塔式起重机顶升架焊接顺序优化仿真  

Welding Sequence Optimal Simulation of Tower Crane Jacking Frame

作　　者：叶廷锴 马思群[1] 聂春戈[1] 詹建 杨方涛 YE Tingkai;MA Siqun;NIE Chunge;ZHAN Jian;YANG Fangtao(School of Locomotive and Vehicle Engineering,Dalian Jiaotong University,Dalian 116028,China;Dalian Gaster Engineering Machinery Technology Co.,Ltd.,Dalian 116022,China)

机构地区：[1]大连交通大学机车车辆工程学院,辽宁大连116028 [2]大连盖斯特工程机械技术有限公司,辽宁大连116022

出　　处：《机械工程师》2024年第8期20-23,共4页Mechanical Engineer

基　　金：2022年度辽宁省普通高等教育本科教学改革研究项目(10150-312);辽宁省交通运输厅交通科技计划项目(202151);国家高速列车技术创新中心研发计划项目(CXKY-02-01-02(2020))。

摘　　要：顶升架是为适应不同的施工需求利用套架和液压系统对塔式起重机的高度进行调整的顶升结构。其作为一种典型的焊接结构,焊接时产生的残余变形会对塔机的安全应用产生重要影响。利用固有应变法,首先建立以二维网格为主的有限元模型,利用双椭球热源模型,并根据实际生产工艺,通过焊接软件对不同焊接顺序塔式起重机的顶升架进行焊接数值模拟对比,并确定最优焊接顺序。结果表明:经过对焊接顺序进行优化,能有效控制焊接产生的残余应力与变形,该研究具有一定的现实指导意义。The jacking frame is a jacking structure that adjusts the height of the tower crane by using sleeve frame and hydraulic system to meet different construction needs.As a typical welding structure,the residual deformation generated during welding has an important impact on the safety application of tower crane.Using the inherent strain method,this paper establishes the finite element model based on two-dimensional grid,and uses the double ellipsoid heat source model.According to the actual production process,the welding numerical simulation and comparison of the jacking frame of the tower crane with different welding sequences are carried out using welding software,and the optimal welding sequence is determined.The results show that the residual stress and deformation caused by welding can be effectively controlled by optimizing the welding sequence.The research content of this paper has certain practical guiding significance.

关 键 词：塔式起重机 顶升架 残余变形 焊接顺序 

分 类 号：TU213.3[建筑科学—建筑设计及理论]