Preliminary Investigation on Measuring and Modelling the dynamic Wave Velocities for Wet Soils
碩士 === 淡江大學 === 土木工程研究所 === 83 === Effects of the degree of saturation and void ratio on dynamic wave velocities of the wet soils are investigated with both theoretical and experimented studies in this research. Analytical three-phase models are derived f...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
1995
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| Online Access: | http://ndltd.ncl.edu.tw/handle/75782465976789217074 |
| Summary: | 碩士 === 淡江大學 === 土木工程研究所 === 83 === Effects of the degree of saturation and void ratio on dynamic
wave velocities of the wet soils are investigated with both
theoretical and experimented studies in this research.
Analytical three-phase models are derived from the Wood
equation (Wood, 1930) using alternative postulates. Pore
pressure parameters are considered in the two-phase models
which consists of the soil solids and the pore fluid. With
stress/strain homogeneity and strain decomposition or
consistent strain definitions, different models can be derived.
Parametric study is conduced in comparison with the laboratory
result. It is found that the two-phase models in general
provide better solutions than the three-phase models. The
dynamic wave velocity which corresponds to the compressive wave
is very sensitive to the air intrusion when nearly saturated.
The shear wave velocity is indeed less affected by the degree
of saturation. And they are found gradually increased by
increasing the percentage of fine grains in the soils.
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