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Analytical Geomechanics Group

Analytical Geomechanics Group Research contents

Evaluation for mechanism of ground disaster subjected to freeze- thaw actionEvaluation for mechanism of ground disaster subjected to freeze- thaw action
The mechanism for ground disasters due to freezing and frost heaving in winter-spring season has been studied by numerical analysis and laboratory tests.

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Evaluation upgrading for long-term characteristics of roadbed structure in cold region Evaluation upgrading for long-term characteristics of roadbed structure in cold region
Long-term characteristics of roadbed structure for cold regions subjected to freeze thaw actions has been studied.

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Evaluation for air permeability of ground on a gas residence layer in cold region and its testing method Evaluation for air permeability of ground on a gas residence layer in cold region and its testing method
The study for risk analysis for damage of gas pipeline in cold regions has been performed. The testing method for evaluation for air permeability of unsaturated-frozen ground has also been developed.

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The relationship between mechanical properties and compaction condition for crushable volcanic soilsThe relationship between mechanical properties and compaction condition for crushable volcanic soils
Various laboratory tests such as triaxial compression test (monotnic/cyclic), shear modulus measuring, permeability test have been performed in order to investigate the mechanical properties of compacted volcanic soils.

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Seismic performance of a bridge column integrated by multiple steel pipes with directly-connected piles Seismic performance of a bridge column integrated by multiple steel pipes with directly-connected piles
A bridge column integrated by multiple steel pipes and connected directly to piles with or without a footing is proposed to design a rational foundation of the column. Its seismic performance is evaluated based on the large-scale shaking tests and a soil-water coupled FE analysis.

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Study on long-term subsidence of soft clay due to an earthquakeStudy on long-term subsidence of soft clay due to an earthquake
Long-term subsidence of soft clay after the 2007 Niigata Prefecture Chuetsu-Oki Earthquake was observed in Kashiwazaki. In order to investigate the mechanism, ground investigations, indoor element tests and soil-water coupled FE analysis are conducted.

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