Forward Algorithm for the construction control of cable-stayed bridges built on temporary supports

被引:34
作者
Lozano-Galant, J. A. [1 ]
Paya-Zaforteza, I. [2 ]
Xu, D. [3 ]
Turmo, J. [4 ]
机构
[1] Univ Castilla La Mancha, Dept Civil Engn, E-13071 Ciudad Real, Spain
[2] Univ Politecn Valencia, Inst Ciencia & Tecnol Hormigan ICITECH, Dept Ingn Construcc & Proyectos Ingn Civil, Valencia 46023, Spain
[3] Tongji Univ, Dept Bridge Engn, Shanghai 200092, Peoples R China
[4] Univ Politecn Cataluna, BarcelonaTech, Dept Construct Engn, Baracaldo 08034, Spain
关键词
Cable-stayed bridge; Construction control; Temporary supports erection method; Forward modeling; Iterative process; STATIC ANALYSIS; OPTIMIZATION; DESIGN; SHAPE;
D O I
10.1016/j.engstruct.2012.02.022
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
Traditionally the construction process of cable-stayed bridges is modeled according to the backward approach, as its calculation is much easier using an elastic analysis. In this approach the bridge is disassembled according to the opposite sequence of events which occur during its erection. The main trade off of the backward approach is that time-dependent phenomena, such as creep, shrinkage or cable relaxation, cannot be directly computed as the analysis is performed according to the reversed time direction. In this paper the Forward Algorithm (FA) that is based on the forward approach is formally presented. This procedure has been applied to the temporary supports erection method as no specific investigation of this erection technique has been found by the authors. The FA has the following advantages: (1) Modifications in design and/or tensioning strategy can be easily computed. (2) The effect of time-dependent phenomena can be efficiently included into the calculation of the construction process of the bridge. (3) Differences between the temperatures in the structural elements assumed when doing the structural analysis of the bridge and the real ones when built can be calculated without the need of separate models. (4) The stresses in the mono-strands when the strand by strand prestressing technique is used are obtained directly. (5) Stay and strand elongation, which are very useful to control the prestressing operations, can be also easily computed. All these features make the FA an efficient procedure to control the construction process on site, increasing safety during construction and decreasing construction time. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:119 / 130
页数:12
相关论文
共 34 条
[1]   Design optimization and dynamic analysis of a tensegrity-based footbridge [J].
Ali, Nizar Bel Hadj ;
Rhode-Barbarigos, Landolf ;
Albi, Alberto A. Pascual ;
Smith, Ian F. C. .
ENGINEERING STRUCTURES, 2010, 32 (11) :3650-3659
[2]   A SUBSTRUCTURE FRONTAL TECHNIQUE FOR CANTILEVER ERECTION ANALYSIS OF CABLE-STAYED BRIDGES [J].
BEHIN, Z ;
MURRAY, DW .
COMPUTERS & STRUCTURES, 1992, 42 (02) :145-157
[3]  
Behin Z., 1990, THESIS U ALBERTA EDM
[4]   NONLINEAR-ANALYSIS OF CABLE-STAYED BRIDGE BY FINITE STRIP METHOD [J].
CHEUNG, MS ;
LI, WC ;
JAEGER, LG .
COMPUTERS & STRUCTURES, 1988, 29 (04) :687-692
[5]  
Chio G, 2000, THESIS U POLITECNICA
[6]   Analysis of concrete cable-stayed bridges for creep, shrinkage and relaxation effects [J].
Cluley, NC ;
Shepherd, R .
COMPUTERS & STRUCTURES, 1996, 58 (02) :337-350
[7]  
Counasse C, 2000, EXTRAIT ANN TRAVAUX, P45
[8]   Nonlinear time-dependent analysis of segmentally constructed structures [J].
Cruz, PJS ;
Mari, AR ;
Roca, P .
JOURNAL OF STRUCTURAL ENGINEERING, 1998, 124 (03) :278-287
[9]   Design and shape optimization of a new type of hollow concrete masonry block using the finite element method [J].
del Coz Diaz, J. J. ;
Garcia Nieto, P. J. ;
Alvarez Rabanal, F. P. ;
Lozano Martinez-Luengas, A. .
ENGINEERING STRUCTURES, 2011, 33 (01) :1-9
[10]  
Fan LC, 1992, J CHONGQING I T, P1