地震工况下自动扶梯桁架结构分析研究  

Analysis of escalator truss structure under seismic conditions

作　　者：杨天玲 林森 陈义东 YANG Tian-ling;LIN Sen;CHEN Yi-dong(Institute of Intelligent Manufacturing,Zhejiang Institute of Mechanical&Electrical Engineering,Hangzhou 310053,China;China United Engineering Co.,Ltd.,Hangzhou 310052,China;Hangzhou LiveLab Education Technology Co.,Ltd.,Hangzhou 310000,China)

机构地区：[1]浙江机电职业技术学院智能制造学院,浙江杭州310053 [2]中国联合工程有限公司,浙江杭州310052 [3]杭州领学科创教育科技有限公司,浙江杭州310000

出　　处：《机电工程》2022年第12期1784-1788,共5页Journal of Mechanical & Electrical Engineering

基　　金：中华职业教育社第一届黄炎培职业教育思想研究规划课题资助项目(ZJS2022YB171);浙江省人力资源和社会保障科学研究课题资助项目(2022083)。

摘　　要：针对自动扶梯在地震工况时受力分析这一问题,以合同案例为对象,应用有限元分析方法,对自动扶梯在地震工况下桁架结构强度做了分析计算研究,对不同地震加速度时桁架加强方案和土建处理方式进行了全面总结。首先,对比了不同国家地震标准载荷工况的区别,利用静力学分析和有限元简化方法,在基础结构分析的基础上,增加了地震载荷的分析;其次,采用ANSYS参数化设计语言编程方式,将不同方向载荷同时加载到自动扶梯桁架上,得到了不同地震加速度时桁架的型材规格;最后,在桁架结构确定后,对土建处理方案做了进一步分析,描述了头部固定和中间支撑固定的不同方式,对土建延伸量做了阐述和总结。研究结果表明:地震工况时,应用有限元分析方法,计算得到了不同地震加速度时桁架加强方案,可满足强度及稳定性标准要求,为此类结构地震工况分析及处理提供了一种可参考的解决方式。Aiming at the problem of stress analysis of escalator under the seismic load,taking the example of contract case as an instruction,the strength of escalator truss structure under seismic load was analyzed and summarized by finite element analysis method,and the truss reinforcement and civil engineering treatment method under seismic condition were comprehensively and deeply understood.Firstly,the differences of seismic load cases in different standard were compared.Using static analysis and finite element simplification method,the seismic load was added on the basis of basic structure analysis.Then,using ANSYS parametric design language(APDL),the profile specifications of truss with different seismic accelerations were obtained by calculation and analysis.Finally,after the improvement structure was determined,the civil engineering treatment methods were further analyzed and summarized.The endpoint fixation and intermediate support fixation were described.The civil engineering extension was calculated and summarized.The research results show that,the finite element analysis method was practical when it was applied to the seismic condition of escalator truss.The reinforcement escalator truss was calculated and summarized under different seismic acceleration,and the strength and stability of truss can meets the standard requirements.This research method provided a practical solution for this kind of structure under the seismic condition.

关 键 词：运输机械 桁架结构强度 自动扶梯 ANSYS参数化设计语言 静力学分析 地震载荷 

分 类 号：TH236[机械工程—机械制造及自动化]