林业科学2026，Vol.62Issue(9)：53-61,9.DOI:10.11707/j.1001-7488.LYKX20250698
双承载索多跨索道鞍座两端拉力模型与验证
Model and Verification of Tension at Both Ends of the Saddle of a Multi-Span Cableway with Double Carrying Cables
摘要
Abstract
[Objective]This study aims to address the problem of insufficient accuracy in traditional calculation methods for analyzing the tension of the carrying cables at both ends of horizontal-curved saddles in double-carrying-cable multi-span ropeways,and to provide a reliable theoretical basis and technical support for the design and safety assessment of such ropeways.[Method]Considering the self-weight of the carrying cables and the friction effect between the cables and the saddles,a mechanical model of the cable tension at both ends of the horizontal-curved saddle was established based on the parabolic theory.Factors such as elastic elongation,chord length shortening,and temperature variation were incorporated to correct the model under loaded conditions.The 49#double-carrying-cable multi-span ropeway of the Xiamen Greenway Project was used as the research object,the tension data was measured under unloaded and loaded conditions to validate the model,and a sensitivity analysis was conducted on key parameters.[Result]Under unloaded conditions,the maximum relative error between the model calculations and measured values was 3.42%,and under loaded conditions,the maximum relative error was 3.95%,both of which were lower than the engineering tolerance threshold of 5%.The sensitivity analysis indicated that the friction coefficient was a key sensitive parameter affecting the model's calculation results:a±10%variation in the friction coefficient leads to approximately±3%deviation in tension.Temperature variation had a smaller effect:a±10℃temperature fluctuation resulted in a relative change rate below 1.1%.[Conclusion]The proposed tension model for both ends of the horizontal-curved saddle exhibits high calculation accuracy and strong engineering applicability,which can effectively support tension control,structural design,and safety assessment of double-carrying-cable multi-span cargo ropeways.关键词
双承载索多跨索道/平曲鞍座/拉力模型/抛物线理论/敏感性分析Key words
double-carrying-cable multi-span ropeway/horizontal-curved saddle/tension model/parabolic theory/sensitivity analysis分类
农业科技引用本文复制引用
胡宝森,周成军,郑丽凤,巫志龙,周新年..双承载索多跨索道鞍座两端拉力模型与验证[J].林业科学,2026,62(9):53-61,9.基金项目
国家教育部"工程索道"国家精品在线开放课程资助项目(教高函[2019]1号) （教高函[2019]1号）
钢丝绳无损检测设备驱动系统研发与试制(113/KFB22104XA) （113/KFB22104XA）
双承载索货运索道设计软件开发(113/KH200338A). （113/KH200338A）
