Requirements,development,and innovation of long-life cable materials and technologies for ultra-large-span bridges
Since the 1990s,China has made significant breakthroughs in the construction of cross-river,cross-sea and cross-canyon bridges with bridge spans increasing continuously.The spans of cable-stayed bridges and suspension bridges have exceeded 1200 m and 2300 m,respectively.China is currently transitioning from a"bridge country"to a"bridge powerhouse",where cable materials and technological advancements play a crucial role.This paper provides an in-depth analysis of the develop-ment of bridge technology,particularly the requirements for cable materials in terms of increasing span and long service life,and clarifies the development demands for cable materials and technologies.It systematically reviews the recent progress in domestic and international cable materials,including wire rods,steel wires,and anchorage systems used in bridge cables,as well as the damage and failure mechanisms,performance evaluation and assurance,standard systems,manufacturing and installation technologies of cable systems.Innovative directions and technological routes are proposed for bridge cable materials and technologies,including the development of high-performance steel wires and an-chorage systems,research on damage and failure mechanisms of cable systems in harsh environments,performance evaluation and long-term assurance techniques,manufacturing and installation technolo-gies of cable systems.This study aims to provide references for the research and application of cable materials in ultra-large-span cable-supported bridges.
万方数据
维普
