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- W2334382309 abstract "Instability of pit bottom easily occurs during excavation of deep foundation pit in soft soil areas, and the dewatering method is usually adopted in the excavation. Based on the gray clay in layer 5-1 and the gray clayey silt in layer 5-2, which are widely distributed at the bottom of deep foundation pit in Shanghai, the two-stage consolidation method and the triaxial shear test are used to study the influence of foundation pit dewatering on shear strength and deformation of the soil of the pit bottom. The test results indicate that the cohesion of the soil at the pit bottom increases with the drawdown, while the friction angle of the soil tends to decrease with the drawdown, and the cohesions of the layer 5-1 soil and the layer 5-2 soil increase about 18% and 11%, respectively, per drawdown. The stress-strain curves show the characteristics of strain hardening for the layer 5-1 soil. When the soil is destroyed, the deviator stress increases with the drawdown, but the stress-strain curves show the characteristics of strain-hardening-softening for the soil in the layer 5-2. When the soil is destroyed, the deviator stress decreases with the drawdown. The vertical consolidation deformation and the strain of the pit bottom soil are primarily related to the water discharge and the drawdown." @default.
- W2334382309 created "2016-06-24" @default.
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- W2334382309 date "2014-05-05" @default.
- W2334382309 modified "2023-09-26" @default.
- W2334382309 title "Experimental Study on the Influence of Foundation Pit Dewatering on Shear Strength and Deformation of Pit Bottom Soil in Soft Soil Area" @default.
- W2334382309 doi "https://doi.org/10.1061/9780784413388.040" @default.
- W2334382309 hasPublicationYear "2014" @default.
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