Research Article
Jun 1978
Amplitude Reduction of Surface Waves by Trenches
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VIEW THE REPLYAuthors: Genevieve Segol, AM.ASCE, John F. Abel, M.ASCE, and Peter C.Y. Lee, AM.ASCEAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 104, Issue 3
Abstract
The effect of trenches and barriers in reducing the disturbances created by a time-harmonic line load acting on the surface of a linearly elastic, layered slab is investigated. In this approach, boundary conditions are applied which take into account the stresses due to disturbances propagating in the adjacent, regular, semi-infinite regions. The dimensions and the location of the barrier are systematically varied for several frequencies of excitation, and the results are found to be in agreement with experimental observation. It is shown that the trench effectiveness is primarily a function of the ratio of its depth to the wavelength of the propagating disturbances, h/λ. For a value of h/λ greater than 0.6 the disturbances are significantly reduced. The results indicate that the location of the trench and the shape of its cross section, however, are not important parameters. The influence of backfilled trenches is also investigated and these are found to be less effective in reducing the vibration amplitudes than open trenches.
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Published In
Journal of the Engineering Mechanics Division
Volume 104 • Issue 3 • June 1978
Pages: 621 - 641
Copyright
© 1978 American Society of Civil Engineers.
History
Published in print: Jun 1978
Published online: Feb 3, 2021
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Authors
Affiliations
Genevieve Segol, AM.ASCE
Bechtel Inc., San Francisco, Calif,; formerly, Grad. Student and Research Assoc., Dept. of Civ. Engrg., Princeton Univ., Princeton, N.J.
John F. Abel, M.ASCE
Asst. Prof., Dept. of Structural Engrg., Cornell Univ., Ithaca, N.Y.; formerly, Research Assoc. and Lect. Dept. of Civ. Engrg., Princeton Univ., Princeton, N.J.
Peter C.Y. Lee, AM.ASCE
Prof., Dept. of Civ. Engrg., Princeton Univ., Princeton, N.J.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
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