Study on Design of Deep Foundation Pit of Storage Tank under Soft Soil Base
The design scheme of deep foundation pit of storage tank under the soft soil base in Shanghai is mainly introduced,and the influence of foundation pit excavation on the surrounding environment is calculated and analyzed by the finite element method.The excavation depth of the foundation pit is 16.5～18.1 m.The diaphragm wall is used for protection.The horizontal support is used of a one-reinforced concrete support and three-steel support system.The lattice stand column is set in the pit.The calculation results show that the overall stability,anti-overturning stability,anti-uplift stability and anti-confined water stability safety factor of the foundation pit support,and the strength and deformation of enclosing structure all meet the code requirements.The influence analysis on the surrounding environment shows that the internal force and deformation of the surrounding building foundation caused by the foundation pit excavation are within the allowable range of the code.And the construction of the foundation pit will not affect the safety of the surrounding buildings.The design scheme of the foundation pit is safe and fea-sible.
support of deep foundation pitdiaphragm wallinner supportsurroundings around foundation pitfinite element analysissoft soil base
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