In concrete pouring engineering, efficiency and precision directly affect the construction quality and progress. The traditional artificial placer is not only labor intensive, but also prone to the problem of uneven distribution of concrete. The emergence of concrete boom placer, with its flexibility and automation advantages, has become the “stat equipment” in various construction scenes. This article will take take you through the key application of concrete placer boom in different projects.
What Is Concrete Boom Placer
Concrete placer rod is a device that delivers concrete precisely to the pouring position through a mechanical arm or pump pipe system. It is mainly divided into two categories: Arm-type rod and manual placer rod. The former relies on hydraulic drive to achieve multi-angle rotation, and the latter manually adjusts the direction of the pipeline. Its core values are to maximize the range of pouring, reduce labor dependence, and ensure that the concrete is evenly spread.
Core Application Scenarios Of Boom Placer
High-rise Buildings – “stabilizers” Poured At High Altitude
- Challenge
Super high-rise buildings need to pump concrete vertically more than 100m, and the traditional way is easy to block pipes and segregation problems.
- Placer Rod Solution
The boom type of placer bar is mounted on the climbing mold or tower crane, which can rotate 360° to cover the floor plane. For example, in the construction of Shanghai Tower, the boom placer rod and the hydraulic climbing system cooperate, and the single pouring height is 6m, the efficiency is increased by 40%, and the risk of working at height is reduced.
Large Bridge – “Accurate Brushes” For Complex Structures
- Challenge
Piers, box beams and other parts of the reinforcement is dense, pouring needs to avoid obstacles and ensure the density.
- Placer Rod Solution
The folding boom placing rod is used to pour in layers deep into the narrow space. In the construction of Hong Kong- Zhuhai – Macao Bridge, the material discharge speed is controlled by the placing rod through the preset program and combined with the vibrating equipment, the bubble rate of concrete pier is reduced to less than 0.8%.
Water Conservancy And Hydropower Engineering – The King of Endurance of Large-scale Pouring
DAMS, levees and other projects need to continuously pour tens of thousands of square concrete, heat dissipation and crack prevention is the key.
- Placing Rod Solution
Multiple placing rods form a joint operation system to coordinate with the cooling water pipe embedment. In the construction of the Three Gorges Dam, the placing rod uses the “thin layer continuous pouring” process to increase the daily pouring volume to 12,000 cubic meter, whike reducing temperature cracks through intelligent temperature control.
Underground Integrated Pipe Galley — “Flexible Master” in small space
- Challenge
The inner space of the pipe gallery is narrow, and it is difficult to expand the traditional pump truck.
- Placer Rod Solution
The miniature placing rod equipped with the shield machine can be used to pour the lining concrete simultaneously with the driving. In the Chengdu underground pipeline corridor project, the technology can increase the single-day advance speed by 30%, and the pouring thickness error is controlled within±5mm.
Industrial Plants — Efficiency Experts For Large-scale Pouring
- Challenge
The ground of a large factory requires a molding, and the flatness error should be less than 3mm.
- Placing Rod Solution
Automate the pouring, paving and leveling process with a rod with a laser leveling system. In the floor construction of an automobile factory, the construction period of 20,000 square meters of floor was shortened from 15 days to 7 days.
Technological Innovation – Intelligent Enabling Future Construction
Modern fabric rods are developing in the direction of intelligence:
- 5G Remote Control
Operators can adjust parameters in real time in the control room to reduce the risk of working at altitude.
- BIM Integration
Predict the fabric path through the building model to avoid collision with the steel bar.
- Pressure Sensing System
Automatically adjust the pumping pressure, and the plugging rate is reduced by more than 60%.
Selection Considerations Of Placing Rod
- Construction Environment
The folding arm model is preferred in narrow space, and the horizontal coverage radius should be paid attention to in large-span projects.
- Concrete Performance
High grade concrete needs to match higher conveying pressure (recommended ≥12MPa).
- Cost-effectiveness
Short-term projects can be leased manual, long-term projects are recommended to purchase smart arm rack type.
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Conclusion
From skyscrapers to underground tunnels, concrete placers are reshaping modern construction with “efficiency, precision and safety.” With the popularization of intelligent construction technology, this equipment will become the core tool for improving engineering quality and efficiency. In the future, we may see the deep integration of placing rods with robots and AI algorithms, further promoting the transformation of the construction industry to industrialization.