Beijing warehouse leasing reminds the problems that should be considered in factory design.

The modern factory is a steel structure factory, because the steel structure industrial factory has been widely recognized in the construction engineering because of its fast construction speed, light weight, good seismic performance, environmental protection and other characteristics, and has gradually replaced the heavy reinforced concrete structure in the design of industrial factory. This paper discusses the corresponding problems in the design and construction of steel structure industrial plant.

Summary of advantages of steel structure industrial plant the main advantages of steel structure industrial plant are: first, construction speed: high-rise steel structure components can be manufactured in batches in factory, with simple construction and quick installation, which greatly shortens the construction period; Secondly, the self weight of the steel structure industrial plant can reduce the quality of the building structure by about 30%, especially in places with low foundation bearing capacity and high earthquake fortification intensity, and its comprehensive economy is better than that of the reinforced concrete structure system; Finally, from the perspective of environmental protection: the steel structure system belongs to an environmental friendly green building system. Steel itself is a high-strength, high-efficiency material with high recycling value and does not require mold construction.

Importance of drawing design of steel structure industrial plant: no matter what kind of project, the drawing is the foundation of engineering construction. During the design process of the steel structure industrial plant, the professional and technical personnel of the construction unit shall be organized to review the drawings, check the errors, leaks, collisions and defects in the construction drawings, try to solve the problems before construction, and reduce the impact of drawing problems on the project quality and progress. The construction organization design shall be prepared for the steel structure engineering design according to the production and installation stages. The production process of steel structure shall include the quality standards and technical requirements of the production stage, each process and each process, as well as the specific measures formulated to ensure the product quality.

Design principle of support system of steel structure industrial plant: in order to ensure the spatial work of steel structure plant, improve its overall stiffness, bear and transmit longitudinal horizontal force, prevent excessive deformation of bars, avoid instability of compression bars, and ensure the overall stability of the structure, reliable support system shall be arranged according to the form of plant structure, the setting of workshop cranes, vibration equipment and the span, height and length of temperature section of the plant. Each temperature section of the power house shall be provided with a stable inter column support system, which shall be coordinated with the layout of the transverse horizontal support of the roof. The position of the lower column support is an important factor that determines the deformation direction of the longitudinal structure of the plant and affects the magnitude of the temperature stress. The lower column support shall be located in the middle of the temperature section as far as possible, so that the crane beam and other longitudinal members can freely expand and contract to both ends of the section with the change of temperature. When the length of the temperature section is not long, the lower column support is generally set in the middle of the temperature section. However, when the length of the temperature section is more than 150m, in order to ensure the longitudinal rigidity of the plant, two lower column supports should be set in the temperature section, and their positions should be located at one third of the temperature section as far as possible to avoid excessive stress.

Key points of seismic design of steel structure industrial plant: in the seismic design of steel structure industrial plant, attention should be paid to: first, in the overall layout, the quality and stiffness of the plant structure are required to be evenly distributed, so that the plant is evenly stressed and the deformation is coordinated, and the adverse impact of uneven structural stiffness on seismic resistance is avoided as far as possible. The transverse structure of the plant should adopt rigid frames or frames with certain consolidation between the roof truss and the columns, so as to make full use of the mechanical performance of the steel structure, Reduce the deformation of the transverse structure; Secondly, the failure of steel structure workshop is generally not due to the insufficient strength of the members, but often due to the instability of the members. Therefore, it is particularly important for the steel structure workshop to reasonably arrange the support system to ensure the overall stability of the workshop structure; Finally, under earthquake action, there is low cycle fatigue, and attention should be paid to its impact on the plant during design. In the design of structural connection points, it should be ensured that the failure of joints does not precede the full section yield of structural members, so that structural members can enter plastic work and fully absorb earthquake capacity.

Analysis on the embedding of anchor bolts during construction: it can be said that the firmness of anchor bolts is the root of the stability of steel structure industrial plant buildings. The accuracy of anchor bolts is related to the positioning of steel structures. The embedding accuracy of anchor bolts must be strictly guaranteed. Embedding accuracy of anchor bolts: axis displacement: ± 2.0mm, elevation: ± 5.0mm. Before installing the column anchor bolts, project each axis of the horizontal control network onto the surface of the column foundation and close them all to ensure the installation accuracy of the bolts. Then set out the outer line of the column according to the axis. After the bearing platform frame for installing the steel column anchor bolts is installed, copy the required elevation onto the steel pipe frame.