State-of-the-art review on the behaviour of T-stubs and prying action

Kombate, Tchabremane Jean de la Croix; Taşkin, Kıvanç

doi:10.1016/j.jcsr.2022.107203

Cited by 10 publications

(3 citation statements)

References 57 publications

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“…Therefore, it could be deduced a thicker cruciform stub would have a less prying force effect, which follows the pattern in classic T‐stubs. [ 44 ]…”

Section: Fe Modelsmentioning

confidence: 99%

Tensile behavior of cruciform stubs with four bolts per row

Wang

et al. 2022

Structural Design Tall Build

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The stiffened top-and-seat angle connection is widely used in earthquake-prone areas, and additional tensile bolts on angles' column leg effectively improve its bending behavior. However, such design and construction are not governed by any regulations. It is urgent to figure out the mechanical behavior and develop accurate theoretical methods. Based on the component method, this paper first conducted an experimental study on the extracted cruciform stubs with four bolts per row. It compared the tensile properties and damage modes for different thicknesses. After that, the further parametric analysis compared the impact of stub thickness, bolt arrangement, and whether or not the bolt was pretensioned after validation. Stub thickness and bolt gauge were observed with a greater impact than the bolt distance on the plastic resistance. Furthermore, a prediction model for the plastic resistance of the cruciform stub with four bolts per row is proposed by integrating approaches for classic stiffened and unstiffened angles.

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“…Therefore, it could be deduced a thicker cruciform stub would have a less prying force effect, which follows the pattern in classic T‐stubs. [ 44 ]…”

Section: Fe Modelsmentioning

confidence: 99%

Tensile behavior of cruciform stubs with four bolts per row

Wang

et al. 2022

Structural Design Tall Build

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“…The steel connection between beams and columns plays a critical role in transmitting various forces such as moment, shear force, axial force, and torque in a steel framework. It is crucial to maintain the integrity and flexibility of these connections to safeguard against both disproportionate and gradual structural failure, as emphasized by Khandelwal et al [1] Connections are also essential for ensuring the stability and safety of steel structures, as highlighted by Kombate et al [2]. For instance, a significant portion of failures in steel structures can be attributed to problems with connections, while the occurrences of failures in structural members are relatively rare [3].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Structural Resilience: Exploring the Novel Sleeve Method for Steel T-Stub Connections

Atar,

Çete

2024

Fırat Üniversitesi Mühendislik Bilimleri Dergisi

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A new sleeve device has been introduced with the aim of enhancing the performance of steel structures under extreme loading conditions. Previous research has primarily focused on numerical simulations of this sleeve's application, emphasizing the need for further investigation to validate its effectiveness. This research paper presents a numerical analysis that explores how the sleeve device influences the deformation capacity and strength of a bolt up to the point of failure. The study involved the use of a T-stub connection with multiple sleeves, each featuring different geometric parameters. To assess the impact on strength and deformation capacity, a comparison was drawn between these findings and the behavior of a T-stub bolted connection without using the sleeve. In addition, Finite Element (FE) models were employed for additional parametric studies. The test outcomes demonstrated a substantial increase in the deformability of the bolted connection when utilizing the sleeve device, all the while preserving the strength and initial stiffness of the bolts. This proposed sleeve method in the study significantly enhances the connection's capacity by delaying bolt failure.

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“…To determine the full force-displacement curve of bolted connections, Fernandez-Ceniceros [65][66][67] has conducted extensive studies. Precise estimation of link behavior was achieved using the hybridization of FE modeling with soft-computing approaches [68].…”

Section: Introductionmentioning

confidence: 99%

Assessing Effectiveness of Shape Memory Alloys on the Response of Bolted T-Stub Connections Subjected to Cyclic Loading

et al. 2023

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This study presents finite element analysis of double split tee (DST) connections with high-strength steel bolts and coupled split tee sections, to evaluate various cyclic response parameters and elements. The investigation included quantifying connection behavior and hysteretic response, damage indexes, and failure modes. Over 40 specimens were simulated in ABAQUS under cyclic loading, including shape memory alloy (SMA)-built specimens. In the post-analysis phase, the T-stub thickness, the T-stub yield strength, the bolt preload and bolt number, and the stiffener type and stiffener material for the most significant parts of the DST connection were calculated. Simulation results showed that a lower ultimate moment yielded fewer needed stem bolts. The energy dissipation (ED) capacity increased as the horizontal distance between the stem bolts decreased. Additionally, increasing the strength of the bolt and T-stub by 15% resulted in a 3.86% increase in residual displacement (RD) for the bolt and a 1.73% decrease in residual displacement for the T-stub. T-stub stiffeners enhanced ED capacity by 31.7%. SMA materials were vulnerable to mode 1 failure when used in T-stubs, bolts, or stiffeners. However, the use of SMA increased the rate of energy dissipation. Adding stiffeners to the T-stubs altered the failure indexes and improved the pattern of failure modes. In addition, stiffeners decreased the rupture and pressure indexes. As a result, the failure index of a T-stub shifted from brittle failure to ductile failure.

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State-of-the-art review on the behaviour of T-stubs and prying action

Cited by 10 publications

References 57 publications

Tensile behavior of cruciform stubs with four bolts per row

Tensile behavior of cruciform stubs with four bolts per row

Enhancing Structural Resilience: Exploring the Novel Sleeve Method for Steel T-Stub Connections

Assessing Effectiveness of Shape Memory Alloys on the Response of Bolted T-Stub Connections Subjected to Cyclic Loading

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