Galvanized Q355b Structural Steel Fabrications Frame Construction

America Standard ASTM Fabricated Structural Steel Frame Construction and Design Detailing

Steel structure is a structure composed of steel materials, which is one of the main types of building structures. The structure is mainly composed of beams, steel columns, steel trusses and other components made of profiled steel and steel plates. It adopts silanization, pure manganese phosphating, washing and drying, galvanizing and other rust removal and rust prevention processes. Components or parts are usually connected by welding, bolts or rivets. Because of its light weight and easy construction, it is widely used in large-scale factory buildings, stadiums, and super high-rise areas. Steel structures are susceptible to corrosion. Generally, steel structures need to be derusted, galvanized or painted, and regularly maintained.

For steel structures, high-strength steels should be studied to greatly increase their yield point strength. In addition, new types of steels, such as H-shaped steel (also known as wide-flange steel) and T-shaped steel, as well as profiled steel plates, are rolled to adapt to large-span structures and The need for super high-rise buildings.

Advantage:
The steel component system has the comprehensive advantages of light weight, factory-made manufacturing, fast installation, short construction cycle, good seismic performance, fast investment recovery, and less environmental pollution. Compared with reinforced concrete structures, it has more The unique advantages of the three aspects of development, in the global scope, especially in developed countries and regions, steel components have been reasonably and widely used in the field of construction engineering.

Carrying capacity:
Practice has shown that the greater the force, the greater the deformation of the steel member. However, when the force is too large, the steel members will fracture or severe and significant plastic deformation, which will affect the normal work of the engineering structure. In order to ensure the normal working of engineering materials and structures under load, it is required that each steel member should have sufficient load-bearing capacity, also known as bearing capacity. The bearing capacity is mainly measured by the sufficient strength, stiffness and stability of the steel member.

Sufficient strength
Strength refers to the ability of a steel component to resist damage (fracture or permanent deformation). That is to say, no yield failure or fracture failure occurs under the load, and the ability to work safely and reliably is guaranteed. Strength is a basic requirement that all load-bearing members must meet, so it is also the focus of learning.

Sufficient stiffness
Stiffness refers to the ability of a steel member to resist deformation. If the steel member undergoes excessive deformation after being stressed, it will not work properly even if it has not been damaged. Therefore, the steel member must have sufficient stiffness, that is, no stiffness failure is allowed. Stiffness requirements are different for different types of components, and relevant standards and specifications should be consulted when applying.

Stability
Stability refers to the ability of a steel component to maintain its original equilibrium form (state) under the action of an external force.
The loss of stability is the phenomenon that the steel member suddenly changes the original equilibrium form when the pressure increases to a certain degree, which is referred to as instability. Some compressed thin-walled members may also suddenly change their original equilibrium form and become unstable. Therefore, these steel components should be required to have the ability to maintain their original equilibrium form, that is, have sufficient stability to ensure that they will not be unstable and damaged under the specified conditions of use.
The instability of the pressure bar generally occurs suddenly and is very destructive, so the pressure bar must have sufficient stability.
In summary, in order to ensure the safe and reliable working of steel members, members must have sufficient bearing capacity, that is, have sufficient strength, stiffness and stability, which are the three basic requirements for ensuring the safe work of components.

Metal fabrication is the creation of metal structures by cutting, bending, and assembling processes. It is a value-added process involving the creation of machines, parts, and structures from various raw materials.

Metal fabrication usually starts with drawings with precise dimensions and specifications. Fabrication shops are employed by contractors, OEMs and VARs. Typical projects include loose parts, structural frames for buildings and heavy equipment, and stairs and hand railings.