Overall and Step Iterative Algorithm of Cable Force for Multi-Rib Steel Truss Arch Bridge in Procedure of Rib Segments Assembling

Shui Xing Zhou; Min Zhang; Wei Feng Tian; Jun Xu

doi:10.4028/www.scientific.net/AMR.255-260.1052

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 255-260Overall and Step Iterative Algorithm of Cable...

Overall and Step Iterative Algorithm of Cable Force for Multi-Rib Steel Truss Arch Bridge in Procedure of Rib Segments Assembling

Abstract:

Taking deformation of the main arch under dead load as the arch alignment control target, the overall cable force and pre-camber of multi-rib arch were calculated by zero-order optimization method. According to the installation sequences of arch segments, taking deviation of cable tower, cables in one-time tensioning method and the section stress of arch chords as constraint conditions, the cable force and pre-camber for every segment were calculated by iterative method. This method is applied to the erection of a 400m steel truss arch bridge with three ribs, the calculated values of cable force are anastomosed with the measured ones, and the precision of arch alignment is high.

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Periodical:

Advanced Materials Research (Volumes 255-260)

Pages:

1052-1055

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.255-260.1052

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Online since:

May 2011

Authors:

Shui Xing Zhou, Min Zhang, Wei Feng Tian, Jun Xu

Keywords:

Cable Force, Multi-Rib Steel Truss Arch Bridge, One-Time Tensioning Cable Method, Overall and Step Iterative Algorithm, Zero-Order Optimization Method

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References

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