双跑车吊装索道系统起吊过程的动力学响应分析  

Dynamic response analysis of hoisting process in dual trolley cableway systems

作　　者：黄益智 冯辉荣 潘航 池毓本 王琳祎 卓冰倩 HUANG Yizhi;FENG Huirong;PAN Hang;CHI Yuben;WANG Linyi;ZHUO Bingqian(College of Transportation and Civil Engineering,Fujian Agriculture and Forestry University,Fuzhou 350007,China)

机构地区：[1]福建农林大学交通与土木工程学院,福州350007

出　　处：《哈尔滨商业大学学报(自然科学版)》2025年第2期207-213,共7页Journal of Harbin University of Commerce:Natural Sciences Edition

基　　金：福建农林大学科技创新专项基金项目(CXZX2019131S);中央引导地方科技发展专项(2022L3007)。

摘　　要：尽管索道系统在各类工程领域中得到广泛应用,但目前针对双跑车吊装索道系统在吊装过程中的响应问题尚缺乏有效的动力学分析理论.以工程中常见的双跑车吊装索道为研究对象,基于桥式起重机的起吊原理,对双跑车吊装索道系统的起吊过程进行了动力学建模.综合考虑悬索结构与跑车轮钢非线性接触问题,引用赫兹接触理论,得到了跑车与悬索的等效接触刚度;根据悬索结构的特殊性,将其假设为细直长梁结构,得到起吊点处的等效质量.在悬索结构的跨中最不利作业点处设立两种起吊方案,结合工程实例计算获得两种起吊方案下的技术参数,分析了等效刚度和等效质量与起吊点位置之间的关系.选择在一种起吊方案下,结合起吊阶段划分分析和数值计算,获得每阶段下的初始条件,运用牛顿第二定律和影响系数法建立系统的动力学模型,并利用Matlab进行数值仿真.仿真分析结果表明,起吊过程中重物、跑车的竖直位移和重物的转动位移均存在较为明显的响应,在起吊过程中重物、跑车存在微小的竖向移动,且重物会产生微小的转动情况,在起吊末阶段,即重物离地瞬间,钢索结构会产生除了静张力以外的动张力进而引起整个系统的振动.所建立的动力学分析理论能够为双跑车吊装索道的工程设计提供一定的理论指导.Although cableway transport systems were widely used in various engineering fields,there was still a lack of effective dynamic analysis theories for the response issues during the hoisting process of dual trolley cableway systems.This paper took the commonly used dual trolley cableway in engineering as the research object and conducts dynamic modeling of the hoisting process of the dual trolley cableway system based on the hoisting principle of the bridge crane.Initially,considering the nonlinear contact problem between the cable structure and the trolley wheel steel,the Hertz contact theory was applied to obtain the equivalent contact stiffness between the trolley and the cable.Given the special nature of the cable structure,it was assumed to be a fine straight long beam structure to determine the equivalent mass at the hoisting point.The two hoisting schemes were set up at the most disadvantageous operating point in the middle of the cable structure.Technical parameters under these two hoisting schemes were obtained through calculation with engineering examples,clarifying the relationship between the equivalent stiffness,equivalent mass,and the position of the hoisting point.Subsequently,by choosing one hoisting scheme,combined with the analysis of the hoisting phase division and numerical calculations,the initial conditions for each phase were obtained.The dynamics model of the system was established using Newton s second law and the influence coefficient method,and Matlab was used for numerical simulation.The simulation results showed the vertical displacement response of the load and trolley during the hoisting process and the rotational response of the load,confirming that there was a slight vertical movement of the load and trolley,and the load will undergo slight rotation.At the final stage of hoisting,when the load lifts off the ground,the cable structure will generate dynamic tension in addition to the static tension,causing vibration in the entire system.The dynamic analysis theory established in this

关 键 词：工程索道 双跑车 索道吊装 振动响应 数值分析 

分 类 号：U18[交通运输工程] O313[理学—一般力学与力学基础]