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本文研究背景为沿海某港口厂房钢结构车间,形式为双肢格构柱、单层四跨双坡钢桁架结构,格构柱最大高度约28.4米,桁架梁及吊车梁最大跨度42米.因厂房跨度较大,柱高度较高,危险性较大,需对吊装方案的安全性进行验算,确保施工安全.本文通过Midas-gen软件分别对其中的双肢格构柱、桁架梁、吊车梁依据所在地的环境条件进行建模计算,分别验算吊装过程中的反力、挠度、关键位置变形,根据我国的吊车额定起重量确定在起吊所需要的吊装的吨位和台数.为该工程顺利实施吊装提供科学依据.
The research background of this paper is the workshop of a steel plant in a coastal port, which is in the form of double-limb lattice column and single-layer four-span double-slope steel truss structure. The maximum height of the lattice column is about 28.4 meters and the maximum span of truss girders and crane beams is 42 meters. The span of the plant is larger, the height of the column is higher and the risk is higher, the safety of the lifting scheme needs to be checked and the safety of the construction must be checked.Through Midas-gen software, According to the local environmental conditions, the model calculation is carried out, and the reaction force, deflection and key position deformation during hoisting process are checked respectively, and the tonnage and number of hoisting needed for lifting are determined according to the rated hoisting capacity of the crane in China. Provide a scientific basis.