Seismic performance of box-plate, box-plate with UNP, box-plate with L-plate and ordinary rigid beam-to-column moment connections

Shishegaran, Aydin; Amiri, A.; Jafari, Mohammad

doi:10.21595/jve.2017.18716

Cited by 11 publications

(5 citation statements)

References 6 publications

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“…where Y is the dependent variable, X 1 , X 2 , …, X i are the independent variables and β 0 , β 1 , …, β i are linear regression terms that have constant values. e is the estimated error term that is acquired from the constant variance and normal distribution of independent random sampling with mean zero (Shishegaran et al, 2018). The MLR technique calculates β 0 , β 1 , …, β i by using the least square error method in which the best-fitting line is obtained by minimizing the sum of the squares of the errors, as shown in Eq.…”

Section: Mlrmentioning

confidence: 99%

“…Visible regression models are useful tools to predict the performance of structural elements because engineers can use them easily (Shishegaran et al, 2020a). Sev-eral studies have focused on regression models, such as multiple linear regression (MLR), to predict the performance of beam-to-column connections (Islam and Alam, 2013;Shishegaran et al, 2017Shishegaran et al, , 2018. Multiple natural logarithm (Ln) equation regression (MLnER) has been used to predict the performance of an RC panel under an explosive load.…”

Section: Introductionmentioning

confidence: 99%

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Prediction of the load-carrying capacity of reinforced concrete connections under post-earthquake fire

Shishegaran

Moradi

Naghsh

et al. 2021

J. Zhejiang Univ. Sci. A

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Finding out the most effective parameters relating to the resistance of reinforced concrete connections (RCCs) is an important topic in structural engineering. In this study, first, a finite element (FE) model is developed for simulating the performance of RCCs under post-earthquake fire (PEF). Then surrogate models, including multiple linear regression (MLR), multiple natural logarithm (Ln) equation regression (MLnER), gene expression programming (GEP), and an ensemble model, are used to predict the remaining load-carrying capacity of an RCC under PEF. The statistical parameters, error terms, and a novel statistical table are used to evaluate and compare the accuracy of each surrogate model. According to the results, the ratio of the longitudinal reinforcement bars of the column (RLC) has a significant effect on the resistance of an RCC under PEF. Increasing the value of this parameter from 1% to 8% can increase the residual load-carrying capacity of an RCC under PEF by 492.2% when the RCC is exposed to fire at a temperature of 1000 °C. Moreover, based on the results, the ensemble model can predict the residual load-carrying capacity with suitable accuracy. A safety factor of 1.55 should be applied to the results obtained from the ensemble model.

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Section: Mlrmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Prediction of the load-carrying capacity of reinforced concrete connections under post-earthquake fire

Shishegaran

Moradi

Naghsh

et al. 2021

J. Zhejiang Univ. Sci. A

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show abstract

“…Eleven models with varying thicknesses and forms, as well as hysteresis loaded on them, were examined, and contrasted by Shishegaran et al [18]. For every model, various parameters are computed, including the percentage of restrictions, stiffness, strength, position of the plastic hinge, and ductility under cyclic load.…”

Section: Introductionmentioning

confidence: 99%

Test and application of movable steel barrier with grade SB light composite corrugated beam

Zhang,

Bu,

Zhang

et al. 2023

J. meas. eng.

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In this study, movable steel barrier with grade SB light composite corrugated beam is designed, which addresses the problems of the prior central partition belt portable guardrail in terms of easy mobility, local safety, easy construction, and other indications. This guardrail employs explicit algorithms to conduct a dynamic finite element simulation analysis and a real vehicle crash test, and verifies the guardrails' blocking, guiding, and buffering functions in accordance with the SB level collision conditions listed in the Standard for Safety Performance Evaluation of Highway Barriers (JTG B05-01-2013). According to the results, the safety performance of SB grade lightweight composite corrugated beam movable steel guardrail meets the requirements of the Standard for Safety Performance Evaluation of Highway Barriers (JTG B05-01-2013). In addition, the guardrail can be opened for 12 meters in 1 minute and returned to close in 2 minutes. The opening and restoration of the movable guardrail is superior to the previous central divider movable guardrail. This guardrail has been tried for some high-speed and its safety performance has been verified again in actual high-speed vehicle collisions.

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“…where are the stress components for the undamaged material. A lot of work has been done under this concept of mechanical damage [19][20][21][22][23][24][25][26][27][28]. Almost all authors who considered spherical medium in their applications assumed that the body with a spherical cavity avoids the problem of singularity in the center of the sphere.…”

Section: Introductionmentioning

confidence: 99%

Thermal shock problem of a generalized thermoelastic solid sphere affected by mechanical damage and thermal diffusion

Youssef¹

2021

J., eng., them. sci.

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A mathematical model was created in this article, which consists of a thermoelastic, unified, and isotropic rigid sphere subjected to thermal diffusion. Thermal and chemical potential shocks of a diffusive substance have loaded the sphere's bounding structure. The governing equations were established in the form of a theory of generalized thermoelastic diffusion with mechanical damage taken into account. The temperature increment, concentration, pressure, displacement, stress, and chemical potential numerical effects have been expressed in figures with different values of the mechanical damage parameter, thermal relaxation time, and diffusional relaxation time. All the studied functions are significantly affected by the mechanical damage parameter, radial distance, time, thermal, and diffusional relaxation times. In the Lord-Shulman model, heat, diffusion, and mechanical waves spread at finite speeds on the thermoelastic solid sphere.

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Seismic performance of box-plate, box-plate with UNP, box-plate with L-plate and ordinary rigid beam-to-column moment connections

Cited by 11 publications

References 6 publications

Prediction of the load-carrying capacity of reinforced concrete connections under post-earthquake fire

Prediction of the load-carrying capacity of reinforced concrete connections under post-earthquake fire

Test and application of movable steel barrier with grade SB light composite corrugated beam

Thermal shock problem of a generalized thermoelastic solid sphere affected by mechanical damage and thermal diffusion

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