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Volume 12 (2002)
- Issue 4 Pages 256-
- Issue 3 Pages 174-
- Issue 2 Pages 103-
- Issue 1 Pages 4-
Volume 12, Issue 1
Displaying 1-7 of 7 articles from this issue
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Atsushi SUZUKI, Shigeki KANOU, Toshiaki HARA2002 Volume 12 Issue 1 Pages 4-16
Published: March 15, 2002
Released on J-STAGE: April 30, 2010
JOURNAL FREE ACCESSThis paper focuses on the relationship between intervals of a RCD concrete placement and shear strength of the horizontal joint under the condition of non-treatment by a laboratory test. The purpose is to realize of the continuous RCD construction method, or getting up speed and reducing laborious works. It is based on the conception that it is able to decrease the frequency of green cutting and mortal spreading of the RCD construction method by expecting an ability of the combination of concrete itself. The results of this study show that the shear strength of horizontal joints compared that of the concrete between them decrease more as the time to place the concrete longer, even in a few hours from the placement in which there aren't any hydrate by an observation of the scanning electron microscope. This means that it is necessary to examine the effects on the shear strength of the horizontal joint from points of view of the mix proportion and the methods of the concrete compaction.View full abstractDownload PDF (4510K) -
Natsuo HARA, Yuji AKASAKA, Isamu ASANO, Yuji KOHGO2002 Volume 12 Issue 1 Pages 17-26
Published: March 15, 2002
Released on J-STAGE: April 30, 2010
JOURNAL FREE ACCESSWe considered that applying steel fiber reinforced concrete to fill-type dam gallery, for the purpose of the rationalization of the execution and safety in the execution improving. Steel fiber reinforced concrete is substituted for this way of constructing it, though it was built so far with steel-bar reinforcement concrete. As for applying steel fiber reinforced concrete to fill-type dam gallery, materiality examined how to evaluate it here. First, we changed the kind of the steel fiber and the amount of mixing, and grasped tension character of the steel fiber reinforced concrete. Next, we enforced bend strength examination of the beam which changed beam height. Further, we enforced load examination of the fill-type dam gallery model. We compared finet element analysis of taking the destruction energy of the model load examination into consideration with the non-linea finet element analysis with bend strength test result of the beam. As this result, it became clear that the action of the steel fiber reinforcement concrete in consideration of effect on a dimension could be evaluated.View full abstractDownload PDF (3099K) -
Yoshikazu YAMAGUCHI, Toshiyuki AKAMATSU2002 Volume 12 Issue 1 Pages 27-45
Published: March 15, 2002
Released on J-STAGE: April 30, 2010
JOURNAL FREE ACCESSBecause embankment dams are often constructed on soft rock foundations, it is important to precisely predict deformation of the foundations due to the fill placement in the design stage. For the accurate evaluation of settlement and strain of rock foundation surface during the construction, the influence of the scattering of the deformability of foundations on the deformation behavior should be investigated. In this paper, the evaluation method of settlement and strain of rock foundation surface during the construction was studied with stochastic deformation analysis considering the scattering of the deformability of dam foundation. Based on the analytical results, the dam foundation design with the deterministic method for dam foundation was enthusiastically discussed.View full abstractDownload PDF (4647K) -
Tatsuo HATTORI, Shiro KAI, Yasuhisa HIROTA, Yasuhiko TAKADA2002 Volume 12 Issue 1 Pages 46-54
Published: March 15, 2002
Released on J-STAGE: April 30, 2010
JOURNAL FREE ACCESSA certain amount of water is necessary for the environmental preservation even dividing works have made. In this case, the down stream river maintenance flow is expected to be large when the main stream becomes smaller. It is also expected to be small when the stream become larger. In this paper, a planning procedure and a report of hydraulic model test of a new system of division works are presented, which is able to control a quantity of divided water flow.View full abstractDownload PDF (1988K) -
Kazuo KONAGAI, Jörgen JOHANSSON, Paola MAYORCA, Tetsuro YAMAMOTO, ...2002 Volume 12 Issue 1 Pages 55-66
Published: March 15, 2002
Released on J-STAGE: April 30, 2010
JOURNAL FREE ACCESSEl Salvador was struck by two devastating earthquakes within a month. The first quake of Jan. 13, 2001, which was centered off El Salvador's southern coast, damaged and/or destroyed nearly 108, 000 houses, and killed at least 944 people. One of the most spectacular aspects of the January 13 earthquake was the nationwide damage inflicted by landslides. Among total 445 landslides caused by this earthquake, Las Colinas landslide was the most tragic. The slipped soil mass washed many houses and therefore more than 500 lives to death. This report outlines the findings obtained through the reconnaissance by the JSCE team and laboratory tests that followed it.View full abstractDownload PDF (5686K) -
The Dam Maintenance Management Working Group2002 Volume 12 Issue 1 Pages 67-81
Published: March 15, 2002
Released on J-STAGE: April 30, 2010
JOURNAL FREE ACCESSDownload PDF (2860K) -
2002 Volume 12 Issue 1 Pages 82
Published: 2002
Released on J-STAGE: April 30, 2010
JOURNAL FREE ACCESSDownload PDF (119K)
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