In the field of grid construction, the high-altitude bulk construction method has become an important way to deal with complex projects with its unique advantages. This article will delve into its specific steps and key points of attention.

Specific steps

Construction preparation: This is the cornerstone of project development. Construction personnel need to be fully familiar with the construction drawings of the grid structure and clarify the details of each component. At the same time, the construction site is carefully cleaned and leveled to ensure that the site is solid and stable. Strictly inspect the incoming grid members and node materials, verify the quality certification documents, and ensure that the materials match the design. Prepare complete construction tools and equipment, and ensure their good performance.

Basic treatment and layout: The foundation is the supporting foundation of the grid structure. First, conduct a comprehensive inspection of the size, position, elevation, and other aspects of the foundation to ensure compliance with the design requirements. Afterwards, based on the design drawings, precise alignment is carried out on the foundation to clarify the axis and support positions of the grid structure, laying a precise foundation for subsequent installation.

Assembly of members and nodes: This step is crucial for the formation of the grid structure. First, pre assemble some members and nodes on the ground, and check for dimensional accuracy and connection issues. Subsequently, the members and nodes are lifted to the high-altitude design position, and starting from the support nodes, the lower chord, web, upper chord, etc. are installed in sequence. During installation, real-time monitoring and adjustment are carried out using measuring instruments to ensure accurate positioning. When using welding or bolt connections, strictly control the process parameters and tightening torque to ensure a firm connection.

Grid adjustment and calibration: After the grid is assembled to a certain stage or completed, comprehensive measurements of overall dimensions, elevation, deflection, etc. are taken. Based on the measurement results, for the parts that exceed the deviation, the grid structure is corrected by adjusting the length of the members, node positions, and other methods to meet the design requirements.

Quality inspection and acceptance: This is the final checkpoint to ensure the quality of the project. First, conduct a visual inspection to check the condition of the connections and welds. Re check all dimensions to ensure compliance with the design. Use non-destructive testing methods to inspect the internal quality of the weld seam. At the same time, organize construction materials and organize relevant units for acceptance.

Attention points

Safety measures: High altitude operations pose a high risk, and comprehensive safety protection facilities must be installed, such as safety nets, safety belts, and operating platforms. Construction personnel must wear and use protective equipment correctly and strictly follow operating procedures.

Measurement accuracy: The accuracy of measurement determines the quality of grid installation. Regular calibration of measuring instruments, strengthened measurement control during construction, timely detection and correction of deviations.

Welding quality: Welding quality is related to the safety of the grid structure. Welding personnel need to possess qualifications and skills, and select qualified welding materials. Conduct process evaluation before welding, determine reasonable parameters, control deformation and stress, and prevent defects such as cracks.

Climate conditions: Adverse weather conditions affect construction safety and quality. Operation shall be stopped in strong wind, rainstorm, high temperature and other weather, and cold and freezing prevention measures shall be taken for winter construction.

Finished product protection: Pay attention to protecting the installed components during construction to avoid collision damage. Timely anti-corrosion measures should be taken at the welding site to prevent rusting.

Although the high-altitude bulk construction method is complex and challenging, as long as the steps and precautions are strictly followed, it can ensure the safe, accurate, and high-quality completion of the grid construction, laying a solid foundation for various construction projects.