(1 清华大学土木工程系， 北京 100084； 2 百安力钢结构应用科技有限公司， 珠海 519040)

［摘要］城乡建设领域的绿色发展和“十四五规划”对高性能结构材料、结构构件及结构体系的低碳、节能、环保提出了更高要求。对高性能结构钢材（包括高强钢、耐候钢、耐火钢、抗震耐蚀耐火钢）的基本特征和高温力学特性进行了分类和梳理，对高性能钢材基本构件及其连接的高温承载性能研究现状进行了总结和分析，对基于高性能钢材的建筑和桥梁结构体系发展趋势和应用前景进行了展望，对基于高性能钢材的组合结构体系研究提出了相关建议。 

［关键词］高性能结构钢材；耐火钢；耐候钢；高温力学性能；高温承载性能；高性能钢结构体系 

中图分类号：TU393，TU398 文献标识码：A文章编号：1002-848X(2021)17-0145-07

Research and application on high performance structural steel and its structural system 

SHI  Yongjiu1,  YU  Xianglin1,  BAN  Huiyong1,  PANG  Yiukwong 2 

(1 Department of Civil Engineering, Tsinghua University, Beijing 100084， China；2 P&Ls’ Steel Structure Applies Technology Co., Ltd., Zhuhai 519040， China) 

Abstract: Both the green development in construction industry and the 14th Five-Year Plan have higher demands to provide high performance materials, structural members and structural systems with low carbon emission, low energy consumption and eco-friendly properties. The fundamental features and high temperature mechanical properties of high performance structural steel were classified and sorted out, such as high strength steel, weathering steel, fire-resistant steel, seismic-weathering and fire-resistant steel. The current research status of load-bearing behaviors at elevated temperatures for high performance steel basic components and their connections were summarized and analyzed. The development trend and application prospects of high performance steel for building and bridge structural system were prospected. Relevant suggestions were proposed on the research on composite structural system with high performance steel. 

Keywords:high performance structural steel； fire-resistant steel； weathering steel； mechanical property at elevated temperature； load-bearing behavior at elevated temperature； high performance steel structural system

*国家自然科学基金项目资助（52078276，51890903）。

 作者简介：石永久，博士，教授，博士生导师，Email：shiyj@tsinghua.edu.cn。