Ground improvement measures are possible with the ground replacement method "Columbus+" / Case study of welfare facilities.
Ground Replacement Method Columbus+
Powerful against weak ground! Strong against earthquakes, differential settlement, and traffic vibrations, and also excellent for underfloor insulation.
【Small-scale multifunctional home care facility】―――――――――――――――――― Nagato City, Yamaguchi Prefecture・Construction completed in February 2012・Wooden single-story building・467 square meters / Cost reduction compared to pile foundations. ――――――――――――――――――――――――――――――――― The ground replacement method "Columbus+" provides dual benefits of countermeasures against differential settlement and seismic resistance, making it a method that is strong against earthquakes and liquefaction. It is recommended for ultra-soft ground, pile foundations, friction pile foundations, designated archaeological areas, underground buried obstacles, leased land, vibration countermeasures, and earthquake countermeasures. By removing the heavy soil beneath the foundation and placing lightweight EPS (expanded polystyrene) "Geoform" in its place, the weight of the building on the soft ground is reduced, thereby suppressing settlement. Furthermore, it balances with the ground to prevent differential settlement, where the building tilts and sinks, ensuring safety even on ultra-soft ground with deep support layers. For more details, please contact us or download the catalog.
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basic information
【Features】 ○ The cushioning material "Geofoam" weakens the "vibrations from traffic and machinery" and "reflects and absorbs earthquake tremors," thereby reducing the impact transmitted to the foundation concrete, resulting in a halving of the vibrations experienced by the building. ○ The weaker the ground, the longer and larger the earthquake tremors become. ○ In the case of the ground replacement method [Columbus+], as a result of measures against weak ground, a double effect of differential settlement countermeasures and seismic isolation is achieved. ○ The insulation properties of the "Geofoam" installed under the entire foundation reduce heat loss to the underfloor, contributing to CO2 reduction through heat storage heating systems that store heat in the foundation concrete. 【What is Geofoam?】 ○ It is expanded polystyrene (EPS) produced by the molding method using polystyrene beads. ○ EPS was first used in ground applications in 1972 with the development of the "EPS Civil Engineering Method" in Norway. ○ In Japan, it was introduced in 1986, and it has been confirmed to be durable without issues such as corrosion from microorganisms in the soil or damage from termites. ● For more details, please contact us or download the catalog.
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Applications/Examples of results
【Applications】 ○ Different subsidence measures ○ Ground vibration reduction (earthquakes) ○ Traffic and factory vibration measures ○ Liquefaction measures ○ Energy-saving foundation insulation (frost heave prevention effect) ○ Archaeological site measures, etc. 【Achievements】 ○ Commercial facilities ○ Nursery schools and kindergartens ○ Public institutions ○ Medical and welfare facilities ○ Factories and offices ○ Multi-family housing, etc. For more details, please contact us.
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Company information
Our company specializes in the "Ground Replacement Method Columbus+" which is resistant to earthquakes, differential settlement, traffic vibrations, and liquefaction. We have offices and agents across the country, and our representatives will visit you to provide explanations. Estimates are also free, so please feel free to contact us.