摘要
为了解吊点位置和吊索夹角变化对钢梁受力状态的影响,运用Midas Gen软件建立4种具有不同吊点位置和吊索夹角的钢梁有限元模型,进行吊装过程中的应力和变形分析。研究结果表明,当吊点和端部节点逐渐加大距离时,其悬臂段变形增加,钢梁跨中变形变小;当吊索夹角加大时,钢索应力减小,钢索所受拉力减小,钢索形变也减小;方案二中梁的中间段和悬臂段在吊装过程中同时达到变形和应力基本一致且处于较小状态,相对于其他3种情况更加安全一些。研究成果为依托工程中钢梁的吊装方案优化提供依据,对于其他工程项目中钢梁的吊装方案优化具有参考意义。
In order to understand the influence of the changes in the lifting point positions and the angles of the slings on the stress state of the steel beam,the Midas Gen software was used to establish finite element models of steel beams with four different lifting point positions and sling angles,and the stress and deformation analysis during the hoisting process was carried out.The research results show that when the distance between the lifting points and the end nodes gradually increases,the deformation of the cantilever section increases,and the deformation in the mid-span of the steel beam decreases;when the angle of the sling increases,the stress of the steel cable decreases,the tension on the steel cable decreases,and the deformation of the steel cable also decreases.In Scheme II,the middle section and the cantilever section of the beam simultaneously achieve basically the same deformation and stress during the hoisting process and are in a relatively small state,which is safer compared to the other three cases.The research results provide a basis for the optimization of the hoisting scheme of the steel beam in the supporting project and have reference significance for the optimization of the hoisting scheme of the steel beam in other engineering projects.
出处
《科技创新与应用》
2025年第18期97-100,104,共5页
Technology Innovation and Application
关键词
钢梁
吊装施工
吊点位置
有限元分析
吊索夹角
steel beam
hoisting construction
lifting point position
finite element analysis
sling angle
