000011511 001__ 11511
000011511 005__ 20141205155918.0
000011511 04107 $$aeng
000011511 046__ $$k2008-10-12
000011511 100__ $$aSaitoh, Shouji
000011511 24500 $$aA Method of Estimation of Elastic Properties and Thicknesses of Soil Layers Using Vertical Harmonic Loading on Ground Surface and Its Numerical Verification

000011511 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011511 260__ $$b
000011511 506__ $$arestricted
000011511 520__ $$2eng$$aThis paper presents a new method that may achieve a more accurate and lower cost estimation of elastic properties and thicknesses of soil deposits. The kernel of the proposed method, being independent of the usually adopted assumption that only one Rayleigh wave mode is dominant, is to use the near field characteristics of all types of P-SV wave motions on the surface of elastic multi-layered half space generated by the vertical harmonic load applied on its surface. The near field wave motions are accurately simulated by the stiffness matrix method as one of more powerful numerical solutions, and then the following two physical quantities, which can be observable in the field, are used in inversion analysis: (1) the predominant frequency for which the dynamic vertical displacement on the soil surface takes a maximum value, and (2) the frequency variation of the phase velocity at a point on the soil surface near the vertical harmonic load. The phase velocity used in the proposed method is a local quantity varying with the location from the vertical load, because of using all types of waves and their modes. To demonstrate the capability and reliability of the proposed method, the numerical examples are presented by using regular and irregular soil profiles.

000011511 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011511 653__ $$aestimation of layered soil deposit, vertical harmonic load, elastic wave propagation, phase velocity, non destructive testing, Rayleigh wave, SASW

000011511 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011511 720__ $$aSaitoh, Shouji$$iHarada, Takanori$$iWang, Hongze$$iMori, Genji$$iYamashita, Norihiko
000011511 8560_ $$ffischerc@itam.cas.cz
000011511 8564_ $$s2438199$$uhttps://invenio.itam.cas.cz/record/11511/files/04-01-0023.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 04-01-0023.
000011511 962__ $$r9324
000011511 980__ $$aPAPER