《Journal of Infrastructure Systems》杂志刊登“考虑休眠的溢洪道的可靠性分析的应用”

作者：Maryam Kalantarnia,Luc Chouinard,Stuart Foltz

刊物：《Journal of Infrastructure Systems》，2013年4月4日印刷

摘要：大坝是供水、防洪、可再生能源和灌溉的重要基础设施。溢洪道的安全是大坝安全的重要组成部分，具有控制流量和防止大坝漫顶的作用。由于基础设施、人口和环境与过多的下游流量和过高的上游水位有关联，因此溢洪道对下游基础设施、人口和环境也有着重要影响。本文讨论了紧急状况下溢洪道的可靠性问题，特别是经过长时间的休眠期之后的溢洪道可靠性评估。休眠期间，溢洪道暴露在环境中，遭受持续累积损伤，可能造成潜在的故障或不能满足功能需求。常规的检查和测试是用来检测和修复潜在的故障和溢洪道组成部分的劣化水平。本文研究的目的是在考虑休眠的影响的溢洪道的可靠性分析方法。同时也表明了这种分析方法可以用来评估检查和测试的频率对溢洪道整体可靠性的影响。随后介绍了用“性能的测量”，“休眠有效性分析”和“经过完整评估的休眠有效性分析”等方法来说明泄洪系统由于休眠的作用而对基本功能的满足情况。并利用这些信息来确定检查和测试的最优频率，同时应该充分考虑结构的安全以及与检测和检查相关的费用问题。

Application of Dormant Reliability Analysis to Spillways

Authors: Maryam Kalantarnia,Luc Chouinard,Stuart Foltz

Journal: Journal of Infrastructure Systems, Published: 04 April 2013

Abstract: Dams are essential infrastructures for water supply, flood control, energy production and irrigation. A critical component for the safety of a dam is the spillway system which, by controlling releases, prevents overtopping of the dam. This in turn reduces impacts associated with excessive downstream flows and upstream water levels on infrastructures, the population and the environment. This article addresses reliability issues related to emergency spillways and specifically the estimation of their reliability level after prolonged periods of dormancy. During dormancy, spillway components are exposed to the environment and sustain cumulative damage that may trigger latent failures or failures on demand. Regular inspections and tests are used to detect and remediate latent failures and to assess the level of deterioration of components. The purpose of this study is to develop procedures to account for dormancy in the reliability analysis of spillways. It also demonstrates how these procedures can be used to evaluate the impact of the frequency of inspections and tests on the overall reliability of the spillways. This article introduces “Measure of performance”, “Dormant availability analysis” and “Dormant availability analysis via integrity assessment” as methods to illustrate the unavailability/probability of failure on demand of a spillway system as a function of its dormancy period. This information can be used to determine the optimum frequency of inspection and tests taking into account the safety of the structure as well as the costs associated with inspection and testing.

原文链接：http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29IS.1943-555X.0000159