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The complete investigation of the effect produced upon the live load stresses in a bridge by the curvature of the track; by the accompanying super-elevation of the outer rail; and by the eccentricity of the center of the track with reference to the axis of the bridge, has not yet, so far as the author is aware, been published. While the solution of this problem involves only well known methods, it is thought that the general formulas, put in a convenient shape for reference, may be practically useful. That the effect referred to is of sufficient magnitude to demand consideration, even when the degree of curvature of the track is small, is made clear by a comparison of the live load stresses in the members of the inner and outer trusses of the bridge, of which Fig. 1 is the strain sheet for the live load. This bridge, which was recently erected under the supervision of the author, is 187½ feet long, with the track on a 3-degree curve, and was designed by the Keystone Bridge Company.
The complete investigation of the effect produced upon the live load stresses in a bridge by the curvature of the track; by the accompanying super-elevation of the outer rail; and by the eccentricity of the center of the track with reference to the axis of the bridge, has not yet, so far as the author is aware, been published. While the solution of this problem involves only well known methods, it is thought that the general formulas, put in a convenient shape for reference, may be practically useful. That the effect referred to is of sufficient magnitude to demand consideration, even when the degree of curvature of the track is small, is made clear by a comparison of the live load stresses in the members of the inner and outer trusses of the bridge, of which Fig. 1 is the strain sheet for the live load. This bridge, which was recently erected under the supervision of the author, is 187½ feet long, with the track on a 3-degree curve, and was designed by the Keystone Bridge Company.
Stresses in Railway Bridges on Curves
Baldwin, Ward (author)
Transactions of the American Society of Civil Engineers ; 25 ; 459-492
2021-01-01
341891-01-01 pages
Article (Journal)
Electronic Resource
Unknown
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