APPLICABILITY OF SOLUTIONS FOR TRANSIENT WAVE-INDUCED POREWATER PRESSURES IN SEABED AND LIQUEFACTION CONDITIONS OF SEABED

Autor:	Hajime Mase, Tetsuo Sakai, Katsuya Hatanaka
Rok vydání:	1990
Předmět:	Shear modulus Bulk modulus Consolidation (soil) Biot number Effective stress Liquefaction Geotechnical engineering Surf zone Seabed Geology Physics::Geophysics
Zdroj:	Doboku Gakkai Ronbunshu. 1990:275-283
ISSN:	1882-7187 0289-7806
DOI:	10.2208/jscej.1990.417_275
Popis:	There exist three solutions for the transient wave-induced porewater pressures in seabed, the seepage flow solution, the exact solution and the boundary region approximation solution of Biot's consolidation equations. Applicability of three solutions is shown graphically in terms of non-dimensional parameter for surf zone conditions. One of the important parameters is the ratio of the shear modulus of solid skelton to the effective bulk modulus of porewater. Another is a non-dimensional quantity proportional to the permeability coefficient and the shear modulus. As the former becomes large and the latter becomes small, the seepage flow solution can not be used but the boundary region approximation solution becomes applicable. Under such situation, the possibility of the vertical effective stress of solid skelton being zero under the wave trough increases. The maximum depth of zero stress is about one half of the wave height.
Databáze:	OpenAIRE
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