Disturbance compaction method for natural sedimentary soft clay foundations
A soil foundation and natural technology, which is applied in the reinforcement of natural sedimentary soft soil foundation and the field of high-sensitivity natural sedimentary soft clay foundation disturbance compaction method, which can solve the problems of poor stability of soil structure, instability of structures, and inconspicuous effect of foundation reinforcement. , to achieve the effect of improving reinforcement quality, improving construction efficiency, and reducing soil moisture content
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Embodiment 1
[0020] The soft clay layer of a marine natural sedimentary soft clay foundation is about 10m thick, with an average natural water content of 82%, an average natural void ratio of 2.2, and an average liquid limit water content of 81%. The undisturbed consolidation yield pressure is 60kPa~90kPa, the undrained shear strength of the original sample ranges from 12kPa~30kPa, and the reshaped sample cannot be formed. The undrained shear strength obtained by the falling cone method is 1.4 kPa, and the sensitivity reaches 10~20. Therefore, the natural sedimentary soil foundation of the site is extremely unstable under the action of external loads. Under the influence of the external environment, the soil structure is easily disturbed, and the undrained strength is easily reduced from the original strength to the remodeling strength.
[0021] After research, the rapid disturbance compaction method with the following steps is used for compaction and reinforcement. The plane range of reinf...
Embodiment 2
[0029] Another marine natural sedimentary soft clay foundation, the thickness of the soft clay layer is about 8m, the average natural water content is 97.5%, the average natural void ratio is 2.6, the average liquid limit water content is 84.5%, the undisturbed consolidation yield pressure At 30 kPa to 60 kPa, the undrained shear strength of the original sample varies from 10 kPa to 18 kPa, and the reshaped sample cannot be formed. The undrained shear strength obtained by the falling cone method is 0.8 kPa, and the sensitivity is as high as 20 to 40. Therefore, the natural sedimentary soil foundation of the site is extremely unstable under the action of external loads. Once the disturbance intensity decreases sharply, the soil is completely disturbed into a fluid state.
[0030] Disturbance compaction method is used for compaction reinforcement treatment, and the plane range of reinforcement is 400m×50m.
[0031] Concrete steps are identical with embodiment 1. The difference is...
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