Cable optimization of a long span cable stayed bridge in La Coruña (Spain)

Baldomir, Aitor; Hernández, Santiago; Nieto, Francisco Javier Fernández; Jurado, J. Á.

doi:10.1016/j.advengsoft.2010.05.001

Cited by 56 publications

(12 citation statements)

References 2 publications

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“…Optimalizacija ovješenih mostova analizira se u radovima [2,3], gdje se kao ograničenja navode naprezanja zatega i pomaci rasponskog sklopa mosta. Aydin i dr. [4] proučavali su doprinos genetskog algoritma optimalizaciji projektiranja rasponskog sklopa mosta.…”

Section: Uvodunclassified

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Optimalizacija oblika lučnih mostova s otvorenim nadlučnim sklopom

Pouraminian¹,

Ghaemian

2015

JCE

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Optimalizacija oblika lučnih mostova s otvorenim nadlučnim sklopom U ovom se radu analizira lučni most s otvorenim nadlučnim sklopom. Računalni kod je izveden za izradu modela na temelju geometrijskih podataka, a radi rješavanja problema optimalizacije. U ovom se radu provodi postupak optimalnog projektiranja, a ukupan obujam materijala ugrađenog u donji ustroj mosta usvaja se kao objektivna funkcija. Donji ustroj sadrži stup i armiranobetonski luk. Na kraju je proveden i postupak optimalizacije pomoću algoritma za istovremeno stohastičko predviđanje poremećaja. An open spandrel arch bridge is analysed in this paper. A computer code is written to create a model from geometrical data, so as to solve the optimisation problem. An optimum design procedure is conducted in the paper, and the total material volume of the bridge substructure is adopted as an objective function. The substructure includes the column and the reinforced-concrete arch. Finally, the optimization technique is implemented using the Simultaneous Perturbation Stochastic Approximation algorithm.

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Section: Uvodunclassified

“…Niti u jednom od tih radova ne primjenjuje se algoritam ISPP. Baldomir i dr. [3] koriste optimalizacijski alat MATLAB u svrhu smanjivanja ukupnog obujma čeličnih kabela što se tretira kao objektivna funkcija. Togan i Daloglu [5] primjenjuju postupak za optimalizaciju projekata na temelju pouzdanosti (eng.…”

Section: Uvodunclassified

Optimalizacija oblika lučnih mostova s otvorenim nadlučnim sklopom

Pouraminian¹,

Ghaemian

2015

JCE

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“…The application of structural optimization is also widely employed, and an interesting application to optimize the cross-section of the cables of a cablestayed bridge can be found in [4]. In [5], optimization algorithms were used to optimize the deck size and the main cable cross-section area of the Messina Bridge project in Italy.…”

Section: Introductionmentioning

confidence: 99%

The role of surrogate models in combined aeroelastic and structural optimization of cable-stayed bridges with single box deck

Montoya¹,

Hernández²,

Kusano³

et al. 2016

WIT Transactions on the Built Environment

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The aeroelastic phenomena represent a crucial issue in the design of long span bridges and their relevance grows as the length of the spans is increased, which is the current trend in these mega-structures. The search for the best performing deck cross-section, as well as the search of the most economic bridge design, are two of the most relevant goals for bridge designers. Hence, the pursuit of good aerodynamic performance of the bridge deck cross-section and the structural optimization of the bridge are destined to converge in a unified process to achieve more efficient bridge designs, given their interdependence. This paper presents an integrated methodology based on a surrogate-based optimization process to obtain an optimum bridge design considering structural and aeroelastic constraints. The deck cross-section used in this work is the well-known G1 section, in which two deck shape variables are considered. The aerodynamic behavior of the cross sections analyzed by the optimization algorithm is given by a surrogate model trained with a set of designs calculated with CFD techniques. The structural performance is analyzed by means of finite element analysis. The areas and prestressing forces of the stays and the deck shape and plate thickness are considered as design variables, and the optimization of the bridge is carried out by a gradient-based optimization algorithm.

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“…A similar approach was used by Guan in terms of deflections. (7) Optimization Criterion (Baldomir et al 2010, Negrao and Simoes 1997, Simoes and Negrao 2000. In this criterion, the prestressing stay cable forces are defined by the minimization of a scalar objective function.…”

Section: Introductionmentioning

confidence: 99%

Structural behavior of non-symmetrical steel cable-stayed bridges

Jorquera-Lucerga¹,

Galant²,

Coderque³

2016

Steel Compos. Struct.

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Abstract. Despite of the growing number of built examples, the analysis of non-symmetrical cable-stayed bridges has not received considerable attention from the researchers. In fact, the effects of the main design parameters in the structural behavior of these bridges are not addressed in detail in the literature. To fill this gap, this paper studies the structural response of a number of non-symmetrical cable-stayed bridges. With this aim, a parametric analysis is performed to evaluate the effect of each of the main design parameters (the ratio between the main and the back span length, the pylon, the deck and backstay stiffnesses, the pylon inclination, and the stay configuration) of this kind of bridges. Furthermore, the role of the geometrical nonlinearity and the steel consumption in stays are evaluated.

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Cable optimization of a long span cable stayed bridge in La Coruña (Spain)

Cited by 56 publications

References 2 publications

Optimalizacija oblika lučnih mostova s otvorenim nadlučnim sklopom

Optimalizacija oblika lučnih mostova s otvorenim nadlučnim sklopom

The role of surrogate models in combined aeroelastic and structural optimization of cable-stayed bridges with single box deck

Structural behavior of non-symmetrical steel cable-stayed bridges

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