Analysis of Steel Standard System for Building Steel Structure

Standard of Steel Structure for Buildings

The standard of steel structure for buildings is an important factor to ensure the safety and reliability of building steel structures and their works. Generally, the standard of steel material should meet the relevant international standards of ASTM standards, JIS standard and DIN standard, etc. In addition, the fatigue strength of steel structure should also meet the relevant requirements.

ASTM standards ASTM A36 / A36M, ASTM A193 / A193M, ASTM A572 / A572M are generally used as the standard for hot-rolled steel structural parts in construction projects. The forging steel material is mostly from AISI, SAE and ASTM standard, under which ASTM A694 / A694M-02a are mainly used in the steel structure works.

JIS standard mainly includes JIS G3101-2004 “Rolled Steel for General Structures” and JIS G3106-2004 “Carbon Steel Plate for Structural Purpose.” Generally used as a standard for cold-formed and hot-rolled steel structures.

DIN standard also includes various standards, such as EN 10025, EN 10028 and EN 10113, which are mainly used in steel structure works.

In addition to the standard of steel material, the fatigue strength of steel structure must also meet the relevant requirements. According to the fatigue strength design theory, after repeated cycling loading of the structure, cracks will develop around the critical section and lead to brittle fracture. Therefore, it is necessary to calculate the fatigue strength of the steel structure to establish the safety specification.

In a word, the standard of steel structure for construction must meet the relevant international standards and should also take the fatigue strength of steel structure into consideration. That is important for ensuring the safety and reliability of building steel structure and its works.

The standard system for steel structures in buildings is composed of structural steel, welded steel structures and reinforced steel structures.

Structural steel is a widely used building material. Its performance characteristics include strength, durability and plasticity. Its steel products are widely used in residential buildings, bridges, high-rise buildings and other structures. Commonly used structural steel includes Q235, Q345 and Q550. Q235 is mainly used for residential buildings, Q345 is mainly used for bridges, and Q550 is mainly used for high-rise buildings.

Welded steel structure is composed of steel as the main building material, and uses bolts and rivets to connect the structural parts together. Its mechanical performance and structural performance are superior to those of other building materials, making it the most widely used building material. Its main materials are Q235 and Q345, which have high plasticity, high strength and strong durability.

Reinforced steel structure is mainly characterized by the use of steel bars and prestressed concrete as the main load-bearing components. It has strong compressive strength, shear resistance and good stability, and is often used in high-rise buildings, bridges and other structures. Mainly used prestressed concrete grades are C50 and C60.

The three main types of steel building structures have different characteristics, and the choice of materials should be based on the actual situation and requirements of the project.