Assessment of Existing Steel Structures – Recommendations for Estimation of the Remaining Fatigue Life
Assessment of Existing Steel Structures – Recommendations for Estimation of the Remaining Fatigue Life
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DOI：
10.1016/j.proeng.2013.12.057
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
B. Kühn
中科院分区：
文献类型：
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作者：
B. Kühn
在许多国家和地区，交通基础设施项目的资金不足。新的基础设施建设预算紧张，因此，现有交通基础设施的检查，维护和评估的重要性增加。ECCS第6技术委员会[1]编写了一个新的疲劳评估指南，用于估计钢桥的剩余疲劳寿命。这将是一个有用的工具，桥梁管理系统的补充，通常用于状态assessment.This本文提出了一个建议的疲劳评估程序，现有的钢结构嵌入在旧材料和非破坏性测试方法的详细评估信息的指导方针。特别注意的补救措施，提出了薄弱的细节和疲劳造成的损害。所开发的疲劳评估程序一般可应用于循环荷载下的现有钢结构，但由于公众的重要性，该指南集中于由旧钢制成的现有交通基础设施。建议的程序总结，重组和安排的知识，在现有的钢材评估领域的应用实践工程师。该程序是从科学知识到最新技术的知识转移的里程碑。为此，JRC-ECCS-联合报告已经出版。与此同时，技术委员会正在对这些建议进行第二次修订。主题演讲还将介绍建议的新扩展，例如，处理现有起重机结构或风力发电厂评估中的细节，或处理正交异性桥面板实际改造技术的信息。
In many countries and regions, the traffic infrastructure projects suffer from low funding. There budget is tight for new infrastructure building and, thus, the importance of inspection, maintenance and assessment of the existing traffic infrastructure increases. A new fatigue assessment guideline for the estimation of the remaining fatigue life of steel bridges has been written by technical committee 6 from ECCS [1]. It will be a useful tool for the complementation of bridge management systems, used commonly for condition assessment.This paper presents a guideline with a proposed fatigue assessment procedure for existing steel structures embedded in information about old materials and non-destructive testing methods for the evaluation of details. Particular attention is paid on remedial measures which are proposed for weak details and damages caused by fatigue. The developed fatigue assessment procedure can be applied to existing steel structures under cyclic loading in general, but the guideline concentrates on the existing traffic infrastructure made from old steel, because of the public importance. The proposed procedure summarizes, regroups and arranges the knowledge in the field of assessment on existing steel to be applied by practicing engineers. The procedure is a milestone in knowledge transfer from a state of scientific knowledge to state-of-the-art.To this end the presented JRC-ECCS-Joint Report has been published. In meantime the Technical Committee is working on a 2ndedition of these recommendations. The keynote will also presents the new extensions of the recommendations e.g. dealing with the specifics in an assessment of existing crane structures or wind power plants or dealing with information on actual retrofitting techniques for orthotropic bridge decks.