The Structural Engineer > Archive > Volume 18 (1940) > Issues > Issue 12 > The Design of Multi-Span Arch Bridges on Elastic Piers
Name of File 2575-18-12.pdf cached at 18/12/2017 09:10:40 - with 16 pages. pdfPath: E:\k9.istructe.org\CMS\webtest\files\3b\3bf9786d-1f96-438b-8397-316b71e5a2eb.pdf. thumbPath: E:\k9.istructe.org\CMS\webtest\files\pdfthumbs\3bf9786d-1f96-438b-8397-316b71e5a2eb_1.png. objDoc: 1 - True. objPreview.Log: . strFileName: 3bf9786d-1f96-438b-8397-316b71e5a2eb_1.png

Members/subscribers must be logged in to view this article

The Design of Multi-Span Arch Bridges on Elastic Piers

The subject of design of multi-span arch bridges has not received much attention in the text books. Space is not available for more than a few references. Hool derives equations for a two span fixed ended structure, and uses these for more than two spans by a process of successive approximations, though he claims that the method is not long. Spofford derives general equations for a fixed ended unsymmetrical structure of variable section with an indefinite number of spans, and gives an example of a three span design. His equations are general, and are similar in principle to those given in this paper, though they are of a very complicated appearance. Hayden gives equations and an example of the design of a two span portal frame with hinged ends. Parcell and Maney give an example of a four span fixed ended portal frame based on the slope deflection method. A very fully worked out method derived from the theorem of strain energy is given in a paper by Frankland. This is, however, not generally available in this country, and it is also, perhaps, rather too mathematical for most engineers. The methods of Hardy-Cross and Southwell will be familiar. J.J. Leeming

Author(s): Leeming, J J

Keywords: arch bridges;design;piers;multiple spans