As an important component of urban underground space, the steel structure design, production, and installation quality of pipe galleries directly affect their safety, durability, and service life. The following will provide a detailed analysis of the technical key points of pipe gallery steel structures from three aspects: design, production, and installation.

1、 Design phase

1. Structural selection and layout: Based on factors such as the functional use, geological conditions, and load requirements of the pipe gallery, select appropriate structural forms such as single-layer, multi-layer, circular, rectangular, etc., and arrange them reasonably in both plan and vertical directions to ensure overall stability and space utilization of the structure.
2. Load calculation and analysis: Accurately calculate the long-term load, variable load, accidental load, etc. that the pipe gallery structure can bear, and conduct load combination analysis to ensure the safety of the structure under various working conditions.
3. Component design and material selection: Based on the calculation results, design the cross-section of each component and select appropriate steel models and specifications to ensure that the components have sufficient strength, stiffness, and stability.
4. Node design: Nodes are critical parts of steel structures and require refined design to ensure clear force transmission, reasonable construction, ease of construction, and meet seismic and fire resistance requirements.
5. Anti corrosion and fire prevention design: In response to the corrosiveness and fire risks of underground environments, reasonable anti-corrosion and fire prevention measures should be developed, such as applying anti-corrosion coatings, setting fireproof coatings, etc., to extend the service life of the structure.
2、 Production stage

1. Raw material control: Strictly control the quality of raw materials such as steel and welding materials to ensure that they meet design requirements and relevant standards and specifications.
2. Cutting and processing: Advanced CNC cutting equipment and processing technology are used to ensure the dimensional accuracy and processing quality of components.
3. Welding process: Develop a reasonable welding process specification, strictly control welding parameters, ensure welding quality, and conduct necessary welding inspections, such as visual inspection, non-destructive testing, etc.
4. Anti corrosion treatment: Strictly follow the design requirements for anti-corrosion treatment of components to ensure coating thickness, adhesion, and durability.
5. Pre assembly and acceptance: Pre assembly of components is carried out before leaving the factory, checking the dimensional accuracy and connection quality of the components, and conducting acceptance to ensure that the component quality meets the design requirements.

3、 Installation phase

1. Foundation construction: Ensure the quality of foundation construction and provide reliable support for steel structure installation.
2. Component transportation and lifting: Develop a reasonable transportation and lifting plan to ensure that the components are not damaged during transportation and lifting.
3. Installation accuracy control: Advanced measuring instruments and installation processes are used to strictly control the installation accuracy of components, ensuring that the overall geometric dimensions and positions of the structure meet the design requirements.
4. Connection and fixation: Strictly follow the design requirements for component connection and fixation to ensure reliable connection and clear force transmission.
5. Acceptance and testing: After installation is completed, a comprehensive acceptance and testing shall be carried out, including appearance inspection, size measurement, weld seam testing, anti-corrosion and fireproof coating testing, etc., to ensure that the project quality meets the design requirements and relevant standards and specifications.

4、 Other technical points

1. Application of BIM technology: Using BIM technology for 3D modeling, collision detection, construction simulation, etc. of pipe gallery steel structures to improve design efficiency and construction quality.
2. Information management: Establish an information management system for pipe gallery steel structure engineering to achieve information management and quality control throughout the entire process of design, production, and installation.
3. Safe and civilized construction: Strengthen the safety management of the construction site, ensure the safety of construction personnel, and take effective measures to reduce the impact of construction on the surrounding environment.

V. Conclusion

Pipe gallery steel structure engineering is a complex system engineering that requires close coordination and strict control of various aspects such as design, fabrication, and installation. Only by mastering and applying the above technical points can the quality and safety of pipe gallery steel structure engineering be ensured, providing reliable guarantees for the development and utilization of urban underground space.

Here are some additional explanations:

The above technical points are for reference only, and specific projects should be adjusted and improved according to the actual situation.
When designing, manufacturing, and installing pipe gallery steel structures, relevant national standards, specifications, and technical regulations should be strictly followed.
It is recommended to choose a unit with rich experience and professional qualifications for the design, production, and installation of pipe gallery steel structure engineering.

I hope the above content can help you better understand the technical points of pipe gallery steel structures.