Developing innovative methods for performance driven design and health monitoring of structures

开发性能驱动设计和结构健康监测的创新方法

• 批准号: 311973-2010
• 负责人: Bagchi, Ashutosh
• 金额: $ 1.46万
• 依托单位: Concordia University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=526337
• 关键词: Developing; innovative; methods; performance; driven

Traditional building codes are said to be prescriptive as they specify the design solutions and construction requirements according to particular materials and methods, rather than to performance criteria. Consequently, the design process becomes highly regulated and complex. Performance Based Design (PBD) format has been evolving as an alternative to the current practice. PBD is expected to offer a more flexible framework for design to ensure adequate safety as well as desired performance, and foster innovation in design by allowing the application of any acceptable and verifiable solution to achieve a given level of performance. The National Building Code of Canada (2005) has made some progress in that direction. However, the full framework for PBD of buildings is not yet available. The proposed research focuses on the performance-based seismic design (PBSD) of buildings. PBSD generally defines the target performance in terms of displacement and damage under specified levels of seismic hazard. While much research has been carried out in the recent past on PBSD, a number of issues, such as, availability of a robust mechanism for achieving PBSD within the constraints of the current building codes, and reliable and simplified methods for PBSD and seismic performance evaluation of buildings, remained unresolved. The proposed research will address these issues by developing simplified and practical methods for performance-driven seismic design of regular and irregular buildings. Similar methods for multiple levels of seismic hazard such as, post-earthquake fire will also be developed. Apart from the design of new buildings, the methods developed herein can be potentially used for performance-based seismic upgrade of existing buildings. Performance monitoring of new and existing structures is another important aspect complementary to PBD. New methods for performance assessment using structural health monitoring techniques will be developed for that. There is a significant potential for innovation in the proposed research which aims at enhancing the fundamental knowledge on structural design and performance monitoring/assessment, and producing high performing, safer, and sustainable/durable civil infrastructure.

传统的建筑规范被认为是规范性的，因为它们根据特定的材料和方法，而不是根据性能标准，规定了设计方案和施工要求。因此，设计过程变得高度规范和复杂。基于性能的设计（PBD）格式已经发展成为当前实践的替代方案。PBD有望为设计提供更灵活的框架，以确保足够的安全性和期望的性能，并通过允许应用任何可接受和可验证的解决方案来实现给定的性能水平，从而促进设计创新。《加拿大国家建筑规范》（2005年）在这方面取得了一些进展。然而，建筑PBD的完整框架尚未可用。本文主要研究基于性能的建筑抗震设计（PBSD）。一般来说，PBSD是根据特定地震危险等级下的位移和损伤来定义目标性能的。虽然最近对PBSD进行了大量研究，但仍有许多问题尚未解决，例如，在当前建筑规范的约束下实现PBSD的强大机制的可用性，以及可靠和简化的PBSD和建筑物抗震性能评估方法。提出的研究将通过开发简化和实用的方法来解决这些问题，为规则和不规则建筑的性能驱动的抗震设计。类似的方法也将用于多级地震灾害，如地震后火灾。除了新建筑的设计之外，本文开发的方法还可以潜在地用于现有建筑的基于性能的抗震升级。新结构和现有结构的性能监测是PBD的另一个重要补充。为此，将开发利用结构健康监测技术进行性能评估的新方法。拟议的研究有很大的创新潜力，其目的是提高结构设计和性能监测/评估的基本知识，并生产高性能、更安全、可持续/持久的民用基础设施。