焊接顺序对升船机承船厢结构变形的影响研究

Effect of Welding Sequence on Structure Deformation of Ship Reception Chamber of Ship Lift

升船机作为航道上水位落差较大位置的船舶通航建筑物,其承船厢结构复杂,焊接加工难度较大。本文首先利用有限元软件ANSYS Workbench计算不同焊接顺序下承船厢主横梁结构变形,对主横梁纵向、横向、垂直向三个方向的焊接变形情况进行分析。纵向收缩变形采用预留收缩变形量来达到设计要求,横向和垂直向采用设计的焊接顺序方案E(焊接顺序:下翼板-隔板-内外腹板-上翼板)可获得较小的焊接变形,并满足设计要求。然后进一步通过工程实际应用验证。本文所提出的方法能够较好地控制承船厢结构的制造变形,同时能够大大提高生产效率并降低生产成本。

As a navigable building in the position of large water level drop in waterway, ship lift has complex structure and difficult manufacture and is difficult to be welded .The finite element software ANSYS Workbench was used to calculate the structural deformation of the main cross beam of the ship carriage under different welding sequences.The longitudinal, transverse and vertical welding deformations of the main cross beam were analyzed.The design requirements could be met by using the reserved contraction deformation in the longitudinal contraction deformation.The design requirements could be met by adopting the scheme E (welding sequence: lower flange plate, partition, inner and outer web and upper flange plate) in the transverse and vertical directions,and the welding deformation was smaller.Through the practical application of engineering, the proposed method could control the deformation of the ship carriage structure well, and it could greatly increase production efficiency and reduce production cost.