Load Analysis And Optimization Design Of Supporting Platform For Gasoline Hydrogenation Unit

Steel structure supporting platforms are widely used in the production of petrochemical production.However,in the designing process of steel structure platform,security and stability analysis are usually lacked,which results in the wasting of material and the trouble of safety.The researching object of this paper is the supporting platform of gasoline hydrogenation unit in petrochemical industry.The static and dynamic analysis are carried out,and the optimal designing is carried out on the premise of ensuring the safety and stability of the structure.A large amount of materials are saved and the production cost is reduced.The main researching contents are as following.According to the gravity load of production equipment,snow load and seismic load,the load parameters of the supporting platform are determined.And the layout form of the supporting platform is determined,according to the construction specification of steel structure and the supporting condition of the equipment.At the same time,the main components such as the main beam,secondary beam and column of the supporting platform are designed,and the type and size of the section bar are established.The finite element model of the support platform is established by using Ansys,and the static analysis of the established platform model is carried out to verify the safety of the platform structure under static load.At the same time,the response of the platform structure under earthquake loading is analyzed by response spectrum analysis method.The maximum stress value of the platform structure under earthquake ground motion is 128 MPa,which the value is less than the allowable stress [?]158 MPa.The structure strength meets the safety standard requirements.Finally,to optimize the design of the supporting platform,Regarding both the lower weight of the 2th and 3th layers of H type steel and lower value of the deformation which under static load as the objectives of optimizing design,and the section size of the 2th and 3th layers of H type steel as the design variable.The stress value of the optimized frame steel structure which under the ground motion load is reduced by 3.9%.,and total amount of steel for supporting platform is reduced by 30.2% than before.The production cost is reduced obviously.