Why is high-strength alloy steel formwork becoming a core choice for modern high-rise buildings?
Publish Time: 2025-08-27
With accelerating urbanization and increasingly scarce land resources, modern high-rise and super-high-rise buildings are springing up like mushrooms after a rain. Against this backdrop, construction has placed unprecedented demands on formwork systems: not only must they possess exceptional load-bearing capacity and structural stability, but they must also meet multiple goals, including efficient construction, reuse, and environmental protection. Among various formwork materials, high-strength alloy steel formwork, with its excellent overall performance, is rapidly replacing traditional wood, ordinary steel, and plastic formwork, becoming a core choice for modern high-rise building construction.
High-rise buildings withstand enormous concrete lateral pressure and construction loads during construction. This is particularly true in core tubes, shear walls, and long-span beam-slab structures, placing extremely high demands on formwork strength, rigidity, and stability. High-strength alloy steel formwork is made from low-alloy, high-strength structural steel (such as Q345 and Q390) through heat treatment and precision machining. Its yield strength reaches over 345 MPa, significantly exceeding that of ordinary carbon steel and wood formwork. This high strength prevents deformation and bulging during large-volume concrete pours, effectively ensuring the geometric accuracy and flatness of key components such as walls and columns, significantly improving the overall structural safety and durability of the building.
2. High Reusability, Lowering Overall Costs
Traditional wood formwork is typically only reused 5-8 times and is susceptible to moisture, deformation, and cracking. This leads to high maintenance costs and difficulty in disposal after disposal, resulting in a waste of resources. High-strength alloy steel formwork, on the other hand, offers exceptional durability and fatigue resistance. After undergoing anti-corrosion treatment, it can be reused over 200 times in harsh construction environments. While its initial purchase cost is higher than that of wood or plastic formwork, the unit cost is significantly lower when amortized over each use. Especially in super-high-rise buildings, with their high number of standard floors and long construction periods, high-strength alloy steel formwork offers significant long-term economic advantages, making it a crucial tool for reducing project costs and increasing efficiency.
3. High Construction Efficiency, Accelerating Construction Schedules
Modern high-rise building projects are generally under tight deadlines. High-strength alloy steel formwork features a modular design and a high degree of standardization, enabling rapid assembly and disassembly. While slightly heavier than lightweight formwork, with optimal lifting equipment and construction organization, its overall turnover rate far exceeds that of traditional formwork. Furthermore, the steel formwork's high surface finish ensures excellent concrete appearance after demolding, reducing subsequent steps such as plastering and repairs, further shortening the construction cycle. In the context of fast-turnaround, high-density construction, high-strength alloy steel formwork has become a key tool for achieving "lean construction."
4. Green and environmentally friendly, in line with sustainable development trends
Under the backdrop of the "dual carbon" goals, the construction industry is increasingly demanding green construction practices. High-strength alloy steel formwork is 100% recyclable and reusable, generating no construction waste at the end of its lifecycle. This avoids the depletion of forest resources caused by wood consumption and the white pollution associated with plastic formwork. Its reusability also significantly reduces material and transportation energy consumption, aligning with the development of green buildings and a circular economy. As more and more large-scale projects use environmentally friendly formwork systems as a key evaluation criterion for excellence and awards, high-strength alloy steel formwork is gaining both policy and market support.
5. Adapting to the Needs of Smart Construction and Industrialization
With the promotion of BIM technology, prefabricated buildings, and smart construction, construction is moving towards standardization, industrialization, and informatization. High-strength alloy steel formwork easily integrates with BIM models, enabling precise design and prefabrication. Its standardized modules also facilitate collaboration with intelligent equipment such as climbing formwork systems and automatic concrete placing machines, enhancing construction automation. In prefabricated buildings, steel formwork can also be used for factory-based production of prefabricated components, ensuring component precision and consistency.
In summary, high-strength alloy steel formwork has become a core choice for modern high-rise buildings due to its comprehensive advantages in structural safety, economy, construction efficiency, environmental performance, and intelligent adaptability. It is not only an upgrade in formwork materials but also a significant manifestation of advancements in construction technology.
