Energy Band and Wave Modes for a Super Cell of a Defected Periodic Viaduct

Energy Band and Wave Modes for a Super - Cell of a Defected Periodic Viaduct

  ijett-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
  
© 2013 by IJETT Journal
Volume-4 Issue-6                      
Year of Publication : 2013
Authors : Cheng-Yong He , Li Lei , Jian-Fei Lu

Citation 

Cheng-Yong He , Li Lei , Jian-Fei Lu. "Energy Band and Wave Modes for a Super - Cell of a Defected Periodic Viaduct". International Journal of Engineering Trends and Technology (IJETT). V4(6):2253-2260 Jun 2013. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group.

Abstract

In this study, the influence of different defects on the energy bands of a s uper cell of a defected periodic viaduct (DPV) when considering the pile - soil - structure interaction is investigated. By using the coupled boundary element method (BEM) model for the piles supporting the superstructure of the DPV , the compliances of the pil e foundation s are obtained . By using the compliances of the piles and the transfer matrices for the beams and piers, the transfer matrix for each span of the DPV is determined. T he eigenvalue equation for the super cell of the DPV can be developed by using the transfer matri ces for the spans of the super cell and the Bloch theorem, the solution of which yields the energy bands for the super - cell. Numerical results show that the defected span may give rise to the defect state for the super cell of the DPV.

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Keywords
Defected periodic viaduct (DPV); super - cell method; the boundary element method (BEM); the pile - soil - structure interaction.