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Predicting the Remaining Service Life of Waterfront Structures

机译：预测滨水结构的剩余使用寿命

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摘要

In the early 1900’s, waterfront structures often had a dismal effective service life of less than 10 years. This was due to pervasive marine borer infestation of timber components, as well as primitive concrete technology that left concrete components unprotected against sulfate attack. rnModern structures are now routinely designed for service lives of 50 years, 100 years, or even more. It is now common design practice to consciously choose, during the planning and design stage of a project, what the design service life will be. A 35- to 50-year design life may be suitable for a new container wharf that may be functionally obsolete after this period. Conversely, a major new bridge, dam, or breakwater may be designed for a service life of 100 years or more. rnSignificant progress has been made in recent years toward reliably predicting the remaining service life of existing structures. Yet, despite this progress, this science is still in its infancy. This paper outlines the progress made to date, as well as the ongoing research and development aimed at advancing this science to the next level.rn Fundamental to the prediction of remaining service life is the forecasting of deterioration rates. This is inherently difficult since these rates are non-uniform and are dependent upon the complex interaction of many variables. This paper explains the tools and methodologies currently available to the practicing engineer, as well as the research and limitations behind these tools. rnFinally, the paper introduces a new index, referred to as the “Service Reserves Factor” (SRF), which may prove to be a useful tool for the owner as well as the owner’s engineer. The SRF is useful in understanding the remaining service life of a structure relative to other structures, and may be particularly useful in prioritizing maintenance activities.
机译：在1900年代初期，滨水结构的有效使用寿命通常不到10年。这是由于大量的海蛀虫侵袭了木材部件，以及原始的混凝土技术使混凝土部件无法抵御硫酸盐的侵蚀。 rn现代结构现在通常设计为使用寿命为50年，100年甚至更长。现在，常见的设计实践是在项目的规划和设计阶段自觉选择设计使用寿命。 35至50年的设计寿命可能适合于此时间段后在功能上已过时的新集装箱码头。相反，大型新桥，水坝或防波堤的设计使用寿命可能为100年或以上。 rn近年来，在可靠地预测现有结构的剩余使用寿命方面取得了重大进展。然而，尽管取得了这一进展，但该科学仍处于起步阶段。本文概述了迄今为止所取得的进展，以及旨在将这一科学提高到新水平的正在进行的研究和开发。剩余使用寿命的预测基础是对劣化率的预测。这固有地困难，因为这些速率是不均匀的并且取决于许多变量的复杂相互作用。本文介绍了实践工程师当前可用的工具和方法，以及这些工具背后的研究和局限性。 rn最后，本文引入了一个新的索引，称为“服务储备因子”（SRF），它可能被证明对所有者和所有者的工程师都是有用的工具。 SRF对于了解某个结构相对于其他结构的剩余使用寿命很有用，并且在确定维护活动的优先级时可能特别有用。

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  • 会议地点 Houston TX(US);Houston TX(US)
  • 作者

    Ronald E. Heffron; Valery M. Buslov;

  • 作者单位

    Han-Padron Associates, LLP, 6700 E. Pacific Coast Highway,Suite 180, Long Beach, CA 90803, PH (562) 493-8300, rheffron@han-padron.com;

    Han-Padron Associates, LLP, 22 Cortlandt Street, 33rd Floor, New York, NY 10007, PH (212) 608-3990, vbuslov@han-padron.com.;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 港口工程;
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