ON IMPACT-LIKE FAILURE OF REINFORCED CONCRETE STRUCTURES BY HYOGO-KEN NANBU EARTHQUAKE (KOBE, 1995)

First, impact-like failure phenomena observed in Hyogo-ken Nanbu Earthquake (Kobe, 1995) are described. Second, stress wave transmission characteristics within a multi-layered ground excited by vertical ground motions are discussed through one-dimensional stress wave propagation analyses. Third, a stress amplification phenomenon in the cross section of column in a bridge R/C pier under a pulse-like vertical stress induced at the bottom face of footing slab is examined by 3D finite element method (FEM) analyses. Last, 3D FEM analyses for a bridge pier model supported by multi-layered ground model are carried out, and it is made clear that high frequency characteristics of vertical ground motions during the earthquake gave the most significant effect on an impact-like failure of R/C column due to large axial tensile and compressive forces.

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  • English

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  • Accession Number: 00760200
  • Record Type: Publication
  • ISBN: 1853124567
  • Files: TRIS
  • Created Date: Feb 11 1999 12:00AM