桥梁缆索热铸锚固材料及粘结性能研究  

Study on hot cast anchoring materials and their bonding performance for bridge cables

作　　者：沈锐利[1] 王路 费汉兵 周宁杰 强强 邹旭伟 SHEN Ruili;WANG Lu;FEI Hanbing;ZHOU Ningjie;QIANG qiang;ZOU Xuwei(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,China;FASTEN Group Co.Ltd.,Jiangyin 214445,China)

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]西南科技大学土木工程与建筑学院,四川绵阳621010 [3]法尔胜泓昇集团有限公司,江苏江阴214445

出　　处：《现代交通与冶金材料》2024年第5期24-28,41,共6页Modern Transportation and Metallurgical Materials

基　　金：国家重点研发计划资助项目(2022YFB3706702)。

摘　　要：缆索承重桥梁跨越能力的需求驱动缆索钢丝强度及其锚固强度的提升。以桥梁缆索常用的热铸锚为对象,开展了多种新型锌基多元合金锚固材料的力学性能试验,分析了不同成分及含量对合金抗拉强度、抗压强度、弹性模量及抗蠕变性能的影响。针对优化的5种锚固材料开展了拉拔试验,对比了不同参数下的粘结性能。结果表明,ZnAl9Cu1MgRE合金具有抗拉强度及压缩屈服强度高、弹性模量低、抗蠕变性能好的力学特点,综合性能良好;锚固破坏模式分为钢丝拔出和钢丝破断两类;相对而言,ZnAl6Cu1合金的粘结性能最佳,ZnAl9Cu1MgRE合金的粘结性能次之。The demand for the increasing crossing capacity of cable-supported bridges leads to improvements in the strength of cable steel wires and their anchoring strength.The mechanical properties of multiple new zinc-based multi-element alloy anchoring materials are investigated by using the commonly employed hot cast anchor for bridge cables as the object of the study.The impact of varying compositions and concentrations on the tensile strength,compressive strength,elastic modulus,and creep resistance of the alloy is analyzed.Pull-out tests are conducted on five optimized anchoring materials,and the bonding performance under different parameters is compared.The results demonstrate that the ZnA19CulMgRE alloy exhibits high tensile strength and compressive yield strength,low elastic modulus,and excellent creep resistance,thereby exhibiting an optimal overall performance.The identified failure modes are classified as steel wire pull-out and steel wire rupture.The ZnAl6Cul alloy demonstrates the most favorable bonding performance,followed by the ZnA19CulMgRE alloy.

关 键 词：桥梁缆索 锚固材料 粘结性能 试验研究 

分 类 号：U443.38[建筑科学—桥梁与隧道工程] TG142.33[交通运输工程—道路与铁道工程]