Evaluation of the Connection Rigidity on the Vertical Shear Distribution at Beam Section in Steel I Shaped Beams According to the Beam Span Length

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ABDOLLAHZADEH GHOLAMREZA; Naghipor Morteza; Shabanzadeh Ehsan

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Journal: JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING Year:2019 | Volume:6 | Issue:3 (26) Page(s): 17-40

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Title

Evaluation of the Connection Rigidity on the Vertical Shear Distribution at Beam Section in Steel I Shaped Beams According to the Beam Span Length

Author(s)

ABDOLLAHZADEH GHOLAMREZA | Naghipor Morteza | Shabanzadeh Ehsan | Issue Writer Certificate

Keywords

Classical theory of stress distributionQ1

Real stress distributionQ1

Restrain of lateral deformationQ1

Restrain of connection section warpingQ1

Restrain between beam flange and web at connection regionQ1

Abstract

This paper evaluates the effect of I-shaped beams connection rigidity withdifferent span length on vertical force and shear stress distribution inbeam flanges and web at connection section in comparison with classicaltheory of stress distribution. On the other side, according to very littlestudies done in the past it is assumed that parameters such as restrain oflateral deformation, Restrain of connection section warping and restrainbetween beam flange and web at connection region are the main reasonsof unpredictable shear force and stress distribution at the connection section and the contribution of each of these parameters has beeninvestigated. Accordingly, 72 models with different connection rigidity under concentrated static load in mid span have been made for doingparametric study in ANSYS Workbench finite element software. The linearstatic analysis was done on all constructed models. Variable parametersin these research for parametric study include of connection rigidity in thecase of change in the end plate thickness (from 7 to 30 mm), beam span length, restraint or no restraint between beam web and flange and thepresence or absence of Poisson’ s effects. In all models the amount ofshear stress in section height over the section vertical axis in connectionregion and also the devoted contribution from force which goes to flangesand web under the concentrated load on mid span have been calculated. Performed studies have shown that that vertical shear stress distributionin beam to column connection section with moment connection differs a lotfrom what is stated in mechanics of materials equations. Practically theavailable equations in regulations which state that web receives the entirevertical shear and ignore the contribution of flanges are not reliable. Studies also showed that the contribution of the flanges and web atconnecting section from vertical shear force strongly affected by theconnection rigidity and the beam span length. On the other side, theresults express this fact that among desired parameters the existence ofrestraint between flanges and web in all models is the most importantparameter in the differences between the classical and real results andelimination of this parameter in structures can be considered as an idea toimprove the performance of the modern connections.

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APA: Copy

ABDOLLAHZADEH, GHOLAMREZA, Naghipor, Morteza, & Shabanzadeh, Ehsan. (2019). Evaluation of the Connection Rigidity on the Vertical Shear Distribution at Beam Section in Steel I Shaped Beams According to the Beam Span Length. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, 6(3 (26) ), 17-40. SID. https://sid.ir/paper/405903/en

Vancouver: Copy

ABDOLLAHZADEH GHOLAMREZA, Naghipor Morteza, Shabanzadeh Ehsan. Evaluation of the Connection Rigidity on the Vertical Shear Distribution at Beam Section in Steel I Shaped Beams According to the Beam Span Length. JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING[Internet]. 2019;6(3 (26) ):17-40. Available from: https://sid.ir/paper/405903/en

IEEE: Copy

GHOLAMREZA ABDOLLAHZADEH, Morteza Naghipor, and Ehsan Shabanzadeh, “Evaluation of the Connection Rigidity on the Vertical Shear Distribution at Beam Section in Steel I Shaped Beams According to the Beam Span Length,” JOURNAL OF STRUCTURAL AND CONSTRUCTION ENGINEERING, vol. 6, no. 3 (26) , pp. 17–40, 2019, [Online]. Available: https://sid.ir/paper/405903/en

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