Use of Soil-Structure Interaction Analysis to Optimize Cement Silos Foundation Design

Nonlinear dynamic soil-structure interaction (SSI) analysis was performed to evaluate a proposed deep-foundation scheme for heavy cement silos at Pier F in the Port of Long Beach, California. A conventional, code-based design with 24-inch octagonal precast concrete piles called for 552 piles to resist shear forces generated by the design earthquake. However, the SSI analysis performed with FLAC demonstrated that the number of piles could be reduced by more than 50%. The piles were modeled with elastic-perfectly plastic beam elements connected to a simplified superstructure whose mass and fundamental period approximated the dynamic characteristics of the silos. Piles interacted with foundation soils through non-linear p-y and t-z springs; and soils were represented by an elastic-plastic Mohr-Coulomb model coupled with an empirical pore-pressure generation scheme.

Language

  • English

Media Info

  • Media Type: Web
  • Features: Figures; References; Tables;
  • Pagination: pp 1167-1176
  • Monograph Title: Ports 2013: Success through Diversification

Subject/Index Terms

Filing Info

  • Accession Number: 01527940
  • Record Type: Publication
  • ISBN: 9780784413067
  • Files: TRIS, ASCE
  • Created Date: Mar 24 2014 3:03PM