Kyoto University · 환경과학
공희의 교수의 연구실은 주로 토양의 비배수 상태에서의 파손 거동과 지반의 유동성 파손 메커니즘을 중심으로 연구를 진행하고 있습니다. 특히 태풍 등 강우로 인한 대규모 토사붕괴와 유동성 토질의 장거리 이동 현상에 기여하는 비배수 전단 거동을 실험적·이론적으로 분석하고 있으며, 고밀도 및 저밀도 모래, 석회성 토양 혼합물의 파손 특성에 대한 심층 연구를 수행하고 있습니다. 이는 기후변화에 따른 극단적 강우에 의한 지반 재해 예측 및 방지 기술 개발에 기여합니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract A typhoon (Typhoon No. 10) attacked Shikoku Island and the Tyugoku area of Japan in 2004. This typhoon produced a new daily precipitation record of 1317 mm on Shikoku Island and triggered hundreds of landslides in Tokushima Prefecture. One catastrophic landslide was triggered in the Shiraishi area of Kisawa village, and destroyed more than 10 houses while also leaving an unstable block high on the slope. The unstable block kept moving after the event, showing accelerating and decelerati
The undrained shear behavior of soils with progress of shear displacement is essential to the understanding of liquefied slope failures with long travel distance. In this paper, using a newly developed ring shear apparatus, a series of ring-shear tests were conducted on a silty sand to examine the undrained behavior of sand subjected to long shear displacement. Based on the test results, the undrained shear behavior of sands with a wide range of densities is discussed. A very low effective stres
The shearing behavior of saturated silty soils has been examined extensively by performing undrained and partially drained (the upper drainage valve of the shear box was open during shearing) ring-shear tests on mixtures of a sandy silt with different loess contents. By performing tests at different initial void ratios, the shear behavior of these silty soils at different initial void ratios is presented and discussed. Undrained-shear-test results showed that the liquefaction phenomena in ring-s
