Aero-structural optimization-based tailoring of bridge deck geometry

Montoya, Miguel Cid; Hernández, Santiago; Kareem, Ahsan

doi:10.1016/j.engstruct.2022.114067

Cited by 9 publications

(7 citation statements)

References 54 publications

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“…Further details about this optimization problem in the context of bridge engineering are provided in Cid Montoya et al. (2022). In addition, a comprehensive list of the design constraints considered in this study is provided in Table 2.…”

Section: Aero‐structural Design Optimization In Bridge Engineeringmentioning

confidence: 99%

“…The performance of the proposed algorithm described in Section 3 is tested herein by using as a reference the optimum designs obtained for the application example reported in Cid Montoya et al. (2022), which is referred to in the following as full aero‐structural optimization strategy. The two test cases analyzed in this study correspond to the constraint sets 2 and 3 in the aforementioned reference.…”

Section: Application Casesmentioning

confidence: 99%

“…The original aero‐structural optimization formulation for the wind‐resistant design of long‐span bridges is described in Section 2 as previously formulated and solved in Cid Montoya et al. (2022). The holistic formulation used in that study involved a large number of design variables and constraints to properly handle the specifications of real bridge projects at the cost of a huge computational burden.…”

Section: Introductionmentioning

confidence: 99%

“…Extensions of these methods toward multimodal analysis frameworks both in the frequency domain (Ge & Tanaka, 2000; Jain et al., 1996) and the time domain (Beliveau et al., 1977; Caracoglia & Jones, 2003; Chen & Kareem, 2002) showed an excellent performance to model the actual aeroelastic responses of long‐span bridges. They are still nowadays the most widespread methodology used in the industry (Diana et al., 2022), and they have been recently used for the wind‐resistant design optimization of bridges (Cid Montoya et al., 2022).…”

Section: Introductionmentioning

confidence: 99%

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Sequential aero‐structural optimization method for efficient bridge design

Montoya

2023

Computer aided Civil Eng

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The recent development of aero‐structural optimization methods provides a powerful tool to achieve cost‐effective and safe designs for wind‐sensitive structures. However, pursuing holistic formulations involves adopting many design variables and constraints, which increases the computational burden preventing the application of nonlinear methods for accurately assessing aeroelastic responses. This paper proposes a sequential aero‐structural optimization (SASO) method to improve the efficiency of holistic wind‐resistant design optimization of wind‐sensitive structures. The original problem is uncoupled into two standalone optimization problems: a structural size optimization and an aeroelastic shape optimization, linked by an adaptive mapping surrogate and an outer loop. This strategy permits the design‐space dimensionality reduction and avoids the computation of multiple sensitivities with low influence on the design decisions. A long‐span bridge is successfully optimized. The convergence is drastically accelerated by minimizing the number of aeroelastic evaluations, opening the way to implement nonlinear aeroelastic performance‐based design optimization frameworks.

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Section: Aero‐structural Design Optimization In Bridge Engineeringmentioning

confidence: 99%

Section: Application Casesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sequential aero‐structural optimization method for efficient bridge design

Montoya

2023

Computer aided Civil Eng

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“…Orcesi, Cremona, and Ta [ 8 ] performed a multiobjective optimization, considering the live cycle of the bridge. Montoya, Hernández, and Kareem [ 9 ] applied an aero-structural optimization to obtain the optimal shape and size of a bridge deck. Yepes et al [ 10 ] developed a program for the optimization of steel-concrete composite pedestrian bridges.…”

Section: Introductionmentioning

confidence: 99%

Multi-Objective Optimization Applied to the Design of Sustainable Pedestrian Bridges

Tres

Piqueras

Medeiros

et al. 2023

IJERPH

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The demand for more sustainable structures has been shown as a growing tendency, and engineers can use optimization techniques to aid in the design and sizing stage, achieving solutions that minimize its cost and environmental and social impacts. In pedestrian bridges, which are subjected to human-induced vibrations, it is also important to ensure the users’ comfort, besides the security verifications. In this context, the objective of this paper is to perform a multi-objective optimization of a steel-concrete composite pedestrian bridge, minimizing cost, carbon dioxide emissions, and vertical acceleration caused by human walking. For this, the Multi-Objective Harmony Search (MOHS) was applied to obtain non-dominated solutions and compose a Pareto Front. Two scenarios were considered with different unit emissions obtained from a life cycle assessment in the literature. Results show that by increasing 15% the structure cost, the vertical acceleration is reduced from 2.5 to 1.0 m/s2. For both scenarios, the optimal ratio for the web height and total span (Le) lies between Le/20 and Le/16. The web height, the concrete strength, and the slab thickness were the design variables with more influence on the value of the vertical acceleration. The Pareto-optimal solutions were considerably sensitive to the parameters varied in each scenario, changing concrete consumption and dimensions of the welded steel I-beam, evidencing the importance of carrying out a sensitivity analysis in optimization problems.

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Shaping bridge decks for VIV mitigation: A wind tunnel data-driven adaptive surrogate-based optimization method

Cid Montoya,

Bai,

2023

Journal of Wind Engineering and Industrial Aerodynamics

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Aero-structural optimization-based tailoring of bridge deck geometry

Cited by 9 publications

References 54 publications

Sequential aero‐structural optimization method for efficient bridge design

Sequential aero‐structural optimization method for efficient bridge design

Multi-Objective Optimization Applied to the Design of Sustainable Pedestrian Bridges

Shaping bridge decks for VIV mitigation: A wind tunnel data-driven adaptive surrogate-based optimization method

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