Free Falling Installation Test of Artificial Steel Reef

  • N. Sakaki
  • T. Okamoto
Conference paper


In this paper, the free falling installation of the large-size Artificial Steel Reef (ASR) will be discussed in order. Specifically, a prediction of its landing point on the sea floor, the force of the impact to evaluate the stress of the members of the ASR upon landing and an actual impact acceleration for evaluating impact force will be explored.

The accuracy of the method for predicting the landing point is studied through experimental results of a laboratory model-test and a full-scale test in the field. The measured stress of the members of the ASR in the drop test on to the ground, is compared with one which was obtained by the Finite Element Method (FEM) which applies the impact force, evaluated by measured accelerations. The impact accelerations, measured upon the landing on the sea floor, is compared with that recommended by the design guide.


Measured Stress Impact Force Drop Test Artificial Reef Allowable Stress 
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    Makoto Nakamura.: “SUISAN DOBOKU GAKU”, 1979, pp 401–456.Google Scholar
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    An imcorporated association Japan Fisheries Resources Preservation Association: The Structural Design Guide for Coastal Fisheries Consolidation and Development Enterprise 1978, pp 7–18.Google Scholar
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    Richard H. MacNeal, Editor.: MSC/NASTRAN Handbook For Linear Static Analysis, MSC/NASTRAN Version 60, The MacNeal-Schwendler Corporation, 7442 North Ficrueroa Street Los Angles, California 90041, 1980.Google Scholar

Copyright information

© Springer-Verlag Tokyo 1985

Authors and Affiliations

  • N. Sakaki
    • 1
  • T. Okamoto
    • 1
  1. 1.Civil Engineering Laboratory, Structure Research Department, Technical Research CenterNippon Kokan K.KMinami-Watarida, Kawasaki, 210Japan

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