预应力钢结构建造服役技术现状与展望

Current Status and Prospects of Construction and Service Technologies forPrestressed Steel Structures

预应力钢结构由于受力路径明确合理、刚度大、自身重量较轻以及制作安装方便等显著特点,广泛应用于大型公共建筑的城市基础设施及特种结构中。首先回顾了80多年来预应力钢结构建造技术国内外发展的历史、材料方面等瓶颈难题的突破,标志性的工程及系列标准规程的颁布。面对城镇化发展的新需求,阐述了预应力钢结构服役性能评价方法、在役性能多层次的提升技术等方面的发展和研究现状。最后结合国家科技创新发展战略目标,展望了预应力钢结构未来趋势,重点关注新材料应用、数字化维护、智能建造和智能控制平台。通过回顾分析,旨在为预应力钢结构领域研究与实践提供参考。

Prestressed steel structures are widely used in large public buildings,urban infrastructure,and specialized structures due to their clear and reasonable load-bearing paths,high stiffness,light weight,and ease of fabrication and installation.This paper reviewed over eighty years of domestic and international developments in prestressed steel structure construction technology,breakthroughs in material-related bottlenecks,as well as the publication of landmark projects and a series of standards and regulations.In response to the new demands of urbanization,it discussed the development and research status of prestressed steel structures,including service performance evaluation methods and multi-level performance enhancement technologies for structures in service.Finally,in line with the national strategic goals for technological innovation,the future trends of prestressed steel structures were explored,with a focus on new material applications,digital maintenance,intelligent construction,and smart control platforms.Through retrospective analysis,this paper aims to provide a reference for research and practice in the field of prestressed steel structures.