Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
Volume 34, Issue 4
Displaying 1-9 of 9 articles from this issue
  • Kazuo Inoue
    1996 Volume 34 Issue 4 Pages 7-14
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    The headed studs have been used to the connector between steel and concrete. In the field of building construction, most of the headed studs are applied to the composite beam as the shear connector. The present situation and the reviews of the stud are described. The mechanical properties of high strength stud and the purpose of the standardization of push-out test are also introduced.
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  • Y. Hayashi, T. Nakatsuka, K. Suzuki
    1996 Volume 34 Issue 4 Pages 15-23
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Recently, the grout-filled coupling sleeve has a tendency to be used frequently because of its superior construction efficiency, such as unnecessity of postcast concrete, large allowable limit to arrangement of reinforcing bars. This report mainly introduces on mechanical performance, stress transmission mechanism of the grout-filled coupling sleeve, mechanical characteristics of precast concrete members with the sleeves and important aspects on assemblage of precast concrete members.
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  • Yoshio Kakuta, Takashi Mikami
    1996 Volume 34 Issue 4 Pages 24-30
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Although a large number of projects of various kinds are under execution all over the country, submerged floating tunnels (SFT) have not yet been constructed which are seen as one of the most promising structures for strait crossings. This paper presents the outline on SFT up to the present day. First, the interesting features of SFT are described. Second, the developments of SFT in Italy, Spain and Norway are briefly discussed. Third, some background and information on SFT carried out by the Society of Submerged Floating Tunnel Technology Research in Hokkaido are given to some extent, including case examples.
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  • The making of a huge atrium and a three-story-basement by a top down method
    Satoshi Abe
    1996 Volume 34 Issue 4 Pages 31-39
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    The glass hall is mainly a huge atrium with a void space of 250 000 m3. The big roof presents a unique structure : it is supported by only two big columns. The layer displacement of the structure is affected by the stiffness of the column. An ultra-workable high strength concrete of 80 N/mm2 maximum strength is filled up in it. The site is surrounded by railways and thus, the 21-meter-deep underground construction has been carried out by a top-down method. Further, to prevent noise and vibration the diaphragm wall and the underground structure was to be separated, so a special top down method was necessary for the construction. The center of the basement at the B 2 level is a 2 story-high big exhibition hall. A 60-meter PC bridge, which serves as a brace, is hang over at the B1 level. Pre-casted blocks are linked together at the site by prestressing to make this underground bridge.
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  • K. Yamamoto, T. Ishihara, N. Takeda, K. Abe
    1996 Volume 34 Issue 4 Pages 40-48
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    The bobsleigh/luge track for the Winter Olympic Games in Nagano is the first artificially frozen course of reinforced concrete construction in Japan. Shotcrete was applied to this course, as placing in forms was impracticable within the limitations of cost and construction period, due to its complicated sectional shapes that change three-dimensionally along the course. The concrete was required to have adequate filling capability into spaces between reinforcing bars and cooling pipes, adhesion to vertical walls, and resistance to freezing and thawing of the track surfaces. A shotcrete with excellent placeability and durability was produced by the use of a viscosity agent and an air-entraining and high-range water-reducing agent, as well as adequate proportioning of the materials. This paper reports on the materials and mix proportions of the shotcrete applied to the track. The application method is introduced as well.
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  • E. Minemura, S. Makino, N. Nishida, H. Takahashi
    1996 Volume 34 Issue 4 Pages 49-55
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Kangawa Bridge (tentative name) of Jyou-Shinetsu Highway, under construction in Nagano prefecture, is a continuous RC arch bridge of 20 spans and 714.5m in total length. These arch rib are 60 cm in minimum thickness and are well-set by upper formworks. Accordingly the compaction work of placing concrete was severe. Then, for the purpose of the cancellation compaction work and to examine the possibility of the rational construction, Super Workable Concrete which could be placed easily without vibration was applied at one span in this construction experimentally. This report focuses on several construction works as follows : the mix proportion of concrete, the quality control of concrete, the site measurement of the thermal stress and the lateral pressure against formwork, the reduction of arch rib section and the rational construction in the future.
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  • [in Japanese], [in Japanese]
    1996 Volume 34 Issue 4 Pages 57-63
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Download PDF (2022K)
  • [in Japanese]
    1996 Volume 34 Issue 4 Pages 72-82
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Download PDF (2011K)
  • [in Japanese]
    1996 Volume 34 Issue 4 Pages 83-84
    Published: April 01, 1996
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Download PDF (380K)
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