Concrete Journal
Online ISSN : 2186-2753
Print ISSN : 0387-1061
ISSN-L : 0387-1061
Volume 30, Issue 5
Displaying 1-9 of 9 articles from this issue
  • Tamon Ueda, Toshiyuki Shioya
    1992 Volume 30 Issue 5 Pages 5-20
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Steel-concrete sandwich composite structures are a type of composite structures which is a layer structure of skin steel plate (s) and core concrete. The sandwich composite structures increase buckling strength of the steel plates and prevent cracks of the core concrete from being exposed to environment. Furthermore ultimate strengths and deformability of the sandwich structures are better than those of comparable steel and concrete structures. This paper introduces practical examples, mechanical characteristics and special features during construction of the sandwich composite structures. Further research are also suggested.
    Download PDF (2461K)
  • Fumio Watanabe
    1992 Volume 30 Issue 5 Pages 21-28
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    The purpose of member design is to assure that the strength and the ductility of a member are greater (equal) than (to) those required in structural design of a building under the considered load condition. Therefore, the reliable estimation of required strength and ductility in structural calculation is of importance as well as the accuracy of design equations for strength and ductility. In shear design of a primarily earthquake resistant member, maximum induced shear force and hinge rotation angle during severe earthquake excitation are essential to be estimated. For those required member performances, each constituent member is designed for shear. However, in current design procedure indicated in the Building Law of Japan and relating regulations the required performances of constituent members for shear is not clear as well as the structural performance of whole buildings. In this report, current design procedure for shear is briefly introduced and some problems involved in it is also pointed out on the basis of above mentioned viewpoints. They are mainly clue to the allowable stress design method where the design shear force and required ductility of plastic hinge region would not be properly estimated at the ultimate limit state of a building. In near future, the limit state design method would take place of the allowable stress design method, where the rational and consistent shear design method of constituent members is required on the basis of the reliable calculation method for design shear force and accurate shear design equations.
    Download PDF (1238K)
  • N. Kubota, S. Egawa, A. Matsuoka, T. Shimizu
    1992 Volume 30 Issue 5 Pages 29-43
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Tama River and Kawasaki Fairway Tunnels in Expressway Bay-shore Route are now under construction by submerged tunneling method. This report presents design of pile-foundation of the tunnel elements, mechanism of flexible-joints connecting these elements, control of cracks in the concrete during the prefabrication, out-fitting of the elements and immersing operation.
    Download PDF (3618K)
  • H. Taniguchi, H. Okamoto, K. Hamada, H. Yasui
    1992 Volume 30 Issue 5 Pages 44-52
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    A box shaped half precast column element molded by centrifugal force, “Pre-column”, has been developed. While maintaining advantages of the full precast concrete, Precolumn has additional advantages such as the lightness of elements and the flexibility in the choice of the re-bar splice method compared with the full precast concrete. In the warehouse construction reported here, Pre-column, with other methods such as the precast form for the drop slab, the metal deck form and the welded mesh re-bars method are used to meet the shortage of the construction workers. This report explains the outline of this construction and the results of concrete filling tests in Pre-column. The test results show that the rate of placing is an important factor to control the lateral pressure of filling concrete.
    Download PDF (1778K)
  • Kiba Park Grand Bridge : Cable-Stayed Prestressed Concrete Bridge
    Y. Matsuoka, T. Shindo, H. Akatsuka
    1992 Volume 30 Issue 5 Pages 53-62
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Kiba Park, having a total area of 24.2 ha, is being constructed under a concept of “Park of Water and Green Forest”. It was decided by the Ministry of Construction to be the Memorial Park for the Emperor's 50th Anniversary Sovereign. Kiba Park Grand Bridge, crossing over route No. 472 (Kasaibasi road) and Sendaibori River, will be a cable-stayed prestressed concrete bridge which links three parts of the park (northern, central and southern part) together. Due to the excellence in image design, the bridge will serve as the symbol of the park. Furthermore, it will also serve as an emergency evacuating path for the pedestrians at the time of earthquake disaster. This report describes the application of a compaction-free super workable concrete on the casting of main tower of this bridge.
    Download PDF (2718K)
  • M. Hayakawa, H. Ichihara, T. Yamada, T. Shindo
    1992 Volume 30 Issue 5 Pages 63-69
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Super workable concrete was employed to construct a new building. The outer wall of the building is architectural concrete, and creating a highly durable concrete wall was requested. Prior to the work, it was confirmed that the super workable concrete has good compactability, low permeability, and low drying shrinkage. The construction method was selected through placing tests. In the construction work, lateral pressure of fresh concrete and pressure loss along the pipeline during pumping were measured. Through the actual work, it was confirmed that the super workable concrete has excellent compactability.
    Download PDF (1945K)
  • [in Japanese]
    1992 Volume 30 Issue 5 Pages 70-75
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Download PDF (1172K)
  • [in Japanese]
    1992 Volume 30 Issue 5 Pages 91-96
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Download PDF (982K)
  • [in Japanese]
    1992 Volume 30 Issue 5 Pages 97-101
    Published: May 01, 1992
    Released on J-STAGE: April 26, 2013
    JOURNAL FREE ACCESS
    Download PDF (2184K)
feedback
Top