ジオテック List of Products and Services

"Ganko Oyaji" is a reinforcement system that improves the shear strength, ductility, and seismic resistance of concrete slab foundations by applying carbon fiber sheets with a matrix resin. Since it involves the application of high-strength carbon fiber, it results in a strong, cost-effective, and aesthetically pleasing finish, making it suitable for existing homes. Reinforcement is done by applying carbon fiber with matrix resin to unreinforced foundations. Additionally, for cracked foundations, epoxy resin is injected under low pressure before applying the carbon fiber. 【Features】 - High strength (the cracked unreinforced foundation becomes significantly stronger than when it was new) - High durability (particularly resistant to salt damage and corrosion) - Increased shear strength, ductility, and seismic resistance - Significantly reduced construction time, making it cost-effective (construction period of 3 to 5 days) - Minimal noise as heavy machinery is not used *For more details, please refer to the PDF materials or feel free to contact us.

The ETP method is a type of rotary penetration steel pipe pile with a tip wing, which is driven into the ground by rotating a steel pipe that has a triangular excavation auxiliary blade with a circular enlarged base welded to its tip.

High quality It is a reliable quality backed by numerous experimental results. Performance confirmation tests conducted on sandy soil, clayey soil, and loam have confirmed that the coefficient of variation is below 25%. Since the variability setting values have been obtained through performance confirmation tests, quality inspection is primarily conducted using "Inspection Method A." We will carry out highly reliable construction based on the technical guidelines of this method.

The Pure Pile Method (PP Method) uses a drilling rod equipped with a conical-shaped excavation head to excavate while pushing the ground laterally, constructing a pile-like column by replacing it with cement milk up to the support depth.

High-performance steel pipes are equipped with tip wings that are 3.0 times and 3.5 times the diameter of the steel pipe at the tip, suitable for clayey and sandy ground with equivalent N values of 5 to 15. Design using the equivalent N values from the SWS test (screw weight penetration test) is possible.

Compatible with all types of ground The Σ-i method is a highly versatile ground reinforcement technique that is compatible with all types of ground, including sandy, gravelly, and clayey soils. Design using the converted N values from SWS tests (screw weight penetration tests) and ram sounding tests is possible.

The Tiger Pile method combines the stable material strength of steel pipe pile methods with the large frictional force of soil cement column methods, compensating for the variability in column strength that is a disadvantage of the soil column cement method with the steel pipe, while the soil cement column method compensates for the small frictional force that is a disadvantage of the steel pipe pile method, effectively canceling out the shortcomings of both methods and demonstrating high bearing capacity.

The RES-P method is a type of piled raft foundation method. It involves driving pipes (thin steel tubes) into weak ground, strengthening the ground through the combined effect of the ground and the pipes to prevent settlement, and is a foundation reinforcement method for residential buildings.

Leading Edge Wing Easy to penetrate with a simple shape. Design possible with simple testing Design possible with SWS testing and ram sounding testing. Low noise, low vibration, and no spoil, environmentally friendly Extremely low vibration and noise, considerate of the surrounding environment, with no generation of residual soil, making it an environmentally friendly clean construction method.

When planning a basement for structures that exceed the design ground bearing capacity of 30 kN/m² → When it is necessary to embed the foundation to the angle of repose (30° line) For structures that are difficult to approve with ground improvement and would be over-spec with PC piles → Steel-framed buildings of 3 to 4 stories / retaining walls with a design ground bearing capacity of less than 100 kN/m², etc.

A support pile method using general structural carbon steel pipes STK-400 to support small-scale houses when the column improvement method cannot be applied, and when the building's load is supported only by the tip of the pile. This method is applicable when soft layers continue to a depth of GL-8.0m or more. In the case of steel pipe pile methods, there is a relationship between the building and the surrounding ground, and if adopted in areas where extreme ground subsidence occurs, it may lead to the phenomenon of the building lifting up (such as when embankment is done on extremely soft ground or ground with thick deposits of humus). The supporting ground for determining the length of the steel pipe pile is defined as having an N value of ≧15. The thickness of the supporting ground layer should, in principle, be continuous for more than 2.0m.

A method that involves spreading cement-based solidifying materials on soft ground, mixing, stirring, and compacting them with the original soil to create a slab-like solidified body. This method is applicable when the soft layer is distributed at a depth of GL-2.0m or shallower. However, it is not applicable if there is a water level within the improvement depth that makes mixing and stirring difficult, or if the improvement area extends to neighboring properties or roads, raising concerns about impacts on boundary blocks, neighboring houses, roads, etc. Good ground for determining the improvement depth is generally defined as a continuous layer of cohesive soil with an N value greater than 3 for cohesive soil and greater than 4 for granular soil.

A method of injecting and mixing cement milk (a mixture of cement-based solidifying material and water) into soft ground to create columnar improved piles underground. This method is applicable when the soft layer extends from GL-2.0m to approximately GL-8.0m. However, it is not applicable in cases where most of the soft layer consists of humus soil, where industrial or household waste is accumulated, where there is groundwater, or where buildings are constructed immediately after earthworks on former marshland. Good ground for determining the improvement depth is defined as a continuous layer of cohesive soil with an N value greater than 3, or granular soil with an N value greater than 4.

Geo-column method Surface improvement method Small diameter steel pipe pile method ETP method SMD steel pipe pile method ETP-G method RES-P method Tiger pile Σ-i method DM method Pure pile method Cross-wing column method

The "i-LIFT method" is a technique that injects grout into the ground to lift and restore tilted or sunken buildings while also enhancing the ground's bearing capacity. Since the injection is performed while continuously measuring with a high-precision leveling instrument, fine adjustments to the level are possible. Additionally, construction can be carried out with compact machinery, making it feasible even in areas with limited space between adjacent houses. This method allows for a reduction in construction time compared to conventional methods. 【Features】 ■ Fine adjustments to the level are possible ■ Construction is possible in areas with limited space between adjacent houses ■ Reduction in construction time ■ Can be implemented even if ground improvement has already been performed ■ Can be applied to measures against ground subsidence *For more details, please refer to the PDF materials or feel free to contact us.*