COUPLED VIBRATION OF EMBEDDED FOUNDATION

The paper describes a simplified mathematical model of the coupled horizontal and rocking vibration of an embedded foundation. Vibration tests of the foundation with different embedments were conducted and compared with different methods. Conclusions drawn from the theoretical analysis and dynamic experiments are presented. For the method here described, only 4 parameters are required in the displacement expression. The parameters can be backcalculated from the dynamic response of the foundation with the present model. As embedment increases, the calculated error is excessive from the modified parameters method in which the additional moment caused by lateral resistance of side soil is not considered. With increasing embedment of the foundation, the stiffness and damping of the coupled horizontal and rocking vibration of the footing increases rapidly and the resonant amplitude decreases. Thus, foundation embedment may be effective for shock absorption.

• Availability:
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• Corporate Authors:

  American Society of Civil Engineers

  345 East 47th Street
  New York, NY  United States  10017-2398
• Authors:
  • Han, Y Q
• Publication Date: 1989-9

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: p. 1227-38
• Serial:
  • Journal of Geotechnical Engineering
  • Volume: 115
  • Issue Number: 9
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9410

Subject/Index Terms

• TRT Terms: Anchoring; Damping (Physics); Footings; Foundations; Mathematical models; Shock absorbers; Stiffness; Structural analysis; Structural mechanics; Vibration tests
• Uncontrolled Terms: Embedment; Structural behavior
• Old TRIS Terms: Foundations (Structures); Vibrational testing
• Subject Areas: Geotechnology; Highways; I42: Soil Mechanics;

Filing Info

• Accession Number: 00488413
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 30 1989 12:00AM