Analysis Of Steel Structure Cutting And Assembly Size Deviation

In the steel structure,all kinds of steel components is the most important parts of the steel structure. The quality of the steel structures for steel structure performance has played a decsive role. And the processing technology of steel structure determines the steel components quality. Steel cutting is steel processing components of the most basic processes,its quality is closely related with the steel components section feature after assembly,at the same time it has a direct impact on the overall quality of the project. Because of processing dimension deviation and installation error reasons,the size of the structural elements will occur windage. The actual component after manufacture with design of the component geometry characteristic will be different. This difference is geometrical parameter uncertainty analysis of component. At present,the cutting quality of the steel research limited to cutting equipment itself control, steel structure component geometry parameters underminedess's statistical work is not comprehensive.This research object is steel structure processing enterprise of steel cutting and assembly process,explore the steel cutting and assembly's error and quality control.Aiming at the common steel cutting and assembly process,use a multi-stage sampling method and full inspection method,filed collection examined five different thickness shear steel plates,gas cutting steel and seven different section welding H-type steel in the steel structure processing enterprise,collected at 1130 block shear plate,300 gas cutting steel and 160 welding H-type steel's actual size data.Using the method of dynamic analysis's control chart and histogram analyse the actual data and sectional characteristic,and use the statistical methods discussed its size deviation.Get different thickness of steel obligate machining allowance and steel components section of the geometric parameter uncertainty analysis of statistical parameters. And analysis the main factors of influence size deviation, so it can provide reference for the revision of code for acceptance of construction quality of steel structuresand and unified standard for reliability design of engineering structures in the future.