Ground reinforcement work | Gravel soil strategy! Achieving reliable bearing capacity with the advanced Σ-i method.

Smoothly conquer hard layers and gravelly ground! The Σ-i method, equipped with four excavation blades and integrally molded wings, provides reliable anchoring and powerful support to deep supporting layers.

To maintain the stability of architectural structures, it is essential to accurately diagnose the bearing capacity of the local ground and implement ground reinforcement work according to the risk of settlement. When differential settlement occurs, excessive stress concentrates on the structure, leading to damage issues such as structural cracks and distortion of openings. The "Σ-i Method" proposed by Geotech is a small-diameter steel pipe pile method equipped with four excavation blades and an integrally formed spiral wing at the tip of the steel pipe. Its unique four-blade structure exhibits powerful drilling capability, allowing it to penetrate hard gravelly ground and compacted sandy layers that are difficult to construct with conventional rotary penetration techniques, achieving high penetration thrust to reach the target bearing layer. By using a rotary pressure insertion method that does not utilize cement-based solidifying materials, it achieves a completely zero-dirt construction with no construction waste generated. It has obtained the GBR-C performance certification from the Japan Building Comprehensive Testing Institute (No. 10-13 Rev. 2), enabling the calculation of highly accurate allowable bearing capacity from SWS tests and dynamic cone penetration tests. Certified construction management engineers monitor construction data with the latest measuring equipment, ensuring the establishment of high-quality foundation slabs.

Ground improvementPile and foundation workGround foundation construction method