纵横向组合布置的工业厂房结构设计简析

Briefly analyzing a structural design of the industrial workshop with longitudinal and transverse combined layout

某船厂车间部分区域设置了沿车间横向方向行驶的吊车后成为了纵横组合布置的工业厂房,增加了结构设计的复杂性。对于该型车间,需明确纵向及横向的结构体系及相关传力路径,计算分析需要建立有限元模型,并按实际结构构件输入,从而能较完整地考虑排架柱、吊车梁、柱间支撑及屋盖支撑等组成车间结构的空间效应,同时应将恒载、活载、风荷载及吊车荷载按实际工况进行荷载组合从而得到合理的内力值进行构件承载力及变形计算。对于双向无支撑排架结构中承受双向弯矩的四肢格构式钢管混凝土柱,可按目前现行的《钢管混凝土结构技术规范》中公式并参考叠加《钢结构设计标准》中考虑平面外弯矩的计算项进行该钢管混凝土柱的整体承载力及单肢稳定承载力的验算。

A crane running along the transverse direction of the workshop was installed in a part of the workshop,so it became an industrial workshop with a longitudinal and transverse combination,which increased the complexity of the structural design.For this workshop,the longitudinal and transverse structural systems and force transmission paths need to be clarified.The calculation and analysis of this kind of structure system needs to creat a finite element model with the actual structural components such as the bent frame columns、crane beams and column bracing.At the same time,the dead load,live load,wind load and crane load should be combined according to the actual working conditions to obtain a reasonable internal force value for component bearing capacity and deformation calculation.For the four-limbs lattice CFST column under biaxial loading in two-way unbraced bent frame structure,the current formula in《Technical code for concrete filled steel tubular structures》superimposed calculation terms that take into account out-of-plane bending moments in《Standard for design of steel structure》can be used to check the overall capacity of the CFST column and the stable bearing capacity of the single limb.