Half Round Trusses For Disassembly And Assembly

Aluminum alloy curved roof trusses have significant advantages in disassembly and assembly scenarios due to their material properties and structural design, which are specifically reflected in the following four aspects:

1. Lightweight and convenient transportation

The density of aluminum alloy is only 2.7g/cm³, which is about 1/3 of that of steel trusses. The weight of a 18-meter span truss is ≤800kg, and it can be loaded and unloaded by a forklift or a small crane. The dome truss of a certain exhibition center uses 6061-T6 aluminum alloy. After disassembly, the maximum weight of a single component is 120kg, and 4 workers can carry it by hand, which is 3 times more efficient than steel trusses.

Modular split design. The truss can be split into chords, webs and connectors along the nodes. The standard component size is ≤3m×1.2m. The container loading capacity is 50% more than that of the integral steel truss, and the transportation cost of a temporary commercial dome is reduced by 40%.

2. Fast assembly and tool simplification

The node structure is mainly bolted. The Aluminum circle truss chord is connected with high-strength aluminum alloy bolts (such as A4-80) and with positioning pin holes, the installation time of a single node is ≤15 minutes. The 20 trusses of a temporary exhibition hall were assembled in only 8 hours, which shortened the construction period by 70% compared with welded steel trusses.

Advantages of welding-free process. Aluminum alloy trusses can be disassembled and assembled without hot work, and construction can be carried out at night in sensitive places such as shopping malls and museums. A shopping mall renovation project uses detachable trusses. It operates normally during the day and completes the top structure replacement in 6 hours at night.

3. Reuse and structural durability

Powerful Solutions For Half Round Truss

The material is highly recyclable. The recycling rate of aluminum alloy trusses after dismantling is 95%. The dome trusses of a certain exhibition were reused 3 times, and the material cost per time was only 1/5 of that of steel trusses. And the mechanical properties decay after multiple disassembly and assembly is less than 5% (15%-20% for steel trusses).

 

Surface treatment is wear-resistant. Anodized or sprayed coatings have better scratch resistance than steel during disassembly and assembly. After five disassembly and assembly, the intact rate of the oxide film of a stadium truss was still 90%, while the coating damage rate of the galvanized steel truss exceeded 30%.

4. Temporary and permanent scene adaptation

Temporary buildings can be quickly erected. Aluminum alloy trusses are used for temporary domes at music festivals, exhibitions, etc. A 5,000 square meter roof can be erected within 48 hours, and the site can be cleared within 3 days after dismantling. A large exhibition adopted this solution, and the site turnover efficiency increased by 2 times.

Flexibility in permanent building renovation. When the function of a commercial space changes, the truss can be partially split to adjust the span. For example, a shopping mall was converted from an atrium to an exhibition hall. By removing some truss webs and adding supports, the structural renovation was completed within 2 weeks, saving 60% of the construction time compared to building a new steel structure.

Typical case: The temporary dome of a coastal resort uses aluminum alloy curved trusses, with a single construction cycle of 5 days, quarterly disassembly and assembly for 3 years, material loss rate <3%, and the transportation volume is only 1/4 of the steel truss, reducing the overall cost by 55%. This advantage makes it a preferred solution in the fields of exhibitions, cultural tourism, emergency engineering, etc.

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