New moment-rotation equation for welded steel beam-to-column connections

Soleimani, Ehsan; Behnamfar, Farhad

doi:10.1007/s13296-017-6003-y

Cited by 5 publications

(2 citation statements)

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“…The moment‐rotation relation of these retrofitted saddle connections was proposed by Soleimani and Behnamfar. [ 14 ] Moghaddam and Sadrara [ 15 ] proposed five retrofitting methods to improve the mechanical characteristics of saddle connections. The proposed methods successfully prevented premature fracture.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical evaluation of the mechanical characteristics of semi‐rigid saddle connections

Moghaddam

Sadrara

2022

Structural Design Tall Build

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Saddle connections are semi-rigid connections that are widely used in Iran. Many existing buildings contain this type of connection. The present study conducted fullscale experiments and used extensive numerical modeling to study the mechanical characteristics of saddle connections. The mechanical characteristics examined were the moment-transfer mechanism, initial stiffness, yield moment, maximum moment, and fracture rotation. The configuration and dimensions of the experimental and numerical specimens were chosen to be similar to those of saddle connections in existing buildings. A parametric study was conducted to determine the factors affecting the mechanical characteristics of these connections. It was shown that the conventional method used to design saddle connections failed to predict the correct stress distribution. Empirical formulas were provided for predicting these mechanical characteristics and it was shown that the proposed expressions could predict the pertinent parameters accurately.

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Section: Introductionmentioning

confidence: 99%

Experimental and numerical evaluation of the mechanical characteristics of semi‐rigid saddle connections

Moghaddam

Sadrara

2022

Structural Design Tall Build

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“…Instead, it is possible to represent each component contribution, along with complex interactions among the connection's components, by using detailed finite element models. A detailed finite element approach has high accuracy in simulating the complex M-ϕ curve of connections [29][30][31][32]. Nevertheless, this method is computationally intensive and time-consuming.…”

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confidence: 99%

Hybrid Krill Herd-ANN Model for Prediction Strength and Stiffness of Bolted Connections

et al. 2021

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The behavior of beam-to-column connections significantly influences the stability, strength, and stiffness of steel structures. This is particularly important in extreme non-elastic responses, i.e., earthquakes, and sudden column removal, as the fluctuation in strength and stiffness affects both supply and demand. Accordingly, it is essential to accurately estimate the strength and stiffness of connections in the analysis of and design procedures for steel structures. Beginning with the state-of-the-art, the capacity of three available component-based mechanical models to estimate the complex mechanical properties of top- and seat-angle connections with double-web angles (TSACWs), with variable parameters, were investigated. Subsequently, a novel hybrid krill herd algorithm-artificial neural network (KHA-ANN) model was proposed to acquire an informational model from the available experimental dataset. Using several statistical metrics, including the corresponding coefficient of variation (CoV), correlation coefficient (R), and the correlation coefficient provided by the Taylor diagram, this study revealed that the krill herd-ANN model achieved the most reliable predictive accuracy for the strength and stiffness of top- and seat-angle connections with double web angles.

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A Hybrid Particle Swarm Optimization and Genetic Algorithm for Model Updating of A Pier-Type Structure Using Experimental Modal Analysis

et al. 2020

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New moment-rotation equation for welded steel beam-to-column connections

Cited by 5 publications

References 1 publication

Experimental and numerical evaluation of the mechanical characteristics of semi‐rigid saddle connections

Experimental and numerical evaluation of the mechanical characteristics of semi‐rigid saddle connections

Hybrid Krill Herd-ANN Model for Prediction Strength and Stiffness of Bolted Connections

A Hybrid Particle Swarm Optimization and Genetic Algorithm for Model Updating of A Pier-Type Structure Using Experimental Modal Analysis

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