森林与环境学报2017，Vol.37Issue(3)：302-308,7.DOI:10.13324/j.cnki.jfcf.2017.03.009
重刚比对悬索静态位形影响的建模与分析
Modeling and analysis of the static configuration of cableway suspension by the ratio of cable weight to stiffness
摘要
Abstract
This paper intends to investigate the influence of self-weight, stiffness and distributed load on the static equilibrium configuration of suspension cables.The static suspension configuration of a level-supported cableway was analyzed by classifying cable states and force equilibrium analysis in a mathematical model of a cable element.Using dimensionless parameters, the basic static performance of a suspension cable in various conditions were analyzed including a natural state, unload self-weight state and distributed load state. A mathematical model of the static tension considering the cable unit length weight-to-stiffness ratio, deflection, and bearing spacing under the action of self-weight and cable distributed load was established. The paper found that , for a small ratio to an extent of β≤10-2, the cable static state coincided in general. The cable stiffness played a leading role in the static analysis and the static suspension cable can be treated as an inextensible cable. For a high weight-to-stiffness ratio, the self-weight and distributed load were significant in the static state analysis. In these conditions, it was concluded that the greater the self-weight and the distributed load, the larger the central deflection of suspension cable. When the cable length with a small weight-to-stiffness ratio approached the original span, the maximum tension and the horizontal tension obviously increased. On the other hand, the increase in tension was not obvious for a high weight-to-stiffness ratio.Therefore, it was concluded in this paper that the suspension cable with a high weight-to-stiffness ratio was governed by mainly elastic deformation and yield failure due to its small elastic modulus. Consequently, it was not advisable to blindly tighten a suspension cable in engineering practice. Lastly, the configuration parameters of static suspension cables were verified by experiments to verify the feasibility and accuracy of the model.The relative error between the experimental results and theoretical results were within 4.95% and less than 5% of the engineering application accuracy requirements.关键词
工程索道/悬索单位长度/重刚比/刚度/静态位形Key words
engineering cableway/unit length of cable/weight-to-stiffness ratio/stiffness/static configuration分类
数理科学引用本文复制引用
冯辉荣,周成军,周新年,LIM Cheewah,陈立群..重刚比对悬索静态位形影响的建模与分析[J].森林与环境学报,2017,37(3):302-308,7.基金项目
国家自然科学基金重点项目(11232009) （11232009）
国家"工程索道"精品资源共享课程项目(教高函[2013]115号111zj0588) （教高函[2013]115号111zj0588）
福建省自然科学基金项目(2016J01664) （2016J01664）
福建省工程索道工程技术研究中心开放课题基金项目(ptjh16006) （ptjh16006）
福建农林大学高水平大学建设项目(113-612014018) （113-612014018）
福建农林大学科技创新专项基金项目(KFA17037A). （KFA17037A）
