LONG-TERM BEARING PERFORMANCE OF IN-SITU CONCRETE PILES - TEST AT KAMIHOROMUKAI RIVER BRIDGE

Aging changes in the dynamic response under train passage and the static behavior under dead load of in-situ concrete piles (RCD in this paper) which have come to be widely applied as a noiseless, vibration-free foundation method have been investigated. As the result the long-time bearing performance of in-situ piles, even though short, under the condition of sandy ground as illustrated in the bridge treated here has been found to be characterized in that: (1) The share of the surrounding friction in the live load is considerably large and it can be expected to last long; (2) the stresses generated in different parts of a pile are relatively low; and (3) there is a certain variance in the bearing ability of an individual pile and it takes considerable repetitions of dynamic loading before full play can be given to the bearing ability, but the ability is steadily stabilized with aging.

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  • Corporate Authors:

    JAPANESE NATIONAL RAILWAYS

    TOKYO,   Japan 
  • Authors:
    • NEMOTO, K
    • Harada, Y
    • Ozawa, T
    • Itai, N
  • Publication Date: 1973-6

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Filing Info

  • Accession Number: 00046955
  • Record Type: Publication
  • Source Agency: Railway Technical Research Institute
  • Report/Paper Numbers: 174, 1972 Quart Rpt
  • Files: TRIS
  • Created Date: Nov 14 1974 12:00AM