Soils and Foundations
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#1Satoru Ohtsuka (Nagaoka University of Technology)H-Index: 5
#2Yutaka S. SatoH-Index: 53
Last. Kenichi Maeda (Nagoya Institute of Technology)H-Index: 11
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Abstract null null Due to Typhoon Hagibis (Typhoon No. 19) in October 2019, also known as the Reiwa 1 East Japan Typhoon, many parts of the Chikuma River’s levee in Nagano Prefecture were damaged. There were instances of levee collapse due to overtopping, and an electric railway bridge also collapsed when an eroded revetment broke. In the present study, these disasters were investigated. null The investigation considered both the geology - geomechanics and the hydraulics of the levee collapse du...
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#1Yonghong Wang (Qingdao University)H-Index: 2
#2Sang Songkui (Qingdao University)H-Index: 1
Last. Lei Su (Qingdao University)
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Abstract null null To investigate the load transfer mechanism of open and closed Pre-stressed High-strength Concrete (PHC) piles jacked into layered soil, a full-scale in-situ test was conducted. In this test, the axial stress experienced by one open and two closed PHC pipe piles during jacking into layered soil was monitored using Fiber Bragg Grating (FBG) sensors mounted on pile shaft. The test results showed that (1) The jacking force on pile depended on the soil mechanical properties at the ...
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Abstract null null In the case of cement-stabilized soils cured under the influence of overburden stress, it is necessary to consider two different timelines of cementation and consolidation, along which the structures of stabilized soils evolve. These two timelines are interrelated and ought not to be considered separately, especially in the early stage of curing when significant structural changes occur. In this study, the strength and deformation characteristics of cement-stabilized clay subj...
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#1Jian-lin Yu (ZJU: Zhejiang University)H-Index: 4
#2Jia-jin Zhou (ZJU: Zhejiang University)H-Index: 6
Last. Ri-hong ZhangH-Index: 6
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Abstract null null This paper presents a series of laboratory tests on cemented soil with high water content, and the water content of cemented soil samples were all larger than the liquid limit. A group of model PHC pile-cemented soil interface shear tests were then conducted to investigate the interface frictional capacity. Finally, a group of full-scale tests on PHC pile-cemented soil columns were conducted to study the frictional capacity of cemented soil-soil interface. The test results sho...
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#1Tomohiro Kato (Kyoto University)H-Index: 1
#2Lincoln W. Gathuka (Kyoto University)
Last. Tetsuo Yasutaka (AIST: National Institute of Advanced Industrial Science and Technology)H-Index: 16
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Abstract null null Sorption-desorption column tests using acrylic columns (ϕ 5 cm × h 10 cm) were employed to evaluate the sorption performance of an attenuation layer against geogenic contamination. The attenuation layer material was silica sand amended with 1, 5, or 10% of a stabilising agent. The main component of the agent was magnesium oxide. The sorption behaviour of the materials was determined by a fluoride solution (C0 = 80 mg/L F-), while the desorption behaviour was determined by dist...
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#1Quanshui Huang (WHU: Wuhan University)H-Index: 1
#2Gang Ma (WHU: Wuhan University)H-Index: 21
Last. Lin Mingchun (WHU: Wuhan University)
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Abstract null null The mechanical properties of geo-materials, porous media, and cementing materials are inherently variable, owing to the presence of pores, cracks, and other microscale heterogeneities, known as Griffith flaws. In this study, we focused on the influence of disordered pore distribution on the mechanical properties of bonded granular materials and performed simulations of uniaxial tensile testing through 2D Discrete Element Method (DEM). The sample was modeled in the form of an a...
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#1Zhen-Zhen Nong (Jiangsu University)
#2Sung-Sik Park (KNU: Kyungpook National University)H-Index: 12
Last. Dong-Eun Lee (KNU: Kyungpook National University)H-Index: 19
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Abstract null null The liquefaction resistance and correction factors Kσ and Kα of Nakdong River sand obtained from cyclic triaxial (CTX) tests were compared with those determined by cyclic simple shear (CSS) tests to ascertain the importance of the reduction factor Cr and correction factors Kσ and Kα in liquefaction evaluations, especially in view of the lack of comparative liquefaction assessments based on different laboratory test apparatuses. All samples used for the comparisons were obtaine...
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#1S Yimsiri (BUU: Burapha University)H-Index: 9
#2Wanwarang Ratananikom (BUU: Burapha University)H-Index: 2
Abstract null null The finite element analysis are performed to investigate a long-term response of flexible pipe buried in sand trench embedded in native soft clay. The investigated long-term behaviors are due to effects of backfill soil structure rearrangement and native clay consolidation. The finite element results suggest that the short-term response of pipe depends strongly on trench widths but independent of trench depths due to the dependence of arching effect with trench width. However,...
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#1Rasel Sheikh (Yamaguchi University)
#2Yukio Nakata (Yamaguchi University)H-Index: 24
Last. Masahiro KanekoH-Index: 2
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Abstract null null Real-time unstable slope monitoring is essential for recognition of landslide occurrence, as well as for early warning to reduce landslide-induced damages. This study investigated an unstable slope monitoring system that consists of tilt sensors aiming to establish an advanced time prediction model (TPM) for landslide early warning. The monitoring process utilized additional support devices (e.g. pipe strain gauges, water level gauges and a rain gauge) installed on a natural c...
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#1Haruka Tomobe (Kyoto University)H-Index: 1
#2Kazunori Fujisawa (Kyoto University)H-Index: 25
Last. Akira Murakami (Kyoto University)H-Index: 71
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Abstract Understanding mechanical interactions at the root-soil interface is essential to predict the erosion of vegetated slopes. Recently, the shear strength of vegetatedil under changing hydraulic conditions has been measured and modeled; however, root-soil interfaces have not been investigated under changing hydraulic conditions. This paper proposes (1) a novel pullout apparatus to measure the shear strength at the root-soil interface under changing suction, (2) a Mohr-Coulomb-Vilar (MCV) sh...
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Top fields of study
Geology
Consolidation (soil)
Geotechnical engineering
Shear strength
Materials science
Deformation (mechanics)
Structural engineering