766 research outputs found
Efficient Installation of Gravel Drains
The gravel drain system aims to avert liquefaction in a sandy soil by quickly dissipating excess pore water pressure. We have developed a compaction-rod type machine which allows efficient construction of gravel drains. Main attributes of this machine are: (1) extremely fast installation of gravel drains, (2) low noise, (3) low level of vibration, (4) virtually no ground deformation during construction, and (5) densification of the surrounding soil. Large-scale model tests demonstrated that a cone-type compaction rod is most effective in densifying the surrounding soil when installing gravel drains with our machine
Mechanical Properties on Electron Beam Welds of Constructional High Tension Steels (Report III)
Mechanical Properties on Electron Beam Welds of Constructional High Tension Steels (Report IV)
Untersuchungen uber die ElektronenstrahlschweiBbarkeit des hochfesten Stahls fur Konstruktion : Die Kerbzahigkeit des ElektronenstrahlschweiBguts bei der Tieftemperatur
Notes on the Black Flies investigated in Okushiri Island, Hokkaido, Japan and their Blood Sources (Diptera : Simuliidae)
Note on the Blood Sources of major Two Prosimulium Species in Hokkaido, Japan (Diptera : Simuliidae)
Studies on the Relation Between Blood Sources and the Shape of Fore tarsel Claw of the Female Black Flies in Hokkaido (Diptera : Simuliidae)
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