References(9) Cited-By(1) The 4th runway of Tokyo Haneda International Airport is now under planning. The distributions of weak layer, bearing layer and their engineering characteristics must be clarified to some extent. Prior to detailed foundation investigations leading to for detailed designs and constructions. New soil investigations of boring, sampling and laboratory tests were conducted in this area. Using these data and the past boring data from the database, the whole 3D ground was visualized by the 3D soil layer estimation system, that we have proposed. Subsequently, the 3D ground for the runway could be successfully modeled. This 3D model is very useful to recognize the general soil layer compositions for planning the detailed soil investigations on their test items, depths and numbers. Furthermore, this result is expected to reduce the costs regarding numerical analysis, design and construction.
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