Optimum seismic design of cable-stayed bridges based on multi-objective particle swarm optimization

IF 4.1 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Bulletin of Earthquake Engineering Pub Date : 2025-06-16 DOI:10.1007/s10518-025-02198-7

Yue Feng, Bruno Briseghella, Luigi Fenu, Tobia Zordan

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Abstract

To address the challenges of optimizing cable-stayed bridges under seismic loading, a multi-objective particle swarm optimization (PSO) procedure to optimize load-bearing components of cable-stayed bridges is presented. The procedure integrates numerical computing software MATLAB with finite element analysis software ANSYS. The final goal is to identify the optimal cross-sectional dimensions of towers and girders, as well as the optimal cross-sectional areas of cables and their corresponding pre-tension forces. The goal is achieved by coupling the PSO for global searching, time history analysis or spectrum analysis for dynamic evaluation, and the influence matrix method for determining the cable pre-tension forces. The effectiveness of proposed procedure is validated through a two dimensional (2D) and a three dimensional (3D) symmetric layout bridge. Following that, the design procedure is utilized in the preliminary design of a single tower bridge without backstays located in Pescara, Italy. The results demonstrate that the proposed optimization procedure could be an useful tool to optimize cable-stay bridges under seismic loading.

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基于多目标粒子群优化的斜拉桥抗震优化设计

针对地震作用下斜拉桥结构优化问题，提出了一种基于多目标粒子群算法的斜拉桥承载构件优化方法。该程序集成了数值计算软件MATLAB和有限元分析软件ANSYS。最终目标是确定塔和梁的最佳横截面尺寸，以及索的最佳横截面面积和相应的预拉力。通过将粒子群算法用于全局搜索，将时程分析或谱分析用于动态评估，将影响矩阵法用于确定索的预张紧力，从而达到目标。通过二维（2D）和三维（3D）对称布局桥验证了该方法的有效性。随后，将设计程序应用于意大利佩斯卡拉无后拉索单塔桥的初步设计。结果表明，本文提出的优化方法可作为地震作用下斜拉桥结构优化的有效工具。

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来源期刊

Bulletin of Earthquake Engineering 工程技术-地球科学综合

CiteScore

8.90

自引率

19.60%

发文量

263

审稿时长

7.5 months

期刊介绍： Bulletin of Earthquake Engineering presents original, peer-reviewed papers on research related to the broad spectrum of earthquake engineering. The journal offers a forum for presentation and discussion of such matters as European damaging earthquakes, new developments in earthquake regulations, and national policies applied after major seismic events, including strengthening of existing buildings. Coverage includes seismic hazard studies and methods for mitigation of risk; earthquake source mechanism and strong motion characterization and their use for engineering applications; geological and geotechnical site conditions under earthquake excitations; cyclic behavior of soils; analysis and design of earth structures and foundations under seismic conditions; zonation and microzonation methodologies; earthquake scenarios and vulnerability assessments; earthquake codes and improvements, and much more. This is the Official Publication of the European Association for Earthquake Engineering.