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author:

Li, J.-H. (Li, J.-H..) [1] | Feng, D.-M. (Feng, D.-M..) [2] | Li, A.-Q. (Li, A.-Q..) [3] | Yuan, H.-H. (Yuan, H.-H..) [4]

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Scopus CSCD

Abstract:

A systematic and generic procedure for the determination of the reasonable finished state of self-anchored suspension bridges is proposed, the realization of which is mainly through adjustment of the hanger tensions. The initial hanger tensions are first obtained through an iterative analysis by combining the girder-tower-only finite element (FE) model with the analytical program for shape finding of the spatial cable system. These initial hanger tensions, together with the corresponding cable coordinates and internal forces, are then included into the FE model of the total bridge system, the nonlinear analysis of which involves the optimization technique. Calculations are repeated until the optimization algorithm converges to the most optimal hanger tensions (i.e. the desired reasonable finished bridge state). The “temperature rigid arm” is introduced to offset the unavoidable initial deformations of the girder and tower, which are due to the huge axial forces originated from the main cable. Moreover, by changing the stiffness coefficient K in the girder-tower-only FE model, the stiffness proportion of the main girder, the tower or the cable subsystem in the whole structural system could be adjusted according to the design intentions. The effectiveness of the proposed method is examined and demonstrated by one simple tutorial example and one self-anchored suspension bridge. © 2016, Central South University Press and Springer-Verlag Berlin Heidelberg.

Keyword:

finite element; nonlinear relation; optimization algorithm; reasonable finished bridge state; self-anchored suspension bridge

Community:

  • [ 1 ] [Li, J.-H.]College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
  • [ 2 ] [Feng, D.-M.]Department of Civil Engineering and Engineering Mechanics, Columbia University, New York, NY, 10027, United States
  • [ 3 ] [Li, A.-Q.]College of Civil Engineering, Southeast University, Nanjing, 210096, China
  • [ 4 ] [Yuan, H.-H.]College of Civil Engineering, Fuzhou University, Fuzhou, 350116, China

Reprint 's Address:

  • [Feng, D.-M.]Department of Civil Engineering and Engineering Mechanics, Columbia UniversityUnited States

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Source :

Journal of Central South University

ISSN: 2095-2899

Year: 2016

Issue: 1

Volume: 23

Page: 209-219

0 . 6 0 1

JCR@2016

3 . 7 0 0

JCR@2023

ESI HC Threshold:324

JCR Journal Grade:3

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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