Simulation and Experiment on Repair Welding Maintenance of Orthotropic Steel Deck Fatigue Failure

IF 3.2 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-08-04 DOI:10.1111/ffe.70049

Ping Wang, Xiaosong Yu, Banglong Yu, Yong Liu, Xiaoguo Song, Hongliang Qian, Ke Dong

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引用次数: 0

Abstract

Based on the engineering background of the Hong Kong-Zhuhai-Macao Bridge (HZM Bridge), the fatigue characteristics and operation and maintenance strategies of orthotropic steel decks (OSD) were systematically studied through finite element simulation and high-cycle fatigue (HCF) tests. A finite element model of the OSD segment is established to analyze the influence of unfavorable loading positions of longitudinal and transverse wheel loads on the stress distribution of U-rib-to-deck weld (U_d), U-rib butt weld (U_b), and U-rib-to-diaphragm weld (U_rd) and determine the fatigue dangerous position of welds. The critical crack size of welded components is predicted based on the Failure Assessment Diagram (FAD) method. The HCF testing showed that the fatigue life was reduced by 60% and 30% after toe and deck repair, respectively. Combined with the Paris' law and the damage equivalent coefficient method, the maintenance intervals for toe and deck repairs are 3 and 5.4 years, respectively.

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正交异性钢甲板疲劳破坏修补焊接维修模拟与试验

以港珠澳大桥（HZM）为工程背景，通过有限元模拟和高周疲劳试验，系统研究了正交异性钢桥面的疲劳特性及运维策略。建立OSD段有限元模型，分析纵向和横向车轮荷载不利加载位置对u肋-甲板焊缝、u肋对接焊缝和u肋-膜片焊缝应力分布的影响，确定焊缝疲劳危险位置。基于失效评估图（FAD）方法预测了焊接构件的临界裂纹尺寸。HCF试验表明，修复后的趾部和甲板的疲劳寿命分别降低了60%和30%。结合巴黎定律和损伤等效系数法，得到趾部和甲板维修的维修间隔分别为3年和5.4年。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.