Abstract
Abstract The study presents the means of increasing resistance of girders with corrugated web by enhancing their shear resistance due to the application of diagonal braces subjected to advantageous tension. Diagonal braces were used in the near-support zones, which increased the shear resistance of the girder. Then, the web carries a greater shear load associated with bending. Experimental investigations on increased shear resistance of girder webs were performed using girders with webs having a height of 500, 1000 and 1500 mm. The shear force divided into the corrugated web and diagonal braces were estimated. Shear load-displacements paths for a corrugated web and diagonal braces were determined. The results of investigations into the resistance of girders reinforced with tension diagonal braces were compared with those for girders without reinforcement and with computations in accordance with Eurocode 3. The paper is the first part of the study. Conclusions were drawn and dimensioning recommendations (part two of the study) for corrugated web girders reinforced with tension diagonal braces were produced. The next part of the study will show the application of FEM numerical analysis to theoretical estimation of the ultimate and critical shear and flexural resistance of corrugated web girders reinforced with tension diagonal braces.
Highlights
Thin-walled corrugated webs are used in I-girders of the SIN type to reduce their mass [19]
The present study shows the way of adjusting the shear resistance of the web to the associated flexural resistance of SIN girders by means of reinforcing the corrugated web, especially in the near-support zones
In girders reinforced with tension diagonal braces, a significant increase was found in the ultimate resistance NuRd,L and in the critical resistance Ncr,L, when compared with unreinforced girders
Summary
Thin-walled corrugated webs are used in I-girders of the SIN type to reduce their mass [19]. Flanges are made from steel with the yield strength of fy = 275MPa or fy = 355MPa. Experimental and theoretical investigations on the resistance of girders with thin-walled corrugated webs were carried out by many authors [1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 13, 14, and 16]. The present study shows the way of adjusting the shear resistance of the web to the associated flexural resistance of SIN girders by means of reinforcing the corrugated web, especially in the near-support zones. Diagonal braces, subjected to advantageous tension, carry considerably higher loads produced by shear forces. Analytic calculations based on Eurocode 3 [20] were performed for the sake of making comparison with the results of tests
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
