Elasto-Plastic FEM Analyses of Large-Diameter Cylindrical Structure in Soft Ground Subjected to Wave Cyclic Loading

The large-diameter cylindrical structures have been increasingly applied recently in coastal and offshore engineering practice in China. This novel type of structure is composed of a steel or reinforced concrete cylindrical thin-wall shell which is embedded partially into the ground by special penetration procedure. The performance of such structures is obviously different from that of the traditional gravity-type foundations. Therefore, in this paper, the elasto-plastic finite element procedure based on effective stress method is developed for the cylindrical structure subjected to cyclic wave loading. To simulate the behavior of soft soil under cyclic loading, an improved dynamic Cam-clay constitutive model proposed by Carter et al (1982) is numerically implemented into the finite element package ABAQUS through implicit integration algorithm. In the analyses, the contact-pairs algorithm in ABAQUS is employed to simulate nonlinear interaction behavior of the contact between the structure and soil. By using the proposed numerical method, the failure mode of cylindrical structure is obtained and distribution of friction stress on the wall outside of cylindrical structure is evaluated.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References;
  • Pagination: pp 30-35
  • Monograph Title: Slope Stability, Retaining Walls, and Foundations: Selected Papers From the 2009 GeoHunan International Conference

Subject/Index Terms

Filing Info

  • Accession Number: 01142233
  • Record Type: Publication
  • ISBN: 9780784410493
  • Files: TRIS
  • Created Date: Oct 13 2009 4:44PM