What Are the Differences Between Aluminum Formwork Tie Plate System and Tie Rod System?
What is a Tie Plate System?
The tie plate system is an aluminum formwork system reinforced using tie plates. It mainly consists of aluminum alloy formwork panels, connectors, single props, tie plates, walers, square tube locks, diagonal braces, steel cables, wind hooks, and other components.
What is a Tie Rod System?
The tie rod system is an aluminum formwork system reinforced using tie rods. It mainly consists of aluminum alloy formwork panels, connectors, single props, tie rods, walers, diagonal braces, and other components.
Key Differences in Usage:
The tie plate system mainly uses single-use tie plates, which are embedded into the wall after formwork removal.
The tie rod system mainly uses tie rods with intermediate plastic cups and sleeves; after formwork removal, the tie rods are extracted and can be reused.
Comparison of Construction Effects:
Tie Plate System: Wall surfaces are relatively smooth. The tie plates are embedded into the wall, and the exposed sections break off naturally, eliminating the need for secondary plastering.
Tie Rod System: Wall surfaces are relatively smooth. The sleeves are embedded in the wall, and after tie rod removal, holes remain in the wall that must be filled afterward, increasing labor and material costs.
Overall, the tie rod system has a more complex reinforcement process. The components are heavier, which increases the labor difficulty and slows construction progress. Post-removal, filling the tie rod holes is troublesome, costly, and can affect the wall’s waterproof performance.
In contrast, the tie plate system has a simpler reinforcement process. Components are lighter, saving significant installation time and labor. Each rib of the tie plate formwork has a tie plate slot, which ensures a smoother wall surface after formwork removal. The recessed portion of the tie plate remains embedded in the concrete wall, avoiding holes on the wall surface, reducing the cost of secondary filling, and providing better overall waterproof performance. This makes it especially suitable for waterproof walls and exterior walls. Therefore, the tie plate system has a significant advantage over the tie rod system.
Construction Parameter Comparison
| Parameter | Tie Plate System | Tie Rod System |
|---|---|---|
| Ease of Installation | Workers use lightweight square tube locks and square tubes, greatly reducing labor intensity and improving efficiency. | Heavy walers must be transported, increasing labor intensity and lowering efficiency. |
| Reinforcement Installation | Standard residential walls typically install 3 internal and 4 external square tubes (weight: 3–10 kg each). | Standard residential walls typically install 4 internal and 5 external walers (weight: 10–35 kg each). |
| Special Nodes (e.g., T-walls, long walls, wall piers) | Additional square tubes can be added at any time without modifying the formwork, convenient and fast. | Adding walers requires custom fabrication and template hole processing. |
| Long Wall Installation | Square tubes can be installed staggered to prevent formwork bulging. | Walers cannot be staggered and require long full-length pieces or overlapping installation, making reinforcement cumbersome. |