3rd International Conference on Civil Engineering: Development & Sustainability
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Effect of Crotch Beams on the Behavior of Asymmetrical Continuous Curved Y-Shaped Box Girder Bridge: Finite Element Analysis
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Authors
1Civil Department, Faculty of Engineering, Assiut University.
2Civil Department, Faculty of engineering, Assuit University, Assuit
3Faculty of Engineering, Assiut University, Egypt
4Civil Engineering Department - Faculty of Engineering - Assiut University
Abstract
Supporting curved highway systems with a horizontally curved concrete deck on Y-shaped box girder bridges is a structurally efficient, cost-effective, and visually beautiful solution. Modern roadways sometimes need bridges with bifurcations and horizontally curved alignments. This type of construction may be required for many reasons. The width limits on the bridge plan and location, besides obstructions that could require the design of the intersection of the sub-structure in the bifurcation zone are all factors to consider. The horizontally curved Y-shaped box girder bridge has recently gained popularity in contemporary highway networks and large cities. In such a system, crotch beams are essential to connect the main bridge to the ramp to resist interaction between the main bridge and ramp elements. Although continuous Y-shaped composite box girder bridges have several benefits, estimating the load distribution, internal straining action, deformation, and distortion caused by own weight and moving vehicles across the bridges can be complex. Multiple studies were conducted to assess and comprehend the behavior of various types of box-girder bridges; however, the studies of the behavior of the Y-shaped box girder bridge remain limited and unevaluated. Considering no particular specifications are provided for the design of curved Y-shaped bridges, engineers need a reliable, accurate, and easy way to determine the structure's response under vehicular loads. This paper presents a finite element analysis for investigating the effect of crotch beams on the overall behavior of Y-shaped RC box girder bridges under various loading conditions.
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