Abstract
Abstract The study presents the application of FEM numerical analysis, performed with the Abaqus software [1], for theoretical estimation of the ultimate and critical shear and flexural resistance of corrugated web girders reinforced with tension diagonal braces. In FEM numerical models, different web failure modes, observed in physical experimental research into SIN girders were taken into consideration [2]. That was done depending on the inclination angle β of tension diagonal braces and the web thickness. FEM analysis of the shear resistance of corrugated web girders was performed using numerical models of girders. The webs, made from corrugated sheet, had the heights of 500, 1000 and 1500 mm, and the thicknesses of 2; 2.5 and 3 mm. Global shear and flexural load-displacement paths (LDPs) were determined for girder numerical models. In shear LDPs, the shares of cooperation between the corrugated web and tension diagonal braces were separated. For each numerical model, the estimates of the share of the corrugated web and diagonal braces in the shear resistance of SIN girders were produced. The results of the FEM numerical analysis of the resistance of corrugated web girders reinforced with tension diagonal braces were compared to the results of physical experimental research [2] into the girders of concern, and also with the results of calculations made for unreinforced girders acc. EC3 [19]. Conclusions were drawn and recommendations were produced, which can be applied to the construction and dimensioning of corrugated web girders reinforced with tension diagonal braces. The Abaqus software was adjusted to solve the problems related to the phenomena revealed by the research [2].
Highlights
Girders with corrugated web, 2.0; 2.5 and 3.0 mm in thickness and 330 to 1500 mm in height, are used to obtain a significant self-weight reduction [18]
On the basis of [2], it was demonstrated that tension diagonal braces used in near-support zones of SIN girders significantly increase the shear resistance of the corrugated web, making it possible to adjust the span of SIN girders to the span resulting from pure bending
When SIN girders are used, it is necessary to check the critical shear resistance of the web, which puts a limit on girder resistance
Summary
2.0; 2.5 and 3.0 mm in thickness and 330 to 1500 mm in height, are used to obtain a significant self-weight reduction [18]. On the basis of [2], it was demonstrated that tension diagonal braces used in near-support zones of SIN girders significantly increase the shear resistance of the corrugated web, making it possible to adjust the span of SIN girders to the span resulting from pure bending. The application of the FEM analysis to numerical estimation of shear resistance of corrugated web girders reinforced with tension diagonal braces was presented. Numerical FEM analysis of the shear resistance of corrugated web girders reinforced, in near-support zones, with tension diagonal braces was conducted using nine models. The study provides a comparison of the estimates, produced with the Abaqus software, of the critical and ultimate resistance in the numerical models of girders reinforced with tension diagonal braces in near-support zones, with experimental results, and with the resistance of unreinforced girders calculated acc.
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