Maio 2014 vol. 1 num. 1 - 10th World Congress on Computational Mechanics
Full Article - Open Access.
VIBRATION REDUCTION BY LANDSCAPE SHAPING AT HIGH-TECH FACIL-ITY
This paper presents a numerical study on the reduction of vibrations in the ground. The influence of landscape shaping to reduce vibration levels induced by traffic is investi-gated by means of the finite element method with dynamic analyses. Both two-dimensional as well as three-dimensional finite element models are employed for the investigations. A har-monic point force is applied where the force is scaled to represent the frequency dependent traffic load. Finally, the vibration reduction effect is evaluated by comparing RMS-values at a number of different evaluation points. It is concluded from the analyses that the two-dimensional and three-dimensional models correlates fairly well. The performance of a hill is increased if it is preceded by a valley but when applying more valleys than hills, amplification may occur. When using continuous hills instead of a checkered pattern, the hills seem to cap-ture and guide waves in the direction of the hill. Locally this could reduce vibrations of sig-nificant importance. Applying the constraints given within the numerical example, vibration reductions of approximately 20 % could be seen.
Palavras-chave: Shaped landscape, Vibration reduction, Wave propagation, Soil dynamics, Finite element method.,
-  Andersen L., DCE Lecture No.3: Linear elastodynamic analysis, Aalborg University, 2006.
-  Bathe K-J., Finite element procedures, Prentice Hall, New York, 2006.
-  Chopra A. K., Dynamics of structures, Prentice Hall, Upper Saddle River, 1995.
-  Craig Jr R. R., Structural dynamics, John Wiley Andamp; Sons, New York, 1981.
-  Das B. M., Ramana G. V., Principles of soil dynamics, Cengage Learning, Stamford, 2011.
-  Lee V. W., Wu X., “Application of the weighted residual method to diffraction by 2-D canyons of arbitrary shape: I. Incident SH waves”, Soil Dynamics and Earthquake En-gineering, 13, 355-364, 1994.
-  Lee V. W., Wu X., “Application of the weighted residual method to diffraction by 2-D canyons of arbitrary shape: II. Incident P, SV and Rayleigh waves”, Soil Dynamics and Earthquake Engineering, 13, 365-375, 1994.
-  Mossessian T. K., Dravinski M., “Scattering of elastic waves by three-dimensional sur-face topographies”, Wave motion, 11, 579-592, 1989.
-  Norwegian Geotechnical Institute, Indata till beräkningarna för Linac-tunneln, Start-byggnaden och SPF, Report 20110012-00-3-TN, 2011.
-  Persson P., Analysis of Vibrations in High-Tech Facility, Report TVSM-5164, Division of Structural Mechanics, Lund University, 20
-  Persson P., Persson K., Analysis of Dynamic Soil-Structure Interaction at High-Tech Facility, Proceedings of NSCM-23: the 23rd Nordic Seminar on Computational Me-chanics, Stockholm, 2010.
-  Persson P., Persson K., Sandberg G., Reduction of traffic-induced vibrations at high-tech facility using trenches, Proceedings of NSCM-24: the 24rd Nordic Seminar on Computational Mechanics, Helsinki, 2011.
-  Reinoso E., Wrobel L. C., Power H., “Three-dimensional scattering of seismic waves from topographical structures”, Soil Dynamics and Earthquake Engineering, 16, 41-61, 2005.
-  Richart F. E., Hall Jr. J. R., Woods R. D., Vibrations of soils and foundations, Prentice Hall, Englewood Cliffs, 1970.
-  Sánchez-Sesma F. J., Campillo M., “Topographic effects for incident P, SV and Rayleigh waves”, Tectonophysics, 218, 113-125, 1993.
-  Zhou H., Chen X-F., “A study on the effect of depressed topography on Rayleigh sur-face wave”, Chinese journal of geophysics, 50(4), 1018-1025, 2007.
-  Zienkiewicz O. C., Taylor R. L., The finite element method, volume 1 and 2, MacGraw-Hill, London, 1994.
Persson, P.; Persson, K.; Jørstad, P.; Sandberg, G.; "VIBRATION REDUCTION BY LANDSCAPE SHAPING AT HIGH-TECH FACIL-ITY", p. 1901-1917 . In: In Proceedings of the 10th World Congress on Computational Mechanics [= Blucher Mechanical Engineering Proceedings, v. 1, n. 1].
São Paulo: Blucher,
ISSN 2358-0828, DOI 10.5151/meceng-wccm2012-18588
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