section: Introductionmentioning

confidence: 99%

Cumulative Ductility and Hysteretic Behavior of Small Buckling-Restrained Braces

Sugihardjo

Tavio

2017

Advances in Civil Engineering

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Cumulative ductility is defined as a ratio of total energy to elastic energy which is dissipated by an element of the structural system during cyclic loading. An element of the structural system is categorized hysteretic if the cumulative ductility factor fulfills certain criteria. This study investigated both analytically and experimentally Small Buckling-Restrained Braces (SBRBs). The core of bracings was modeled using Menegotto-Pinto and bilinear functions. The restrained bracing members were in the shape of square hollow steel section. They were made of the assembly of two L-shaped steel sections. From the experimental study on four SBRB specimens, it was proven that the proposed SBRBs have performed relatively stable hysteretic curves up to two percent of strain and the cumulative ductility factor of 199-450. This value is sufficient for the Buckling-Restrained Brace (BRB) elements as elastoplastic structural components. The comparisons of the hysteretic behaviors resulted by SBRB specimens using the MenegottoPinto functions and experiments exhibited good agreements, while the amount of energy dissipated by the SBRB specimens using the bilinear model agreed well with the experimental results. Based on the behavior of the experimental hysteretic, implementing the proposed SBRBs as components in ductile truss system is recommended.

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“…Ruiz-García and Miranda [11] developed a probabilistic seismic demand model for estimating the median and dispersion of maximum residual SDRs at a given seismic intensity. More recently, Erochko et al [12] developed an approximate equation for estimating the residual SDRs in steel moment-resisting frames (MRFs) and buckling-restrained braced frames as a function of the maximum expected SDRs. FEMA P-58 [1] summarizes a simplified procedure for the probabilistic seismic demand analysis of low-and mid-rise buildings.…”

Section: Introductionmentioning

confidence: 99%

Proposed Methodology for Earthquake-Induced Loss Assessment of Instrumented Steel Frame Buildings: Building-Specific and City-Scale Approaches

Hwang¹,

Lignos²

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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Residual Drift Response of SMRFs and BRB Frames in Steel Buildings Designed according to ASCE 7-05

Cited by 384 publications

References 21 publications

Dual seismic-resistant steel frame with high post-yield stiffness energy-dissipative braces for residual drift reduction

Dual seismic-resistant steel frame with high post-yield stiffness energy-dissipative braces for residual drift reduction

Cumulative Ductility and Hysteretic Behavior of Small Buckling-Restrained Braces

Proposed Methodology for Earthquake-Induced Loss Assessment of Instrumented Steel Frame Buildings: Building-Specific and City-Scale Approaches

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