2025-02-14    261

1. Increasing Cross-sectional Reinforcement of Members

• Connection of Reinforcement Bars: Reinforcement bars can be connected via welding or riveting. Reinforcement design must comply with structural requirements.
• Crack Repair and Reinforcement: Surface cracks in rigid structures require immediate repair and reinforcement. Prior to repair, the root cause of cracking (e.g., material defects, cyclic loading, or improper construction) must be identified. Post-repair reinforcement ensures structural integrity.

2. Section Strengthening Method

• Local or Full-length Reinforcement: Reinforce members partially or entirely with steel bars, integrating them into a unified load-bearing system.
• Structural System Optimization:
• Add supplementary supports to redistribute loads and reduce internal forces.
• Introduce forced displacement adjustments for statically indeterminate structures to mitigate stress concentrations.
• Apply pre-stressed cables to enhance load capacity, stiffness, and stability at critical weak points.

3. Connection Technologies

• Joint Types: Use welded joints or friction-type high-strength bolts. Hybrid connections (welding + bolts) are permissible in existing structural bases.
• Quality Control:
• Welding procedures and materials must meet certified standards.
• Address crack damage caused by cyclic loading, material flaws, or construction errors through systematic correction protocols.