›› 2004, Vol. 25 ›› Issue (7): 1011-1016.

• Fundamental Theroy and Experimental Research •     Next Articles

Analysis of seismic response properties of layered foundation-nonlinear structure system

FANG Ying-guang   

  1. South China University of Technology, Guangzhou 510641, China
  • Received:2003-05-19 Online:2004-07-09 Published:2014-07-18

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Abstract: On the basis of dynamic equations for seismic analysis derived from system energy, the seismic response of layered foundation-nonlinear structure system is studied by means of asymptotic method (KBM). The analytical formulas of amplitude-frequency and phase-frequency are obtained. A series of calculating results for different values of foundation parameters are presented in seismic resonant area. And then according to corresponding calculating results, the effect of foundation parameters on seismic properties of structure is analyzed; and the nonlinear dynamic characteristics，such as distortion of resonant area, bifurcation and suddenly jumping of amplitude, as well as the path effect , are discussed. It is indicated that the value change of foundation parameters of the same sort causes remarkable influence on structure dynamic properties, and the calculating error by the current Code of seismic design might be obvious for the analysis of layered foundation- nonlinear structure system. The interaction between soil and structure and nonlinear properties must be considered in order that design parameters are more reasonable and optimal.

Key words: layered foundation, nonlinear structure, seismic response, bifurcation, catastrophe

CLC Number: 

  • TU 435
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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