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Seismic Optimization Method of Nuclear Power Crane Structure

Zhengyan Chang, Weiwei Wang, Mingliang Yang, Heng Yang, Qing Dong, Keyuan Zhao, Jie Yuwen^*

School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan, 030024, China

* Corresponding Author: Jie Yuwen. Email:

(This article belongs to the Special Issue: Assessment, Monitoring and Optimization of Steel and Composite Structures against Seismic Events and Extreme Actions)

Structural Durability & Health Monitoring 2026, 20(1), . https://doi.org/10.32604/sdhm.2025.066572

Received 11 April 2025; Accepted 08 July 2025; Issue published 08 January 2026

Abstract

To address the neglect of seismic performance in conventional double-girder bridge crane optimization, this paper introduces a time-history analysis-based seismic optimization methodology for crane structures. Using a 25-t nuclear power crane as a case study, a bridge frame finite element model is established and validated through static analysis, confirming its accurate representation of the physical entity’s mechanical behavior. Furthermore, with bridge mass reduction as the objective and structural strength, stiffness, stability, and seismic mechanical performance as constraints, an optimization model is developed employing the Whale Optimization Algorithm (WOA).

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Keywords

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