缆索吊装索鞍一体式新型组合式锚碇力学性能研究  

Study on Mechanical Properties of Cable HoistingSaddle Integrated New Combined Anchorage

作　　者：李志锋[1] 刁锡钢 张谢东[1] 陈小佳[1] LI Zhifeng;DIAO Xigang;ZHANG Xiedong;CHEN Xiaojia(Wuhan University of Technology,School of Transportation and Logistics Engineering,Wuhan 430063,China;Sichuan Transportation Construction Group Co.,Ltd.,Chengdu 610041,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063 [2]四川省交通建设集团股份有限公司,成都610041

出　　处：《交通科技》2023年第5期49-52,56,共5页Transportation Science & Technology

摘　　要：缆索吊装索鞍一体组合式锚碇是一种新型锚固结构,其工作阶段受力十分复杂,结合四川某大跨钢管混凝土拱桥建设工程并基于midas GTS NX有限元软件,对不同荷载组合下的新型组合式锚碇进行数值模拟,对其最大应力分布位置及锚索荷载占比进行分析。结果表明,新型组合式锚碇在复杂地形中具有更好的适用性,在不同荷载组合下,其最大拉应力及压应力均出现在荷载施加位置;增加主缆荷载会增大锚索的受力分配比例,增加扣索荷载会增加桩基及承台的受力分配比例;主缆荷载的增大会增加后排锚索的索力占比,扣索荷载的增大会增加前排锚索的索力占比。The combined anchorage with cable and saddle is a new type of anchorage structure,with complexity of stress at the working stage.Combined with the construction project of a long-span concrete-filled steel tube arch bridge in Sichuan Province and based on midas GTS NX finite element software,the numerical simulation of the new combined anchorage under different load combinations was carried out,and the maximum stress distribution position and the load proportion of the cable were analyzed.The results show that the new combined anchorage has better applicability in complex terrain.Under different load combinations,the maximum tensile stress and compressive stress of the new combined anchorage are at the loading position.Increasing the load of the main cable will increase the force distribution proportion of the anchor cable,while increasing the load of the cable will increase the force distribution proportion of pile foundation and cap.The increase of the main cable load will increase the cable force ratio of the rear anchor cable,and the increase of the buckle cable load will increase the cable force ratio of the front anchor cable.

关 键 词：新型组合式锚碇 预应力锚索 有限元数值模拟 索力监测 力学性能 

分 类 号：U443.24[建筑科学—桥梁与隧道工程]