A Study on the Determination of the Basic Configuration of the Three Span Continuous Cable-Stayed Girder Bridge With Multiple Cables

Nagai, Masao; Akao, Hiroshi; Sano, Shin-ichiro; Izawa, Mamoru

doi:10.2208/jscej.1985.362_343

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1988

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“…Girder stiffness required with a short side span is slightly smaller than with a longer side span. (5) The range between the maximum and minimum bending moments at a given position on the girder is largest at the centre on the main span or near the abutment on the side span. These bending moment ranges set the limit of the optimisation of the girder stiffness.…”

Section: (4)mentioning

confidence: 99%

A Parametric Study on Cable-Stayed Bridges by the Limit States Design

Nakamura

Wyatt

1988

Doboku Gakkai Ronbunshu

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Cable-stayed bridges with multi-stays have been recently planned and constructed in many countries probably because of aesthetic and economical superiority. It would be generally possible that the girder could become much slender by properly controlled cable prestresses. The system has been designed in this paper by mainly BS 5400, one of the few codes which have introduced the limit states design. The consistently optimised designs have been achieved by Linear Programming in order to compare the various bridge configuration. A simple method has been proposed to estimate the buckling capacity of the girder. The girder stiffness obtained is substantially lower than that of existing bridges. The bridge with multi-cables could have much slender girders than that with few-cables.

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Section: (4)mentioning

confidence: 99%