Reliability Acceptance Criteria for Deteriorating Elements of Structural Systems
Reliability Acceptance Criteria for Deteriorating Elements of Structural Systems
复制标题
结构系统恶化元件的可靠性验收标准
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
A. Kiureghian
中科院分区：
文献类型：
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作者：
D. Štraub;A. Kiureghian
提出了一种系统的方法来确定可靠性为基础的验收标准，在结构系统中恶化的元素，作为校准的安全系数的代码和标准，并验证可接受的检查和维修策略的具体结构的基础。其目标是根据为系统制定的标准，为结构系统的元件建立劣化验收标准。现有方法由于忽略了不同单元退化失效的联合效应，严重高估了冗余结构系统的退化可靠度。为了更真实地捕捉退化冗余结构系统的载荷分配行为，建议建立基于易于计算的理想化结构系统的退化验收准则，该准则根据真实的结构的特性进行校准。一个例子结构系统的方法进行了验证，并发现代表了显着的改进，目前的方法。本文最后研究了影响劣化可靠性验收准则的主要因素。
A systematic approach to determining reliability-based acceptance criteria for deteriorating elements in structural systems is proposed, as a basis for calibration of safety factors in codes and standards and for verifying acceptability of inspection and maintenance strategies for specific structures. The goal is to establish deterioration acceptance criteria for the elements of a structural system in compliance with criteria formulated for the system. Existing methods significantly overestimate the deterioration reliability of redundant structural systems because they neglect the joint effect of deterioration failures of different elements. To more realistically capture the load-sharing behavior of deteriorating redundant structural systems, it is proposed to establish deterioration acceptance criteria based on easily computable, idealized structural systems, which are calibrated to the characteristics of the real structure. The approach is validated on an example structural system and is found to represent a significant improvement over current methods. The paper concludes with a study of the main factors influencing acceptance criteria of deterioration reliability.