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

Abstract:

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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.

Info:

Periodical:

Advanced Materials Research (Volumes 255-260)

Edited by:

Jingying Zhao

Pages:

1052-1055

DOI:

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

Citation:

S. X. Zhou et al., "Overall and Step Iterative Algorithm of Cable Force for Multi-Rib Steel Truss Arch Bridge in Procedure of Rib Segments Assembling", Advanced Materials Research, Vols. 255-260, pp. 1052-1055, 2011

Online since:

May 2011

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Price:

$35.00

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