Analyses of the seismic responses of soil layers with deep deposits |
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Authors: | Lou Menglin Li Yuchun and Li Nansheng |
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Affiliation: | (1) State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai, 200092, China;(2) Department of Building Engineering, Tongji University, Shanghai, 200092, China |
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Abstract: | Several typical problems in the seismic response analysis of soil layers with deep deposits have been studied according to
the seismic response analysis of the soil layer in the Shanghai region. The problems include the effect of the inclination
of the bedrock under the soil layer on the seismic responses of the soil layer, the rationality of the artificial horizontal
bedrock boundary in the soil layer, and the effect of the wave velocity of the bedrock and dynamic characteristics of the
soil media on the seismic responses of the soil layer. Some results are obtained by numerical analysis. In the seismic response
analysis, the effect of angle of inclination of the rock surface under the soil layer can be neglected if the angle is not
more than two degrees. A significant error will be introduced in the calculation when the artificial horizontal rock surface
is assumed in the soil layer according to the shear velocity of the soil media. The elasticity of the solid rock has little
influence on the seismic response of the deep soil layer. The field investigation on the soil dynamic property should be paid
more attention to.
Translated from Journal of Tongji University (Natural Science), 2006, 34(4): 423–427 译自: 同济大学学报(自然科学版)] |
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Keywords: | soil layer with deep deposit seismic response numerical analysis |
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