Development of Analysis-Design-Assessment Framework for Performance Based Seismic Design of Building Structures

基于性能的建筑结构抗震设计分析-设计-评估框架的开发

• 批准号: 500576-2016
• 负责人: Kwon, OhSung
• 金额: $ 0.9万
• 依托单位: University of Toronto
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=608177
• 关键词: Development; Analysis; Design; Assessment; Framework

The objective of the proposed research is to develop a framework for elastic analysis, design, and inelastic performance assessment for performance based seismic design of building structures. In the conventional design approach life safety (i.e. force capacity) and serviceability (i.e. drift limit) are considered in the design process. Because the conventional design method is based on the linear elastic analysis, the method cannot realistically assess the performance of a structure subjected to earthquake excitation. In addition, the conventional code-complying prescriptive design is limited in meeting an owner's various performance needs such as expected economic loss associated with a certain intensity of earthquake event. In the performance-based design (PBD) approach, on the other hand, target performance requirements for various seismic hazard scenarios are defined, and a structure is designed to meet the requirements. In this process, the performance of the structure needs to be assessed based upon a realistic numerical model of the structure that can capture the inelastic behaviour of the structure up to failure. The proposed research aims at facilitating the PBD by carrying out three major research tasks: 1) develop a novel analysis-design-assessment framework for performance based seismic design, 2) implement the framework by incorporating nonlinear analysis tools with a conventional analysis-design tool, and 3) develop a document with verification and validation examples for the adopted nonlinear numerical models. The research project will significantly impact the industry partner, the structural engineering industry, and Canada. The research development which will be implemented in the industry partner's main product will allow the company to lead the market in the next five years. For Canada, there will be economic benefits by improving the competitiveness of the industry partner and by training HQPs. In addition, building structures designed using the framework will be safe and economical which will minimize the societal loss in the event of major earthquakes.

建议的研究的目标是开发一个框架，弹性分析，设计和非弹性性能评估的性能为基础的抗震设计的建筑结构。在传统的设计方法中，在设计过程中考虑了生命安全性（即承载力）和适用性（即漂移极限）。由于传统的设计方法是基于线弹性分析，该方法不能真实地评估结构在地震作用下的性能。此外，传统的符合规范的规定性设计在满足业主的各种性能需求方面受到限制，例如与一定强度的地震事件相关的预期经济损失。另一方面，在基于性能的设计（PBD）方法中，定义了各种地震危险场景的目标性能要求，并设计了满足要求的结构。在这个过程中，结构的性能需要评估的基础上，一个现实的数值模型的结构，可以捕捉到的非弹性行为的结构，直到失败。建议的研究旨在促进PBD进行三个主要的研究任务：1）开发一种新的分析，设计，评估框架的性能为基础的抗震设计，2）实施框架结合非线性分析工具与传统的分析设计工具，和3）开发一个文件与验证和验证的例子，采用非线性数值模型。该研究项目将对行业合作伙伴、结构工程行业和加拿大产生重大影响。将在行业合作伙伴的主要产品中实施的研究开发将使公司在未来五年内引领市场。对加拿大来说，提高行业伙伴的竞争力和培训HQP将带来经济利益。此外，使用该框架设计的建筑结构将是安全和经济的，这将在发生大地震时最大限度地减少社会损失。