预装式变电站箱体运输受力数值分析

Numerical Analysis of Transportation Force of Prefabricated Substation Box

预装式变电站箱体内部承载重型电气设备,在运输途中会遇到路面颠簸,结构性能受到影响。对此,对预装式变电站箱体运输受力进行数值分析。对运输车辆及道路表面进行建模,采用虚拟样机对减速带、伸缩缝、高速不平整路面工况进行运动学仿真。通过施加不同激励和载荷,获取运输车辆在多种工况下的运动学数据,并选取最大竖直方向加速度作为有限元分析的输入数据。模拟运输车辆在动态条件下所承受的最大载荷,分析结果表明,预装式变电站箱体能够满足许用应力要求,变形量仅为1.0242 mm,结构不会产生破坏性。

The prefabricated substation box carries heavy electrical equipment inside,and the road bump will be encountered during transportation,and the structural performance will be affected.In this regard,the transportation force of the prefabricated substation box was numerically analyzed.The transport vehicle and road surface were modeled,and the virtual prototype was used to simulate the kinematics of speed bump,expansion joint,and high-speed uneven road surface working conditions.By applying different excitations and loads,the kinematics data of the transport vehicle under various working conditions were obtained,and the maximum vertical acceleration was selected as the input data for finite element analysis.The maximum load of the transport vehicle under dynamic condition was simulated,the analysis result shows that the prefabricated substation box can meet the allowable stress requirement,the deformation is only 1.0242 mm,and the structure will not be destructive.