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|Title:||Antiplane tunnel-soil-foundation interaction effects on primary-secondary systems|
|Authors:||Koh, C.G. |
|Source:||Koh, C.G.,Balendra, T.,Ho, Y.C. (1990-11-08). Antiplane tunnel-soil-foundation interaction effects on primary-secondary systems. Journal of Sound and Vibration 142 (3) : 499-514. ScholarBank@NUS Repository.|
|Abstract:||The interaction of a tunnel-soil-foundation system excited by antiplane harmonic forces in a tunnel embedded in a viscoelastic half-space is investigated. A closed form substructure approach for circular geometries is obtained by employing the method of wave functions expansion and the image technique. The total soil-structure interaction problem is decomposed into a foundation radiation problem and a tunnel radiation problem. The impedance matrix for the corresponding substructure problems is obtained and used to evaluate the steady state response of a primary-secondary system. A parametric study is carried out for the effects of tunnel-foundation geometry and soil properties on the impedance matrix. The displacement amplitudes of the foundation and primary-secondary systems are found to be primarily influenced by the foundation size and spacing between the tunnel and foundation. The results obtained from the closed form solution is compared with a collocation boundary method. © 1990.|
|Source Title:||Journal of Sound and Vibration|
|Appears in Collections:||Staff Publications|
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