Research On Complete Design And Construction Of Large Steel Tank Structures

In this paper,the characteristics of the coal chemical liquids storage and transportation construction projects,learn from the results of research and practice of large steel tanks,systems analysis of the factors affecting the design and construction phase of a steel tank structure.By studying this topic,analyze the design and construction process,the impact of a large steel tank material selection,design,construction techniques and other aspects of the overall structure of the tank,and construction projects related to the structure of the program study for instance design check.By analyzing the tank design elements,the analysis process,the installation process,the prosecution trial discovery process,factors that affect the structure of the main tank in the following areas:(1)Design principles: the tank design is reasonable will directly affect the installation ease of construction and the reliability of the tank.From economy and practicability,reliability and so on multiple dimensions to determine the main design parameters,design pressure,design temperature,test pressure,welding joint coefficient,corrosion allowance,after the main parameters need to be careful to choose other design parameters,such as material selection,the category division,structure size,selection of roof and the load,wall thickness,opening reinforcement and support and accessories,technical requirements,etc.;(2)Manufacturing principles: the control of raw materials is the origin of tank manufacture and installation quality,raw material procurement process,all aspects related to the quality,cost,schedule,purchase qualified products is prerequisite to ensure the quality of storage tank.Materials arrived at the scene in accordance with the design and specification requirements,shall be in material for review and inspection,the inspection qualified rear can put into use,strict process control to facilitate the implementation of the construction management.Prefabricated on raw materials,processing is the core of the whole manufacturing process,welding process,welding quality is Paramount,fully considering the influence of the welding process of structure is necessary,welding quality management usually by appearance inspection,examination,nondestructive testing for sealing,not only need to visual inspection of weld forming,should be to focus on the parent metal heat affected area,at the same time,as far as possible to reduce material deformation caused by welding.Welding residual stress in the storage tank in the process of using the significant hidden danger,therefore to eliminate the residual stress is security construction service tenet,the method is often used heat treatment method,as statutes,vibration method,heat treatment method and vibration method is relatively widely used;(3)Installation principles: storage tank wall panels,roof material after cutting,processing of roller bed has been the formation of good surface,therefore when hoisting and stored should be appropriate clamping fixture reduce caused by hoisting and storing plate curvature of the case.In the process of welding and assembling,fixed should carry on spot welding,at the same time reduce the probability of welding deformation reasonable decorate fixture.Anticorrosive paint quality of storage tank is related to the storage tank structure durability,rust removal process,paint quality,the quality of the film thickness is one of the important indicators to ensure tank structure durability;Through a series of research and analysis and demonstration,to identify factors that affect the design of the tank structure,manufacturing considerations,process inspection and installation process factors influencing factors for tank design,manufacture,install strong basis proposed.