超高强桥梁缆索用多元合金锚固材料研究
Discussion on the research of multi-alloy anchoring materials for ultra-high-strength bridge cables
费汉兵 1王彦策 1吴琼1
作者信息
- 1. 法尔胜泓昇集团有限公司,江苏 江阴 214445
- 折叠
摘要
桥梁缆索采用热铸锚方式锚固,具有强度高、耐久性好的优点,适于缆索百年服役的要求.分析了热铸锚的结构和锚固机理,合金锚固材料是影响热铸锚锚固性能和耐久性的主要因素,而Al,Cu,Mg,RE等成分和含量决定了合金锚固材料的性能.针对2100 MPa及以上强度超高强缆索,提出了热铸锚用合金锚固材料的物理性能、力学性能、防腐性能和流动性要求.根据这些影响因素和性能要求,建议按"性能指标构建‒成分体系设计‒模型试验研究‒灌锚装备研发‒灌锚工艺研究"的路线进行新型多元合金锚固材料研究.
Abstract
Hot-cast anchors,with the advantages of high strength and durability,are adapted to the re-quirements of a 100-year service life of the bridge cables.The structure and anchoring mechanism of hot-cast anchors are analyzed.The alloy anchoring material is the main factor affecting the anchoring performance and durability of hot-cast anchors,whereas the composition and content of Al,Cu,Mg,and RE determine the performance of the alloy anchoring material.For the ultra-high-strength bridge cables of 2100 MPa and above,the physical properties,mechanical properties,corrosion resistance and fluidity requirements of the alloy anchoring materials for its hot-cast anchors are presented.Based on these influencing factors and performance requirements,it is recommended to carry out research on the new multi-alloy anchoring materials according to the route of"construction of performance indica-tors-design of component system-model test research-research and development of anchoring equip-ment-research on anchoring process".
关键词
桥梁缆索/热铸锚/锚固材料/超高强/多元合金Key words
bridge cable/hot-cast anchor/anchoring material/ultra-high-strength/multi-alloy引用本文复制引用
基金项目
国家重点研发计划项目(2022YFB3706702)
江苏省科技成果转化专项资金资助项目(BA2023029)
出版年
2024
NETL
NSTL
维普
万方数据