All issues
Volume 64 (2002)
- Issue 6 Pages 605-
- Issue 5 Pages 523-
- Issue 4 Pages 329-
- Issue 3 Pages 223-
- Issue 2 Pages 163-
- Issue 1 Pages 3-
Volume 64, Issue 4
Displaying 1-14 of 14 articles from this issue
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Okitsugu WATANABE2002 Volume 64 Issue 4 Pages 329-339
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
JOURNAL FREE ACCESS -
Yoshiyuki FUJII, Okitsugu WATANABE, Kokichi KAMIYAMA, Hideaki MOTOYAMA ...2002 Volume 64 Issue 4 Pages 341-349
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
JOURNAL FREE ACCESS -
Takeo HONDOH2002 Volume 64 Issue 4 Pages 351-363
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
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Shuji AOKI, Kenji KAWAMURA, Takakiyo NAKAZAWA2002 Volume 64 Issue 4 Pages 365-374
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
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Shuhei TAKAHASHI2002 Volume 64 Issue 4 Pages 375-388
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
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Nobuhiko AZUMA, Kumiko GOTO-AZUMA, Keiji HIGUCHI2002 Volume 64 Issue 4 Pages 389-395
Published: July 15, 2002
Released on J-STAGE: February 05, 2010
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Purposes and recent resultsTakao KAMEDA, Hideaki MOTOYAMA, Fumihiko NISHIO2002 Volume 64 Issue 4 Pages 397-404
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
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Hiroyuki ENOMOTO, Kumiko GOTO-AZUMA, Takao KAMEDA, Shuji FUJITA, Hidea ...2002 Volume 64 Issue 4 Pages 405-414
Published: July 15, 2002
Released on J-STAGE: February 05, 2010
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Shuji FUJITA, Yutaka AGETA, Kumiko AZUMA, Hiroyuki ENOMOTO, Takao KAME ...2002 Volume 64 Issue 4 Pages 415-425
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
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Hiroshi OHNO, Vladimir Ya. Lipenkov2002 Volume 64 Issue 4 Pages 427-431
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
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Katsumi YAMANOI, Yasoichi ENDO2002 Volume 64 Issue 4 Pages 443-451
Published: July 15, 2002
Released on J-STAGE: February 05, 2010
JOURNAL FREE ACCESSA shear tester is a simple in situ device for indexing shear strength. The measurement is sensitive to frame size and geometry, rate-of-pull, and normal load on a shear plane.Several kinds of shear testers were used to measure the shear strength of snow cover. Comparing different types of testers, distributions of observed values agree well with each other. The effect of normal load on shear strength is not significant for most types of snow except for inadhesive snow. On dry snow(new snow, lightly compacted snow, compacted snow and granular snow), shear strength is revealed to be a power function of dry density. The strength of dry granular snow is smaller than that of other types of dry snow. Wet snow shows low shear strength compared to dry snow.Shear strength decreases with increasing water content;its decrease rate is expressed by an exponential function of volumetric water content. Thus, shear strength of snowσmay be formulated asσ=Kρdry2.91e-0.235θ, where ρdry is dry density, θ is volumetric water content and K is a constant which is experimentally determined by the snow type. Values of K are respectively equal to 9.40×10-4 and 4.97×10-4 on granular snow and new, lightly compacted and compacted snow.View full abstractDownload PDF (1078K) -
Takero HIROCHI, Shuichi YAMADA, Masataka SHIRAKASHI2002 Volume 64 Issue 4 Pages 453-460
Published: July 15, 2002
Released on J-STAGE: February 05, 2010
JOURNAL FREE ACCESSThe blocking phenomenon of ice-particle/water mixture flow through pipeline is a problem which must be solved before the engineering application of this flow to cold energy transportation in a district cooling system. In this work, the mechanism of the blocking of ice-particle slurry at a tube orifice is investigated and a criterion for blocking is presented. The cohesive nature of ice particles is shown to cause“compressed plug type blocking”and the compressive yield stress of a particle cluster is presented as a measure for the cohesion strength of ice particles.View full abstractDownload PDF (4449K) -
Kaoru IZUMI, Hitoshi NISHIKI2002 Volume 64 Issue 4 Pages 461-467
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
JOURNAL FREE ACCESSThe Japanese word “nadare” which means an avalanche first appeared in the literature, tanka poetry, in 1076. At that time “nadare” meant a full-depth avalanche in spring. In the middle of the Edo era, for the first time an essay referred to two types of avalanches; the surface avalanche in the dead of winter called “awa” or “washi” and the full-depth avalanche in spring called “nadare” or “nade”. In the late eighteenth century, early Meiji era, the Government unified the general term of avalanche into “nadare” in a nationwide survey of avalanche prevention forests. Since then the word “nadare” has changed its script or Chinese characters several times until now according to the national revision of the approved list of Chinese characters for daily use.View full abstractDownload PDF (1042K) -
Tsutomu KOKAWA2002 Volume 64 Issue 4 Pages 469-476
Published: July 15, 2002
Released on J-STAGE: August 07, 2009
JOURNAL FREE ACCESSA field study on both the construction and creep test of a 30-m span ice dome(25 m in base diameter, 9.2 m in height and 25 cm in average ice thickness)was carried out at Tomamu in Hokkaido during the winter of 2001.It took only six days for the completion of the big dome.The construction was done by blowing snow and spraying water onto an air-inflated membrane as formwork. Subsequent to the construction, a creep measurement was carried out under natural condition and the structural behavior up to collapse was examined.As a result, the average displacement rate of the central part from February 17th to March 23rd, was about 6 mm/day to 7 mm/day, and it was shown that the dome had good enough structural efficiency.Based on the result of this study, the application of a 30-m span ice dome for an architectural facility is basically possible.View full abstractDownload PDF (7933K)
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