Construction of one layer steel structure industrial workshop

Modern steel structure industrial workshops have been widely recognized in construction projects for their fast construction speed, light weight, good seismic performance, and environmental protection. Steel structures have gradually replaced the bulky reinforced concrete structures in the design of industrial factory and have been widely used.

Steel structural components can be mass-produced in factories, with simple construction and quick installation, which greatly shortens the construction period. The steel structure industrial workshop can reduce the structural mass of the building by about 30% in terms of self-weight, especially in places with low bearing capacity of the foundation and high frequency of earthquakes, its comprehensive economy is better than that of the reinforced concrete structure system.

In terms of environmental protection, the steel structure system belongs to the environmentally friendly green building system. The steel itself is a high-strength and high-efficiency material with high recycling value, and does not require molding construction. Therefore, there are more and more steel structure industrial workshop.

Design principles of steel structure industrial workshop

In order to ensure the space work of the steel structure workshop, improve its overall rigidity, bear and transmit longitudinal horizontal force, prevent excessive deformation of components, avoid compression rod instability, and ensure the overall stability of the structure. A reliable support system should be arranged according to the form of the workshop structure, the setting of the workshop crane, the vibration equipment, the span, height and length of the temperature section of the workshop.

A stable inter-column support system shall be set up in each temperature section of the factory building, which shall be coordinated with the arrangement of lateral horizontal supports of the roof. The position of the lower column support is an important factor in determining the deformation direction of the longitudinal structure of the factory building and affects the magnitude of the temperature stress. The lower column support should be located in the middle of the temperature section as much as possible, so that the longitudinal members such as the crane beam can be relatively free with temperature changes. Both ends of the ground segment are narrowed. When the length of the temperature section is not large, a lower column support is generally arranged in the middle of the temperature section. However, when the length of the temperature section is greater than 150 meters, in order to ensure the longitudinal rigidity of the factory building, two lower column supports should be set up in the temperature section, and their positions should be arranged within the middle third of the temperature section as much as possible. In order to avoid excessive temperature stress, the distance between the centers of the two supports should not be greater than 72 meters.

In addition, the design of steel structure industrial factory drawings is also very important. No matter what kind of project, the drawings are the basis for engineering construction. During the design of the steel structure industrial plant, the professional and technical personnel of the construction unit should be organized to conduct a joint review of the drawings, check the "wrongs, omissions, touches and omissions" in the construction drawings, and strive to solve the problems before construction, and reduce the problems caused by the drawings, quality and progress.

For the steel structure project, the construction organization design should be prepared separately for the production stage and the installation stage, and the production process content should include the quality standards and technical requirements of each sub-item in the production stage, as well as various specific measures to ensure product quality.

The eccentric support system of steel structure is a kind of structural system between pure steel frame system and central support steel frame system. On the one hand, there is no column support in the design of the pure steel frame system, which is conducive to the flexible layout of the plane, and the structure has good ductility and energy dissipation capacity. However, the pure frame structure is relatively flexible and has poor elastic stiffness. In the elastic stage, the beam and column sections are often uneconomical in order to control the horizontal lateral displacement.

On the other hand, the central support frame system has high stiffness in the elastic stage, but its ductility and energy dissipation capacity are small, and its effect is large under strong earthquake conditions. For the eccentrically braced frame system, it has the characteristics of pure frame and centrally braced frame system because of the set of energy-dissipating beam segments. In the elastic stage, the stiffness is large, the horizontal lateral displacement is small, and it has good ductility and energy dissipation capacity, which can effectively reduce the seismic action of the whole structure, which is beneficial to achieve a safe and economical structural design.