Analytical study of slant end-plate connection subjected to elevated temperatures

Zahmatkesh, Farshad; Osman, Muhammad Khusairi; Talebi, Elnaz; Kueh, Ahmad Beng Hong

doi:10.12989/scs.2014.17.1.047

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…Usually, the thermal elongation (∆L) of the steel beams is very small in the elastic range of material. Zahmatkesh et al [17] demonstrated that the use of slant end-plates instead of conventional (vertical) connections can lead to a dissipation of the generated thermal axial force. Equations 1 to 4 determine the value of axial force (P) in an axially restrained steel beam with slant end-plate connections under various loading conditions.…”

Section: Vertical and Slant End-plate Connections Characteristics At mentioning

confidence: 99%

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Experimental Study on the Performance of Slant End-Plate Connections at Elevated Temperature

Zahmatkesh¹,

Osman²,

Talebi³

et al. 2018

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Axially restrained steel beams exhibit lower structural efficiency when they are subjected to elevated temperature. Thermal expansion is one of the most hazardous conditions such beams could experience throughout their service life. In this regard, using an adequately performing connection can enhance the thermal performance of the beams. This paper, therefore, evaluates experimentally the performance of slant end-plate as a proposed connection for dissipating thermal expansion experienced by the steel beam. In this study, several experimental tests were carried out on two different specimens in terms of scaling and gravity loads to prove the hypothesis and results obtained from a present analytical study. The evaluation of tests and analytical results showed that both outcomes are consistent with each other with comparison ratios between 0.96 and 1.09. In addition, the experimental tests, as well as analytical outcomes, have proven that the slant end-plate connection can successfully reduce the additional thermally induced axial forces via the upward crawling mechanism.

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Section: Vertical and Slant End-plate Connections Characteristics At mentioning

confidence: 99%

“…To validate the results of the analytical method used by Zahmatkesh et al [17], two cases were of interest: i) small-scale and ii) full-scale specimens. Table 1 lists the material properties of steel beams used in this study.…”

Section: Experimental Studymentioning

confidence: 99%

Experimental Study on the Performance of Slant End-Plate Connections at Elevated Temperature

Zahmatkesh¹,

Osman²,

Talebi³

et al. 2018

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“…It was observed that axial restraint force plays a principal role on the steel joint moment capacity, and that there was a clear beam web tension field action near the column in thermally unrestrained cruciform tests. The fundamental development of an analytical model of such a connection when subjected to a non-symmetric gravity load and a temperature increase has been formulated by Zahmatkesh et al (2014b). It was demonstrated from the study that an increase in temperature in the beam with a general vertical bolted connection induces a huge extra axial force that decreases the capability in carrying external gravity loads.…”

Section: Latin American Journal Of Solids and Structures 13 (2016) 13mentioning

confidence: 99%

“…The results from the direct stiffness formulation are first validated by an experimental test for selected cases. To expand study to all cases, results from the direct stiffness method and the modeling using the commercial finite element package, ABAQUS 6.9, are compared with those of analytical equations given by Zahmatkesh et al (2014b).…”

Section: Case Study Descriptionmentioning

confidence: 99%

“…In Figures 17-22, results from three separate methods are given: ABAQUS software modeling, direct stiffness method and analytical method. Here, for verifying the results of two finite element methods (direct stiffness and ABAQUS software modeling), the analytical solutions for equations obtained by Zahmatkesh et al (2014b). are used.…”

Section: Numeric Parameter Studymentioning

confidence: 99%

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Numerical Study on the Structural Performance of Steel Beams with Slant End-plate Connections

Zahmatkesh

Osman

Talebi

et al. 2016

Lat. Am. j. solids struct.

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Thermal effects can be one of the most harmful conditions that any steel structure should expect throughout its service life. To counteract this effect, a new beam, with a capability to dissipate thermally induced axial force by slanting of end-plate connection at both ends, is proposed. The beam was examined in terms of its elastic mechanical behavior under symmetric transverse load in presence of an elevated temperature by means of direct stiffness finite element model. The performance of such connection is defined under two resisting mechanisms; by friction force dissipation between faces of slant connection and by small upward crawling on slant plane. The presented numerical method is relatively easy and useful to evaluate the behavior of the proposed beam of various dimensions at different temperatures. Its applicability is evident through satisfactory results verification with those from experimental, analytical and commercially available finite element software. Based on the good agreement between theoretical and experimental methods, a series of design curves were developed as a safe-practical range for the slant end-plate connections which are depend on the conditions of the connection.

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Moment-rotation-temperature model of semi-rigid cruciform flush endplate connection in fire

Tran

2020

Fire Safety Journal

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Analytical study of slant end-plate connection subjected to elevated temperatures

Cited by 7 publications

References 9 publications

Experimental Study on the Performance of Slant End-Plate Connections at Elevated Temperature

Experimental Study on the Performance of Slant End-Plate Connections at Elevated Temperature

Numerical Study on the Structural Performance of Steel Beams with Slant End-plate Connections

Moment-rotation-temperature model of semi-rigid cruciform flush endplate connection in fire

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