A simplified model for the analysis of machine foundations on a nonsaturated, elastic and linear soil layer


Asik M., Vallabhan C.

COMPUTERS & STRUCTURES, vol.79, no.31, pp.2717-2726, 2001 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 79 Issue: 31
  • Publication Date: 2001
  • Doi Number: 10.1016/s0045-7949(01)00149-3
  • Journal Name: COMPUTERS & STRUCTURES
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.2717-2726
  • Keywords: vibration analysis, layered medium, machine foundation, geometric damping, strip footing, circular footing

Abstract

A simplified semi-analytical method, which considers advantages of analytical and numerical approaches, is developed to compute the response of a rigid strip and circular machine foundations-subjected to a harmonic excitation-resting on a layer of soil deposit with a noncompliant rock or rock-like material at the base. The method is based on variational principles and minimization of energy using Hamilton's principle. Nondimensional equations are developed for both type of footing resting on a soil layer. Dynamic response characteristics are plotted by using nondimensional parameters for both types of footing. (C) 2001 Elsevier Science Ltd. All rights reserved.