What is the difference between I-beam and H steel?
H steel is widely used in steel structure construction. It has many differences comparing with i-beam. The first is the flange, followed by the inner edge of the flange without tilting, parallel to the upper and lower surfaces. The section characteristics of H steel are obviously better than those of traditional I-beam, channel steel and angle steel.H section steel is a kind of economical section high efficiency profile with more optimized sectional area distribution and stronger weight ratio. It is named after the English letter "H". The two outer sections of the H steel have no inclination, and they are straight. This makes the welding of H steel more simple than that of I-beam, the mechanical performance of unit weight is better, and it can save a great deal of material and construction time.The I-beam section is well pressed and resistant to pulling, but the section size is too narrow to resist torsion. H steel, on the other hand, has its advantages and disadvantages.
I like the name suggests, is a kind of I-shaped section steel flange on the inner surface of slope is generally 1:6, the flange and the thickness of thin, resulting in two main characteristics of I-beam section plane is huge, just to play strength characteristics in the application. Although there has been a thicker I-beam on the I-beam market, the structure of I-beam has decided its torsional performance.
China's hot-rolled H steel GB (GB/T11263-1998) H steel is divided into narrow flange, wide flange and steel pile three categories, its code names are Hz, HK and hu. The narrow flange H steel is suitable for beams or columns, while wide flange H and H steel piles are suitable for axial compression members or bending members. Compared with H steel, the W, IX and iy are better than H steel under equal weight condition.The length of the I-beam is small and the height is big. It can only bear the force in one direction.H steel is deep in groove and big in thickness and can bear two directions of force.With the development of steel structure construction, only I-beam is not available, that is thickening I-beam, used for load-bearing columns, easy to instability.I-beam can only be used for cross beams, and H steel can be used for structural load-bearing columns.
The difference and application description of H steel and I-beamI-steel whether ordinary or light, because the section size are relatively high and narrow, so the moment of inertia of the main sections of the two sleeve is large, therefore, generally only can be directly used in the web plane bending member or the composition of lattice stress components. It is not suitable for the axial compression member or the bent member perpendicular to the web plane, which has great limitations in its application.H section steel is a kind of economical and economical cutting surface profile (other cold bending thin wall steel, pressed steel plate, etc.). Because of the reasonable cross-section shape, they can make steel more effective and improve the bearing capacity. Unlike ordinary I-beam, the flange of H steel is widened, and the inner and outer surfaces are usually parallel so that it is easy to connect with high strength bolts and other components. Its size constitutes a reasonable series, complete model, easy to design and use. (in addition to crane girders)The flanges of H steel are all of equal thickness, there is a rolling cross section, and there is a combined section composed of 3 plates welded together. I-beam is a rolling cross section, due to poor production process, flange within the edge of the 1:10 slope. H type steel rolling is different from ordinary I-beam with only one set of horizontal roll, because of its wide flange and no inclination (or inclination is to be very small), a group of vertical roll and roll, therefore, the rolling process and equipment than the conventional mill complex. The maximum rolled H steel produced in China can be 800mm high and can only be welded composite sections.
