COMPLIANCE FUNCTION OF FOOTING IN TWO-LAYER MEDIUM

The paper presents a set of formulas to determine the complex swaying compliances for embedded rigid footings in a two-layer medium, excited by a harmonic forcing function. The bottom layer generally, though not necessarily, consists of rock. The top layer is with or without material damping. The results obtained by using the formulas are compared with "exact" solutions by the finite element and semi-analytical methods. Comparisons between the results of the suggested formulas and the "exact" solutions show excellent agreement for practical cases. Parametric studies have been made. They include the effects of material damping, depth of embedment, and relative shear wave velocities of the two layers. The results are directly applicable to many problems in soil-structure interation. /Author/

• Supplemental Notes:
  • From Volume I of Earthquake Engineering and Soil Dynamics--Proceedings of the ASCE Geotechnical Engineering Division Specialty Conference, June 19-21, 1978, Pasadena, California. Sponsored by Geotechnical Engineering Division of ASCE in cooperation with: ASCE Technical Council on Lifeline Earthquake Engineering, ASCE Los Angeles Section of their Geotechnical Engineering Group, Earthquake Engineering Research Institute, Soil and Foundation Engineers Association, Structural Engineers Association of Southern California, U.C.L.A. College of Engineering, University of Southern California, and California Institute of Technology.
• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Ettouney, M M
  • KAR, A K
• Conference:
  • From Volume I of Earthquake Engineering and Soil Dynamics--Proceedings of the ASCE Geotechnical Engineering Division Specialty Conference, June 19-21, 1978, Pasadena, California. Sponsored by Geotechnical Engineering Division of ASCE in cooperation with:
• Publication Date: 1978-6

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 425-440

Subject/Index Terms

• TRT Terms: Anchoring; Damping (Physics); Finite element method; Footings; Mathematical models; Rocks; Soil structure interaction; Stiffness; Wave motion
• Uncontrolled Terms: Embedment; Wave velocity
• Old TRIS Terms: Finite elements
• Subject Areas: Geotechnology; Highways;

Filing Info

• Accession Number: 00179759
• Record Type: Publication
• Report/Paper Numbers: Proceeding
• Files: TRIS
• Created Date: Oct 12 1978 12:00AM