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Geotechnical Engineering Laboratory

Main Project@‚¨’m‚η‚Ή

Mechanism of group pile foudation

When it comes to the pile group effect within the limits there is a pile spacing refers to the phenomenon that acts as a single group, the nature of the bearing capacity and deformation will differ in the case of a single pile. It has been found that less than simply superimposed single pile bearing capacity of the pile group, its mechanism has not been elucidated yet. In this study, we have made a detailed measurement and analysis of soil-pile behavior during loading and scientific understanding of the bearing capacity of the pile group in sand ground. Using a large soil bin w1.6m ~ d1.6m ~ h1.2m equipped with a loading as test equipment. Distribution of stress in the ground are using Tactile sensor, we have been able to capture the stress distribution in the surface can not be measured in terms of gauge soil.


Disaster prevention and monitoring of slope

Slope where there is a risk of heavy rain disaster, you can not place more than 500 000 in Japan alone, do all these costly disaster prevention measures. Our country So, while the development of steep slopes in the concentration of population in urban areas, facilities and accommodation of the mountain is left, in rural areas due to heavy rains landslides occur each year You had to.
So, anyone, we have developed easy to operate, inexpensive alarm system.

, Such a system E
Residents voluntary disaster prevention E
Emergency monitoring and preventing secondary disasters after the disaster E
Budget disaster prevention in developing countries I applied to like.
Continuing improvements of electronic circuits and method of operation, low cost single digit, we have sensors that can be installed in 30 minutes, the battery runs for three years.
Already begin mass production in factories, ground disaster applications, construction management, it has been put to practical use in several places at home and abroad 10. Kobe, for research purposes, the high Knowledge, such as the slope of Ehime, the Three Gorges Dam in China, in Sichuan landslide slope, is in the pilot. Sichuan Province, China, northern (Taiwan, fiscal year 2012, the South In cooperation with various research institutes in Asia, such as Vietnam mainly, we are planning survey of the slope, the observed decay experiments).

Suppression and ground deformation due to liquefaction

Damage was found buried pipe lifeline by liquefaction in various regions, including the earthquake in Urayasu, Chiba Prefecture unprecedented happened on March 11, 2011. In this study, with the goal of developing effective against liquefaction technology and economic life of underground pipe line.
Scrutiny of the case earthquake 1) Life Line item: Research to understand the mechanism of damage to lifelines suffered by the Great East Japan Earthquake, stakeholders as necessary to enhance the feasibility of the technology development mitigation scrutiny report damage investigation interviews to
Shaking the existing pipe experiment
2-1) Research items
Soil chamber experiments on chemical injection 2-2) Research items Shaking confirmed by experiment the performance of the backfill material using a jig and waste tire chip coarse-grained materials, waste glass recycled aggregate concrete: restoration of damaged pipe 3) research items.