Influence of masonry infill on the seismic performance of concentrically braced frames

Jazany, Roohollah Ahmady; Hajirasouliha, Iman; Farshchi, Hamidreza

doi:10.1016/j.jcsr.2013.05.009

Cited by 20 publications

(15 citation statements)

References 15 publications

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“…The cyclic lateral load tests on CBFs conducted by Ahmady Jazany et al (2013) are used to validate detailed FE models in this study. The test specimens consisted of a concentrically braced steel frame without masonry infill (CBF) and a concentrically braced steel frame with masonry infill (CBFI), which were built at half-scale.…”

Section: Reference Experimental Programmementioning

confidence: 99%

“…Based on Ahmady Jazany et al (2013) experimental results, the first yielding in the CBF test specimen occurred in the bracing elements at storey drift angle of 0.008 rad. The yielding started between the corner and mid-height gusset plates as shown in Fig 4(b), which was followed by diagonal yield lines on the gusset plates.…”

Section: Failure Modes Of the Reference Testsmentioning

confidence: 99%

“…Ahmady Jazany et al (2013) observations showed that the infill-frame interaction in the CBFI specimen considerably increased the strain demands of column elements and gusset plate connections. The first yielding was observed in the steel columns at storey drift angle of 6 0.008 rad.…”

Section: Failure Modes Of the Reference Testsmentioning

confidence: 99%

“…The steel elements and fillet welds were modelled using the 8-node 3D solid element SOLID45. The material properties were obtained from the measured stress-strain relationships reported by Ahmady Jazany et al (2013).…”

Section: Experimentally Validated Fe Modelsmentioning

confidence: 99%

“…However, the results of Daryan et al (2009) study were based on the superposition of two distinct experimental tests on a CBF and a masonry infill wall and, therefore, could not capture the actual frame-infill interaction. In a more recent study, Ahmady Jazany et al (2013) conducted a series of experimental tests to investigate the seismic performance of half-scale CBFs with masonry infill. They showed that the masonry infill can increase the lateral load-bearing capacity and the lateral stiffness of the frames by more than 40%.…”

Section: Introductionmentioning

confidence: 99%

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Analytical Study of the Seismic Performance of Steel-Braced Frames with Masonry Infill

et al. 2016

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Special Concentrically Braced Frames (CBFs) are widely used as efficient lateral-load resisting systems in seismic regions. In this study, experimentally validated FE models are used to investigate the effects of masonry infill and gusset-plate configuration on the seismic performance of CBFs. It is shown that the presence of masonry infill can increase the initial stiffness and ultimate strength of CBFs by up to 35% and 52%, respectively. However, the frame-infill interaction imposes high plastic strain demands at the horizontal re-entrant corner of gusset plate connections, which may lead to premature failure of fillet welds under strong earthquakes. While using tapered gusset plates can significantly increase the fracture potential at fillet welds, gusset plates with elliptical clearance of eight times the plate thickness can lead to up to 54% lower equivalent plastic strain demands at both gusset plate connections and brace elements. While the effects of masonry infill are usually ignored in the seismic design process, the results highlight the importance of considering those effects in the seismic design of CBF elements and gusset plate connections.

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Section: Reference Experimental Programmementioning

confidence: 99%

Section: Failure Modes Of the Reference Testsmentioning

confidence: 99%

Section: Failure Modes Of the Reference Testsmentioning

confidence: 99%

Section: Experimentally Validated Fe Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analytical Study of the Seismic Performance of Steel-Braced Frames with Masonry Infill

et al. 2016

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More adequate seismic design force pattern for yielding structures considering structural and ground motion uncertainties effects

Ganjavi

Gholamrezatabar²

2018

Structural Design Tall Build

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Summary In the present paper, a new algorithm to achieve optimum lateral load pattern for inelastic steel shear‐building structures is proposed and the efficiency of the proposed algorithm in terms of convergence speed and stability is investigated. Then, by conducting this algorithm on 28,800 elastic and inelastic steel shear‐building structures having different dynamic characteristics subjected to 40 design compatible earthquakes, a new seismic force pattern incorporating higher modes effect is proposed, and the adequacy of the proposed load pattern is parametrically investigated on the basis of the concepts of structural weight and dissipated energy and cumulative damage index. Through conducting numerous nonlinear dynamic analyses, the effects of uncertainties in story shear strength, structural fundamental period, and damping ratio by using the Monte Carlo simulation are parametrically investigated. Result indicates that optimum structures are in general more sensitive to the random variation of fundamental period and story lateral strength, whereas up to 40% of damping ratio variation does not affect the seismic performance of the optimum design frames. Finally, compared with recently proposed optimum structures without consideration of higher modes and code‐complaint design structures, the proposed mean optimum designed buildings of this study exhibit up to 42% less cumulative damage under the design earthquakes.

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Performance of masonry infills in reinforced concrete moment resisting frames under bidirectional seismic excitations

Najafgholipour,

Behrouzi,

Hassanli

2023

Bull Earthquake Eng

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Influence of masonry infill on the seismic performance of concentrically braced frames

Cited by 20 publications

References 15 publications

Analytical Study of the Seismic Performance of Steel-Braced Frames with Masonry Infill

Analytical Study of the Seismic Performance of Steel-Braced Frames with Masonry Infill

More adequate seismic design force pattern for yielding structures considering structural and ground motion uncertainties effects

Performance of masonry infills in reinforced concrete moment resisting frames under bidirectional seismic excitations

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