智能照明A类灯杆有限元建模及其力学特性分析  

Finite element modeling and mechanical characteristic analysis of class a light pole for intelligent lighting

作　　者：周戈 黄伟[2] ZhOU Ge;HUANG Wei

机构地区：[1]武汉地产开发投资集团有限公司,湖北武汉430022 [2]防灾减灾湖北省重点实验室(三峡大学),湖北宜昌443002

出　　处：《智能城市》2019年第19期17-20,共4页Intelligent City

摘　　要：为了掌握智慧照明A类灯杆在外荷载作用下的力学特性,以应用于智慧城市中的A类照明杆为研究对象,采用了大型结构有限元软件,建立了A类灯的空间精细化杆单元模型,分析了该类灯杆在自重、加载设备、风荷载和雪荷载作用下的力学响应,研究其变形、应力及模态情况,并与理论分析值进行比较。结果表明:A类灯杆在外荷载作用下最大位移为384.48 mm,最大应力为204 MPa,挠度和强度均满足设计要求;A类灯杆基频率为1.342 Hz时,主杆和横臂杆出现左右摆动,应避免该模态的激发;通过与理论对比,验证了有限元结果的正确性。In order to grasp the mechanical characteristics of class A lamp pole for intelligent lighting under external loads, taking class a lamp pole applied in Intelligent city as the research object,the spatial refined pole element model of main pole and cross arm pole was established by using large-scale structural finite element software,and the self-weight,loading equipment, wind load and snow load of lamp pole were analyzed. The mechanical response under the action is studied,including the deformation,stress and modal condition,and compared with the theoretical analysis value. The results show that the maximum displacement is 384.48 mm,the maximum stress is 204 MPa,and the deflection and strength meet the design requirements. When the base frequency of class A lamp pole is 1.342 Hz,the main pole and the cross arm pole oscillate up and down,so the excitation of the mode should be avoided. The correctness of the finite element results is verified by comparing with the theory.

关 键 词：智慧照明 A类灯杆 有限元分析 强度 模态 

分 类 号：TU113.666[建筑科学—建筑理论]