Rotational capacity of castellated steel beams

Daryan, Amir Saedi; Sadri, Mohammadreza; Saberi, Hamid; Saberi, Vahid; Moghadas, Ahmad Baleh; Karimlu, Mohammadjavad

doi:10.1002/tal.743

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…Nonlinear Modeling of the sample structures is performed using finite element ABAQUS software. This program has been proved that yields accurate results for seismic analysis of the frame structures [21]. Moreover, the accuracy of the modeling technique use for thermal-mechanical analysis is validated in section 2.3.…”

Section: Numerical Modelingmentioning

confidence: 94%

Collapse assessment of Protected Steel Moment Frame under Post-earthquake Fire

Gerami

Mirzaei

2019

Scientia Iranica

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Postal code: 3513119111, Semnan, Iran Tel: +989125540046 Fax: +982333321005 Biographical notes: Pouria Mirzaei is a PhD student in the field of earthquake engineering in Semnan university of Iran. He has receive his M.Sc. degree from Iran University of science and technology (IUST) in 2012. He is working in a civil engineering company as a consultant engineer. His major specialty relates to fire engineering and modelling of structural systems. Mohsen Gerami is a Professor of civil engineering in Semnan University of Iran. He has received his Ph.D. from Tarbiat Modares University in 2003. His studies cover a wide range of topics in the structural and earthquakes engineering, including dynamic analysis of structures, performance based engineering, near fault ground motion effects and fire engineering. AbstractThis paper investigates the behavior of low-, medium-and high-rise protected steel moment resisting frames under post-earthquake fire through two different methods. In the first method, the pushover analysis is utilized to simulate the response of the sample structures for various target displacements. Then the thermal-mechanical analysis is implemented to evaluate the behavior of the damaged frames under fire, assuming that the fireproofing is delaminated at the end regions of the beams. In the second method, the seismic response of the frames under two sets of the MCE-scaled near and far fault ground motion records is determined employing the time history analysis. In this method, the damage of fireproofing is characterized by the maximum inter-story drift ratio. The results of the study revealed that the method 1 give similar results to the method 2, for most cases. It is also found that for sufficiently large drift demands, the collapse of the frames under post-earthquake fire occurs in side-way mode, while for lower seismic responses, the local failure of beams dominates other failure modes. Moreover, it was found that the reduction of fire resistance time due to the effects of MCE seismic loads ranges 4% to 27% for the considered structures.

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Section: Numerical Modelingmentioning

confidence: 94%

Collapse assessment of Protected Steel Moment Frame under Post-earthquake Fire

Gerami

Mirzaei

2019

Scientia Iranica

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“…For example, Gholizadeh et al studied the local buckling on the web of a simply supported cellular beam, and simulated the ultimate bearing capacity and failure mode of the simply supported cellular beam with a nonlinear finite element (FE) model [29]. Daryan and other scholars studied the performance of lateral torsional buckling and web local buckling of simply supported cellular beams through experiments and the FE method [30]. Martin et al studied the bearing capacity of cellular beams with sinusoidal wave holes [31].…”

Section: Introductionmentioning

confidence: 99%

Structural Behavior of a Fixed-End Arched Cellular Steel Beam without Lateral Support

Ning,

Lu,

et al. 2024

Buildings

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The arched cellular beam has the advantages of both the solid-web arch and the straight beam with web opening, and has become increasingly admired by architects in recent years. In this paper, four arched cellular beam specimens are designed using an orthogonal test method (OTM) with a three-factor and two-level approach. Firstly, the static loading test is carried out to analyze the mechanical response of the arched cellular beam under concentrated load. Then, a numerical analysis based on ABAQUS finite element (FE) software is carried out. The results show that the simulation results agree well with the test results, which indicates the accuracy of the simulation analysis method. Finally, the buckling load of the arched cellular beam under three different loads is calculated using the variable parameter FE analysis. Combined with the range analysis in the OTM, the influence of the target factor on the buckling load of the arched cellular beam is determined. The results show that the order of the factors affecting the out-of-plane elastic buckling is rise–span ratio > web height–thickness ratio > diameter–depth ratio.

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“…An elastic stabilizing device for honeycomb beam which can significantly increase the structural rigidity and greatly increase the structural shear-resistance was proposed (Showkati et al, 2012). The behavior of honeycomb beams with two simply supported ends under moment gradient loading was numerically studied, and the effect of beam and braced lengths on rotational capacity of honeycomb beams was investigated (Daryan et al, 2013). An FE method to investigate the inelastic behavior of honeycomb beams under combined buckling modes was proposed (El-Sawy et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Bending behavior of steel octagon-web beam

Chang

Yang

Tian

et al. 2020

Advances in Structural Engineering

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Due to the improvement of steel properties, many steel structures with attractive appearance emerge unceasingly. In this article, a new structure of steel octagon-web beam which has the similar appearance with honeycomb beam was presented. The mechanical characteristics of steel octagon-web beam under bending loads were analyzed theoretically. Based on the Vierendeel truss theory in deflection calculation of honeycomb beam, the deflection calculation method of steel octagon-web beam which was validated by finite element method was studied. Two parameters affecting deflection of steel octagon-web beam, such as opening type and expansion ratio, were analyzed. A scale model of steel octagon-web beam was manufactured in order to study bending behavior of the structure. The failure patterns of test specimen under four-point bending test are the buckling of deck and web. A nonlinear finite element model of test specimen whose results were compared with test was established by software ABAQUS 2017. The stresses of slabs under ultimate load have reached yield stress, which shows steel octagon-web beam has good flexural performance.

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Rotational capacity of castellated steel beams

Cited by 7 publications

References 7 publications

Collapse assessment of Protected Steel Moment Frame under Post-earthquake Fire

Collapse assessment of Protected Steel Moment Frame under Post-earthquake Fire

Structural Behavior of a Fixed-End Arched Cellular Steel Beam without Lateral Support

Bending behavior of steel octagon-web beam

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