FINITE ELEMENT ANALYSES OF HDR-4 EXCAVATION

The paper presents the results of finite element simulations of construction of a 40-ft-deep braced excavation called HDR-4 in Chicago. The computations are presented that were made after construction was complete to evaluate the capbility of existing methods to predict displacements associated with braced excavations. By comparing the computations with observed behavior at the HDR-4 test section, conclusions can be drawn concerning the existing ability to evaluate failure conditions in the field. A mixed finite element formulation involving displacements and pore pressures is the basis of the computational procedure. The study compared computed soil, pore water and sheet pile responses with detailed field observations. The results of a parametric study are presented. The importance of including sheet-pile installation in the simulation and selecting the proper type of soil model are illustrated. The paper discusses the limitations of existing methods of finite element analyses to compute soil displacements associated with braced cuts through clays.

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: p. 1590-09
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00616211
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Oct 31 1991 12:00AM