The Gyropress Method™—a method for rotary cutting press-in of tubular piles—of GIKEN LTD. (Head Office: Kochi-shi, Kochi; President and CEO: Atsushi Ohira) has been adopted for a research facility construction project in Singapore, with local company Guan Chuan Engineering Construction Pte Ltd (hereinafter “Guan Chuan”) completing the work. Guan Chuan is a member company of GTOSS™ ASIA*, and on this occasion, group company GIKEN SEKO CO., LTD. (Head Office: Kochi-shi, Kochi; President and CEO: Akihiro Nishigawa) provided consulting support, achieving highly efficient and highly accurate press-in construction. This marks the first adoption of the Gyropress Method™ in Singapore.
With its narrow land area, Singapore has many densely populated areas with concentrated facilities, leading to an increase in construction work taking place under severe constraints. In recent years, demand for the Gyropress Method™ has grown due to an increase in construction projects on hard ground, with multiple other projects in the pipeline. Building on this successful project, which fully demonstrated the advantages of vibration-free and noise-free construction, space-saving operation, fast construction speed, and ability to overcome ground conditions, the Company will intensify technical proposal activities in collaboration with local GTOSS™ member companies to form more projects and enhance its presence in the Asian region.
* Comprehensive support service for press-in machine users provided by the Company. Please also see past news releases. (https://www.giken.com/en/news-cat/release/01_nov_2024/)
■Construction Details
Using the GYRO PILER™ GRV1230, 43 tubular piles measuring 12 m in length and 1,200 mm in diameter were pressed in. An earth retaining wall* extending approximately 54 m was constructed.
* A wall installed to prevent surrounding soil from collapsing when excavating ground.
■Gyropress Method™
This method constructs a robust and resilient Implant™ Structure via rotary press-in of tubular piles fitted with ripping bits called “ring bits” at their tips, penetrating existing structures and hard ground. As the method can penetrate existing structures, there is no need to remove buried objects, and pre-excavation using excavators is unnecessary, thus reducing construction time and costs. Furthermore, as the lightweight and compact GYRO PILER™ firmly grips already installed piles, there is no risk of falling over in principle, and construction can be carried out whilst suppressing vibration and noise, eliminating concerns about adverse effects on the surrounding environment.
■Reason for Adoption
The other construction methods that were originally designed required construction using large vibratory pile drivers on hard ground, and the vibration and noise during construction, which would adversely affect nearby facilities, posed a challenge. The Gyropress Method™ enables vibration-free, noise-free, and space-saving construction even on hard ground. The method received favourable evaluations for minimising adverse effects on the surrounding environment, including enabling construction in approximately two hours per pile, a short period of time. Additionally, whilst concerns were raised about the narrow spacing between piles and the difficulty of the trajectory, by introducing the Company’s Pile Installation Quality, “Implant NAVI™”*, pile behaviour was monitored in real time, achieving accurate press-in construction as planned.
* Reference: Company website: (https://www.giken.com/en/products/ict/implantnavi/)
■Construction Overview
| Location | Science Park, Singapore |
|---|---|
| Project Owner | Non-profit organisation (name withheld due to research confidentiality) |
| Prime contractor | Shimizu – Dai-Dan Joint Venture |
| Sub-contractor | Guan Chuan Engineering Construction Pte Ltd |
| Equipment | GYRO PILER™ GRV1230 |
| Specification of Pile Elements | 43 tubular piles (1,200 mm diameter, 12 m length) |
| Press-in Construction Period | 15 January to 6 February 2025 |
■Profile of GIKEN Group
GIKEN developed the SILENT PILER™, the world’s first reaction-based, non-vibratory hydraulic pile driving machine that operates with minimal noise impacts. The GIKEN Group now actively promotes its press-in technology worldwide and contributes to the construction industry by proposing and implementing innovative solutions. The innovative press-in technology provides a unique solution and the adoption of this technology has spread to over 40 nations and regions.
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