Structural Reliability and Sustainable Resilience

结构可靠性和可持续弹性

• 批准号: 1063790
• 负责人: Ross Corotis
• 金额: $ 30万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-05-01 至 2014-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1063790&HistoricalAwards=false
• 关键词: Structural; Reliability; Sustainable; Resilience

The goal of this research is to formulate the enhanced concept of community resilience by the incorporation of recent theoretical and computational capabilities from structural system reliability. The fundamental theory builds upon the integrity of a structure in terms of its role in the physical, social and economic well-being of the community it serves. This leads to an approach to structural design based on the inherent tradeoffs for societal investment in structures in terms of their sustainability for intended functions, and the consequent resilience of the community. Inherent in this concept is the sensitivity of the performance of structures to such issues as low probability, high consequence events, and even black swans. To accomplish this overarching goal, structural system reliability algorithms will be utilized to investigate the sensitivity of structures to multiple failure modes and compound load combinations, leading to an evaluation of their impact on overall integrity and functionality. This will form the basis for the relationship between resilience and life cycle evaluation, the building block of sustainability. Alternative measures of uncertainty will be incorporated into models of structure and community resilience as time-varying processes, enabling the development of efficient approaches to holistic infrastructure.This research will directly enhance the relationship between structural reliability and long-term sustainability, increasing the effectiveness of investments in the built environment, especially in a life cycle context. Potential consequences due to occupancy, environmental degradation, and both natural and intentional hazards ultimately impact community development decisions regarding growth patterns, land use restrictions, building codes and mitigation plans. The results of this research will lead to more robust, resilient and efficient built environments. New educational paradigms will also result, with interdisciplinary approaches to civil systems and hazards from both engineering and sociological perspectives. The project will also provide advanced training to graduate students on the topic of systems reliability, resilience and sustainability through their involvement in the project research activities.

本研究的目标是制定增强社区弹性的概念，结合最近的理论和计算能力，从结构系统的可靠性。 基本理论建立在一个结构在其所服务的社区的物质，社会和经济福利方面的作用的完整性之上。 这导致了一种结构设计方法，其基础是社会对结构的投资在其预期功能的可持续性方面的固有权衡，以及随之而来的社区弹性。 在这个概念中固有的是结构性能对低概率、高后果事件甚至黑天鹅等问题的敏感性。 为了实现这一总体目标，将利用结构系统可靠性算法来调查结构对多种失效模式和复合载荷组合的敏感性，从而评估其对整体完整性和功能性的影响。 这将构成复原力与生命周期评价之间关系的基础，生命周期评价是可持续性的组成部分。 不确定性的替代措施将被纳入结构和社区复原力模型，作为随时间变化的过程，从而能够制定有效的方法来全面的基础设施，这项研究将直接加强结构可靠性和长期可持续性之间的关系，提高建筑环境投资的有效性，特别是在生命周期的背景下。 由于占用、环境退化以及自然和故意危害而产生的潜在后果最终影响到社区在增长模式、土地使用限制、建筑法规和缓解计划方面的发展决定。 这项研究的结果将导致更强大，更有弹性和更高效的建筑环境。 新的教育模式也将产生，从工程和社会学的角度对民事系统和危害采取跨学科的方法。 该项目还将通过研究生参与项目研究活动，向他们提供系统可靠性、复原力和可持续性方面的高级培训。