Experimental Evaluation of Stability Response in Steel Framed Structures under Seismic Loading

地震荷载下钢框架结构稳定性响应试验评价

基本信息

批准号：
536344-2018
负责人：
Imanpour, Ali
金额：
$ 5.13万
依托单位：
University of Alberta
依托单位国家：
加拿大
项目类别：
Collaborative Research and Development Grants
财政年份：
2020
资助国家：
加拿大
起止时间：
2020-01-01 至 2021-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=699159
关键词：
Experimental Evaluation Stability Response Steel

项目摘要

A large portion of buildings in North America are built with steel braced frames and steel moment-resisting frames to resist lateral loads due to winds and earthquakes. Steel braced frames consist in vertical trusses that provide large lateral stiffness to structures. Moment-resisting frames are built from beams and columns that are rigidly connected together. In the last decades, research and experience from past earthquakes have led to significant changes in codes and standards for the seismic design of these framing systems. However, recent research has revealed undesirable stability failures of columns in these frame structures that are not properly addressed in current steel design standards and require further investigation. To ensure predictable and safe response of steel frames under future seismic events, design strategies are needed that properly account for possible column stability failures while maintaining construction costs to minimum. This research project aims to develop effective seismic stability requirements for columns of steel braced frames and moment-resisting frames. This will be achieved through comprehensive full-scale column testing and extensive advanced numerical simulations. The project will lead to design recommendations for the next Canadian steel design standards and improved design tools to be used by structural engineers in their day-to-day practice.

北美的大部分建筑物是用钢制的架子框架和抗钢的框架建造的，可抵抗风和地震引起的横向负荷。钢制支撑框架由垂直桁架组成，这些垂直桁架为结构提供了较大的侧向刚度。抗矩框架是由横梁和圆柱建造的，这些横梁和圆柱刚连接在一起。在过去的几十年中，过去地震的研究和经验导致了这些框架系统的地震设计的代码和标准的重大变化。但是，最近的研究揭示了这些框架结构中柱的不良稳定性故障，这些结构在当前的钢设计标准中未正确解决，需要进一步研究。为了确保未来的地震事件下的钢框架对钢框架的可预测和安全响应，需要设计策略，以适当解释可能的柱稳定性故障，同时将施工成本保持在最低限度。该研究项目旨在为钢制支撑框架和抗矩框架的柱制定有效的地震稳定性要求。这将通过全面的全尺度列测试和广泛的高级数值模拟来实现。该项目将为下一个加拿大钢铁设计标准和改进的设计工具提供设计建议，以便结构工程师在日常练习中使用。