H-shaped steel structural part and production method thereof

Abstract

The invention provides an H-shaped steel structural part and a production method thereof. According to the H-shaped steel structural part, two opposite flange plates are provided, a web plate of which the cross section is wave-shaped is fixedly welded between the middles of the two flange plates longitudinally, and inwards folded edges are formed on two rims of each flange plate. By the H-shaped steel structural part, stiffening force is formed after rims of the flange plates are folded, so that the limit of a width-to-thickness ratio is greatly broken through, and mechanical properties of steel is fully developed; the web plate of which the cross section is wave-shaped has extremely high shear buckling resisting capacity, so that the web plate can be thinned, and a stiffening plate is not required; and advantages of the flange plates and the web plate are integrated, so that the rigidity of the structural part is enhanced, deformation of the structural part under the action of external force is reduced, the load-bearing property of the structural part is effectively improved, the dead loads of main load-bearing members such as beams and columns are reduced, and the using effect is improved. The steel structural part can be in a uniform cross-section shape or a variable cross-section shape and can be widely applied to steel load-bearing members.

Description

technical field [0001] The invention relates to a steel structure part, in particular to an H-shaped steel structure part for building and a production method thereof. Background technique [0002] Steel structure buildings, especially steel structure portal frame light houses, are widely used in industrial and civil buildings. At present, in ordinary single-storey industrial factory buildings and storage buildings, the main load-bearing components, namely beams and columns, are welded or hot-rolled H-shaped steel, but the cross-sectional form of this component does not give full play to all the characteristics of steel. It is mainly manifested in two aspects: First, the flange plate is limited by the width-to-thickness ratio. Article 6.1.1 of CECS 102:2002 stipulates that the ratio of the free overhang width b of the compression flange of the section member to its thickness t should not be greater than If Q345 steel is used, the width-to-thickness ratio is about 12, and m...

AI Technical Summary

Problems solved by technology

Second, the web is also limited by the height-to-thickness ratio. Article 6.1.1 of CECS 102:2002 stipulates that the calculated height h of the web of the section member w with its thickness t w The ratio should not be greater than If Q345 steel is used, the height-to-thickness ratio is about 206. In the actual manufacturing process, an excessively large height-to-thickness ratio will cause excessive web deformation after cutting, welding, and shot blasting, which will affect the next process. It has become a headache for many steel structure production and construction acceptance, and the use effect is difficult to guarantee

Images