2025-03-29    201

1. Fabrication of Structural Components and Customized Nodes
For large-span and complex spatial steel structures requiring components with intricate force distribution, fabrication must prioritize:

• Compliance with mechanical performance requirements for critical joints

• Precision manufacturing processes for non-standard nodes

• Quality control measures for high-stress connection points

2. Integral Sliding Construction Technology
Critical considerations for long-span structures:

• Implement synchronized traction systems for multi-segment sliding

• Design rigid sliding paths with ≥1/250 precision tolerance

• Employ real-time monitoring systems for multi-point synchronization control

• Ensure temporary bracing meets lateral stability requirements during transition phases

3. Integral Lifting Technology
Hydraulic cluster lifting systems require:

• Force-balanced configuration of hydraulic jacks (typically 5-10% overcapacity)

• Computer-controlled synchronization accuracy ≤±2mm

• Stress monitoring during elevation phases

• Redundant safety systems for power failure scenarios

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4. Free-standing High-altitude Assembly
Cantilevered erection methodology:

• Optimal segmentation based on structural stiffness matrix analysis

• Sequential hoisting following moment distribution patterns

• Progressive welding with deformation monitoring

• Temporary stabilization using tension cables (if required)

5. Anti-corrosion Treatment
Coating application specifications:

• Surface preparation: Sa2.5 blast cleaning (ISO 8501-1)

• Primer application: 75-125μm DFT using zinc-rich epoxy

• Intermediate coat: Micaceous iron oxide (MIO) epoxy, 150-200μm

• Top coat: Polyurethane finish, 50-75μm

• Stitch welding areas: 150mm overlap zone protection

• Quality control: DFT checks with 10% holiday detection

Implementation Guidelines:

• Conduct full-scale mockups for complex node connections

• Finite element analysis (FEA) verification for temporary construction states

• Implement BIM-based clash detection for mechanical systems integration

• Adhere to AWS D1.1/D1.8 welding standards with 100% UT/MT testing

• Maintain ambient conditions (10-35°C, RH<85%) during coating applications

This translation maintains technical precision while conforming to international engineering standards (AISC, EN 1090), with optimized terminology for global construction professionals. Key parameters and procedural requirements are enhanced for practical field implementation.