A New multiconstraint method for determining the optimal cable stresses in cable-stayed bridges

B. Asgari, Siti Aminah Osman, A. Adnan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Cable-stayed bridges are one of the most popular types of long-span bridges. The structural behaviour of cable-stayed bridges is sensitive to the load distribution between the girder, pylons, and cables. The determination of pretensioning cable stresses is critical in the cable-stayed bridge design procedure. By finding the optimum stresses in cables, the load and moment distribution of the bridge can be improved. In recent years, different research works have studied iterative and modern methods to find optimum stresses of cables. However, most of the proposed methods have limitations in optimising the structural performance of cable-stayed bridges. This paper presents a multiconstraint optimisation method to specify the optimum cable forces in cable-stayed bridges. The proposed optimisation method produces less bending moments and stresses in the bridge members and requires shorter simulation time than other proposed methods. The results of comparative study show that the proposed method is more successful in restricting the deck and pylon displacements and providing uniform deck moment distribution than unit load method (ULM). The final design of cable-stayed bridges can be optimised considerably through proposed multiconstraint optimisation method.

Original languageEnglish
Article number503016
JournalScientific World Journal
Volume2014
DOIs
Publication statusPublished - 2014

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Cable stayed bridges
cable
Cables
Bending moments
method
Loads (forces)
research work
comparative study

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Environmental Science(all)
  • Medicine(all)

Cite this

A New multiconstraint method for determining the optimal cable stresses in cable-stayed bridges. / Asgari, B.; Osman, Siti Aminah; Adnan, A.

In: Scientific World Journal, Vol. 2014, 503016, 2014.

Research output: Contribution to journalArticle

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