International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 10 Issue: 06 | Jun 2023
p-ISSN: 2395-0072
www.irjet.net
Patch loading resistance of curved and straight steel plate girders with stiffened cell flanges P Muhammed Ajmal 1, Sadic Azeez2 1Student, Dept.of Civil Engineering, ICET Mulavoor, Kerala,India 2Asst.Professor, Dept.of Civil Engineering, ICET Mulavoor, Kerala,India
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Abstract -The purpose of this article is to investigate the patch loading resistance of steel plate girders with trapezoidal, rectangular, and triangular hollow cell flanges in curve and straight configurations. When subjected to concentrated loading, this geometrical configuration significantly boosts the resistance of the web plates. The patch loading resistance is investigated in this work using the programme ANSYS 2022- analyses that take into account substantial displacements, elastoplastic material behaviour, initial geometric flaws, and an anticipated pattern of residual stress distribution. The numerical model is evaluated against published experimental results. Following that, a parametric analysis is carried out to explore the impact of various geometric characteristics such as loading position, different geometric shapes with infill, and so on..The results show that the use of trapezoidal cell flanges enhances the resistance of steel plate girders to patch loading in straight and curve
1.I NTRODUCTION Steel bridges are often fabricated using girders with slender webs with good flexural and shear strengths to cover long spans and to be capable to withstand heavy vertical loads during service. Some bridges are erected using the incremental launching method, the installation of the bridge is critical due to the concentrated support reaction transferred to the thin webs that may cause premature failure of the bridge girder. To prevent buckling related failures and to increase the resistance to concentrated loads the following strategies are employed: to increase the web thickness, to use a longitudinal stiffener with open or closed section adjacent to the loaded flange, to add adequately spaced vertical stiffeners, or to reinforce the loaded flange with a triangular cell flange. From the results obtained in these works, it was found that adding triangular cells to the patch loaded flanges enhances both the critical buckling load and the corresponding resistance of steel plate girders. Comparing the performance of delta stiffened girders to the performance of longitudinally stiffened girders, which may be compared in terms of weight and welding investment, triangular cell flanges are more effective © 2023, IRJET
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when it comes to increasing the capacity to withstand concentrated loads caused by support reactions in steel bridge girders incrementally launched. 1.1Objectives and scopes The main objective of the study is the patch loading resistance of steel plate girders and finding the optimum thickness, patch loading distance different shapes performance in comparison with conventional reinforcement as per IS code. the output results like ultimate deflection, ultimate load, percentage of improvement in strength are evaluate and compared. This study is focused on the analyze of the patch load resistance of curved and inclined steel plate girders to develop and reduce web buckling with stiffened cell flanges. This study mainly focusing on static analysis using patching loading testing in girders against buckling using in Ansys software .The models are done by Nonlinear static analysis in Workbench of Ansys (2022).
2. ANALYSIS OF PATCH LOADING RESISTANCE AT DIFFERENT PATCH LOADING LENGTH This chapter is deals with the analysis of patch loading resistance at different patch loading length. Steel plate girders stiffened with triangular cell flanges are modelled. Four models are created using ANSYS software as per the AISC provision. The different models are P 200 , P 250 , P 300 , P 350. Material properties of the beams are Young’s modulus 2 ×105 Mpa, 3, Density 2400 kg/m3 and material properties of steel tube is Young’s modulus 2 ×105 Mpa, Poisson’s ratio 0.3, Density 7850 kg/m3
Note; P -plate load length 2.1 Modelling and loading These steel plate girders are modelled with specific dimensions by changing the patch loading length like P 200 , P250 , P300, P350.
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