STABILITY CALCULATION FOR SEISMIC LOAD ON CAISSON FOUNDATION

THE SECTIONAL DIMENSION OF A BRIDGE SUBSTRUCTURE IS USUALLY DETERMINED BY SEISMIC LOAD DESIGN, IN WHICH CASE IT IS IMPORTANT TO KNOW THE MECHANICAL CHARACTERISTICS OF THE SOILS ADJACENT TO THE STRUCTURE WHEN THE SEISMIC LOAD IS APPLIED. MANY SUBSTRUCTURE DESIGNS ARE, HOWEVER, MADE WITHOUT A CLEAR ANALYSIS OF THE STRESS-STRAIN RELATIONS IN THE SOILS. IN THE PRESENT PAPER, SOIL STRESSES AND DISPLACEMENTS ADJACENT TO THE SUBSTRUCTURE IN THE PRESENCE OF SEISMIC LOADS ARE CALCULATED BY THE FINITE ELEMENT METHOD WITH THE SOIL AND THE STRUCTURE REGARDED AS A TWO- DIMENSIONAL CONTINUOUS BODY COMPOSED OF TWO UNITS WITH DIFFERING ELASTIC PROPERTIES. A COMPUTER PROGRAM WAS WRITTEN CAPABLE OF HANDLING 1000 UNKNOWN QUANTITIES AND 1000 PANEL POINTS. GENERAL TRENDS IN THE MECHANICAL PROPERTIES OF THE SOIL AND STRUCTURE WERE DETERMINED FROM EIGHT SOIL CONDITIONS AROUND THE FOUNDATION CAISSON. THE OUTPUT WAS IN NUMERICAL FORM. A COMPARISIN WAS MADE WITH THE RESULTS OF CONVENTIONAL STABILITY CALCULATIONS.

  • Authors:
    • Tada, H
    • YAMANE, T
  • Publication Date: 1971

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Filing Info

  • Accession Number: 00236437
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 23 1973 12:00AM