›› 2009, Vol. 30 ›› Issue (11): 3469-3475.

• Numerical Analysis • Previous Articles     Next Articles

Study of three dimensional viscoelastic medium artificial boundary

ZHANG Bo1,2，LI Shu-cai1,2，YANG Xue-ying3，SUN Guo-fu1，GE Yan-hui1   

  1. 1. Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan 250061, China; 2. School of Civil and Hydraulic Engineering, Shandong University, Jinan 250061, China; 3. Shandong Urban Construction Vocational College, Jinan 250014, China
  • Received:2008-10-23 Online:2009-11-10 Published:2010-01-07

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Abstract:

In order to get the artificial boundary that suits to analyze nonlinear structure-foundation interaction problems, the viscoelastic artificial boundary simulating radiation damping of the far field medium was obtained from the elastic wave theory and viscoelasticity theory. The ability of viscoelastic artificial boundary to simulate radiation damping and methods of seismic wave motion input were studied. The results show good precision when simulating radiation damping of far fields with the viscoelastic artificial boundary obtained from this paper in solving structure-foundation interaction problems. Precise results can be obtained through seismic wave motion input methods obtained in this paper whether the input wave is simple harmonic one or simple nonharmonic one. The displacement peak value at the free earth surface is times as high as that of input wave in viscoelastic medium.

Key words: structure-foundation interaction, viscoelastic artificial boundary, viscoelastic medium, seismic wave motion input

CLC Number: 

  • TU 435
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