H steel is a kind of sectional area distribution more optimization, high strength to weight ratio of economic section profile is more reasonable, because of its section and English letter "H" the same name. Due to various parts of H type steel are arranged at right angles, so the H type steel in all directions has the advantages of high anti bending ability, simple construction, saving cost and light weight structure, has been widely applied.
H steel is a steel with a new economic construction. H type steel cross section shape is reasonable in economy, good mechanical properties, rolling section of each point on the extended a uniform, small internal stress, compared with ordinary I-beam section modulus, with large, light weight, saving metal advantages, can make the structure reduces 30-40%; because of its inner and outer side parallel leg, leg end is a right angle, assembled components, welding, riveting work can save up to 25%. Commonly used in the requirements of bearing capacity, good stability of large section of the building (such as buildings, high-rise building, bridge, etc.) as well as the ship, lifting the transport machinery, equipment foundation, support, foundation pile.
Introduction
H steel is a kind of mechanical properties by optimization of the development section of I-beam and become more economical section steel is excellent, especially the section and English letter "H" the same name. Its features are as follows:
The flange width, lateral stiffness.
The anti bending ability, than the I-shaped steel is about 5%-10%.
The flange surface parallel connection makes two, processing, installation is simple.
We compared with the welding I-steel, low cost, high precision, small residual stress, no welding material and welding seam detection expensive, saving steel structure fabrication cost about 30%.
The same section load. The structure of hot rolled H steel than the traditional steel structure weight 15%-20%.
We compared with the concrete structure, the structure of hot rolled H steel can be increased 6% use area, and the structure weight of 20% a 30%, reduce the internal force of structure design.
The H type steel can be processed into a T type steel, honeycomb beam can be combined by the formation of various section form, design and manufacture of greatly satisfy the demand of engineering.
H type steel divided into hot-rolled H section steel and welding of H steel (H) two, hot-rolled H section steel is divided into wide flange steel H (HW) of flange type H steel (HM) and narrow flange steel H (HN) three.
HW is a H type steel height and width of flange is basically the same; mainly used for reinforced concrete frame column steel concrete column, also known as rigid steel column; in the steel structure is mainly used for the column
HM is a H type steel height and width of flange is roughly 1.33~~1.75 mainly in the steel structure: as steel frame column in frame structure under dynamic load is used for frame beam; for example: equipment platform
HN is a H type steel height and flange width ratio is greater than or equal to 2, mainly for the use of the equivalent of I-steel beam; HN steel;
H
2
The main material of H type steel with Q235B, SM490, SS400, Q235B, Q345, Q345B etc..
