Development of Lifting and Demolition Method Using Diagonal Slab Cutting Method
By T. Nakamura and T. Ishida
Concrete Journal, Vol.63, No.8, Aug. 2025
- Synopsis
- To improve the productivity of above-ground demolition work for high-rise buildings, we experimentally examined the specifications of a diagonal-cutting concrete cutter with the goal of establishing a demolition method that enables diagonal slab cutting. We studied the orientation of the cutting blade, the blade mounting position, and the wheel position, and identified the specifications that effectively improve cutting efficiency. Additionally, we developed a device that separates the slurry water generated during cutting into recycled water and dewatered cake, along with lifting equipment and jigs to streamline the hoisting work in the lifting-type demolition method. Furthermore, by applying these devices to the demolition of a high-rise building, we confirmed the effectiveness of the lifting and demolition method using diagonal slab cutting and verified its productivity benefits compared to conventional block demolition methods.
- Keywords:
- Demolition, High-rise building, Productivity improvement, Cutting, Diagonal cutting, Safety
