Composed Mathematical-Informational modeling of column-base connections

Abdollahzadeh, Gholamreza; Ghobadi, Farid

doi:10.1590/s1679-78252014000800008

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…The variable Δη shows the path for the subsequent step along the equilibrium path. In 2014, Abdollahzadeh and Ghobadi offered a neural network framework for taking into account the pinching effects in column base connections [23].…”

Section: Nonlinear Hysteretic Modelmentioning

confidence: 99%

Linked mathematical–informational modeling of perforated steel plate shear walls

Abdollahzadeh

Ghobadi

2015

Thin-Walled Structures

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Section: Nonlinear Hysteretic Modelmentioning

confidence: 99%

Linked mathematical–informational modeling of perforated steel plate shear walls

Abdollahzadeh

Ghobadi

2015

Thin-Walled Structures

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“…Abdollahzadeh and Ghobadi offered a mathematical model based on the component method for representing the complex behavior of column‐base connections. Abdollahzadeh and Ghobadi and Abdollahzadeh et al proposed a mathematical model for representing the hysteretic behavior of column‐base connections and end plate beam to column connections, respectively. Abdollahzadeh and Ghobadi offered a linked mathematical–informational modeling of perforated steel plate shear walls.…”

Section: Mechanical and Informational Methodsmentioning

confidence: 99%

“…Abdollahzadeh and Ghobadi [21] and Abdollahzadeh et al [22] proposed a mathematical model for representing the hysteretic behavior of columnbase connections and end plate beam to column connections, respectively. Abdollahzadeh and Ghobadi [23] offered a linked mathematical-informational modeling of perforated steel plate shear walls.…”

Section: Component-based Modeling and Existing Mechanical Modelsmentioning

confidence: 99%

Combination of mechanical and informational modeling to predict hysteresis behavior of I beam‐to‐CFT column connection

Abdollahzadeh

Yapang-Gharavi

Hoseinali-Beygi

2017

Structural Design Tall Build

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Summary The behavior of beam‐to‐column connections is significantly complicated because it depends on the material, nonlinear relationship between different members, and contact of connecting elements. Their hysteretic response exhibits highly inelastic characteristics and continuous variation in stiffness, strength, and ductility. Therefore, accurate hysteretic models of bolted connections are essential to accurate seismic assessment and design. Composed (Hybrid) modeling approach is presented to represent the complex hysteretic behavior of I beam‐to‐concrete‐filled‐tube (CFT) column bolted connection. For the purpose in this study, experimental evaluation of I beam‐to‐CFT column connection with bolted end‐plate under cyclic loading is done. It must be mentioned to make the connection easily applicable practically and also prepare the column flanges continuity, a connection with the bolts penetrated into the CFT column are used since using the stiffeners in hollow sections is not easily applicable. In the composed mechanical–informational modeling framework, the conventional mechanical model is complemented by information‐based model components. Finally, moment–rotation curves of composed model have been compared with experimental results. Comparison showed that the composed model has a good agreement with experimental results. A newly designed specimen for validation purpose of the composed modeling was made and experimented. Composed model was well applied to predict the behavior of new connections. The presented results show that the composed model has a good ability to predict of hysteretic behavior.

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“…In this study, formulating moment–rotation is followed in five steps, and shear and axial loading effect is analyzed whereas sheet bending is not analyzed. It is very important to estimate initial stiffness with moment–rotation response in baseplate connections, supporting frame analysis and designing . Generally, correct modeling of connections behavior, which is shown as moment–rotation curve, has direct influence on column resistance and frame behavior according to the studies of Picard in 1987.…”

Section: Introductionmentioning

confidence: 99%

“…It is very important to estimate initial stiffness with moment-rotation response in baseplate connections, supporting frame analysis and designing. [13][14][15][16][17][18][19] Generally, correct modeling of connections behavior, which is shown as…”

mentioning

confidence: 99%

Experimental and numerical evaluation of rigid column to baseplate connection under cyclic loading

Abdolahzadeh

Shabanian

Tavakol

2019

Structural Design Tall Build

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Summary One of the most important connections in steel structures is column to the baseplate connection. This kind of connection has a complex nature, due to different behaviors of the constituents, including baseplate, grout, foundation, and anchor bolts. Studying the impact of this connection in general behavior of structure seems to be an essential issue, especially during earthquake, which is more likely to be associated with plastic hinge forming. The main goal of this work is to provide a hybrid modeling for describing hysteresis behavior of column to the baseplate connection. Within hybrid modeling, a mechanical model is accomplished by using neural network model components. Our findings reveal that hybrid models are able to show pinched hysteresis complex behavior of baseplate connections. Also, the proposed hybrid developed model is robust and reliable approaches for predicting behaviors of a recent designed connection.

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Composed Mathematical-Informational modeling of column-base connections

Cited by 7 publications

References 14 publications

Linked mathematical–informational modeling of perforated steel plate shear walls

Linked mathematical–informational modeling of perforated steel plate shear walls

Combination of mechanical and informational modeling to predict hysteresis behavior of I beam‐to‐CFT column connection

Experimental and numerical evaluation of rigid column to baseplate connection under cyclic loading

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