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The Structural Engineer, Volume 50, Issue 5, 1972
The graphical procedure presented in this paper is an extension of the linearized deflexion theory for suspension bridge analysis which brings the theory more into the region of preliminary design. By construction of graphical models to represent equations derived by a reformulation of the classical deflexion theory approximate values of deflexion, bending moment and hanger load distribution across the span can be quickly calculated for all typical loading cases.
Professor J. Heyman: There is an enormous amount of new material in this paper and it is going to take us a long time to assimilate it. I would like to make one or two broad comments and not discuss the detailed results. One of the most interesting features is the use of realistic flexible joints rather than the rigid joints that were used in the previous tests. If I can summarize the test results, the beam behaviour using the flexible joints accorded pretty well with the predictions of the Joint Committee’s report, the behaviour of the columns was not so close, but the ultimate collapse loads reached by the columns were certainly on the right side-the Joint Committee’s method was conservative. All of these observations, while differing in degree, were in fact results repeated from the previous test with the rigid joints.
We wish to compliment the author for his thorough analytical and experimental investigation.