Collaborative Research: Guidelines for the Design of Steel Shear Angle Connections Under Fire Hazard

本研究计画将探讨角钢剪力连接之火灾危险性。钢剪切角连接常用于钢框架建筑中，以支撑楼板梁并为结构提供整体稳定性。在内部火灾的情况下，这些连接的性能对整个结构的响应起着至关重要的作用。因此，了解这些连接在火灾中的行为非常重要。将在密歇根州立大学和普林斯顿大学进行全尺寸火灾实验和数值研究，以提高对从火灾前阶段到倒塌阶段整个荷载范围内此类连接行为的基本理解。本研究将评估改进的连接细节的防火性能。该项目将为这些连接的改进设计提供基本数据，以适应真实的火灾和外部载荷。 这些数据将用于制定剪力角连接的设计和耐火评估指南。 建议的设计指引将有助制订美国建筑物防火设计守则和标准，以及将防火设计纳入整体结构设计方法。预计这些准则将产生具有成本效益和增强的钢结构防火设计。计划向研究人员和从业人员广泛传播研究结果和数据，以便在实践中迅速实施设计准则。 该项目还将通过研究生和本科生直接参与项目工作，培养下一代钢结构防火设计的熟练劳动力。

This research project will study the structural behavior of steel shear angle connections to fire hazard. Steel shear angle connections are often used in steel framed buildings to support the floor beams and provide overall stability to the structure. In case of an internal fire, the performance of these connections plays a crucial role on the response of the structure as a whole. It is thus important to understand the behavior of these connections exposed to fire. Full-scale fire experiments and numerical studies will be conducted at Michigan State University and Princeton University to improve the basic understanding of the behavior of such connections for the entire range of loading from pre-fire stage to collapse stages. The study will evaluate the fire performance of the improved connection details. The project will generate basic data for improved design of these connections for realistic fire and external loading. This data will be used to formulate the guidelines for the design and fire resistance evaluation of shear angle connections. The proposed design guidelines will facilitate the development of US codes and Standards for the design of structures for fire hazards, and integration of fire design into overall structural design methodology. The guidelines are expected to produce cost-effective and enhanced fire-safe designs of steel structures. The wide dissemination of the research results and data to researchers and practitioners is planned for quick implementation of the design guidelines in practice. The project will also train the next generation of skilled workforce for fire resistant design of steel structures through the direct involvement of graduate and undergraduate students in the project work.