Correction method for storage tank foundation

Abstract

The invention discloses a correction method for a storage tank foundation, comprising the steps of (1) arranging a sand cushion on a foundation soil at first; (2) arranging a plurality of annular shaping sand bag layers on the sand cushion, wherein the shaping sand bag layer is formed by sequentially arraying a plurality of sand bags which are filled with sand, a gap between the adjacent sand bags is filled with sand, and the openings of the sand bags stretch out of the outer ring of the sand cushion; (3) continuing to pave the sand cushion; (4) placing the to-be-corrected annular storage tank foundation on the sand cushion and above the shaping sand bag layers; (5) forming an annular sand-excavating ditch at a position corresponding to the opening of each sand bag, on the sand cushion, and enabling the opening of the sand bag to be exposed in the sand-excavating ditch; and (6) in the case that the storage tank foundation is inclined, calculating a sand-taking amount for correction adjustment according to the inclining degree, determining the amount of sand taken out from the plurality of sand bags in the shaping sand bag layers according to the sand-taking amount and a sand-taking position, and controlling the deformation of the storage tank foundation in the allowable range of specifications. Via the method, the storage tank foundation can be rapidly and accurately corrected; and moreover, the construction is simple and the needed expense is low.

Description

Technical field [0001] The invention relates to a method for correcting the foundation of a storage tank. Background technique [0002] The preloading of storage tanks with water is a traditional foundation treatment technology that has been applied since the 1960s. This kind of foundation treatment technology has the advantages of simple construction, good effect, and low investment. However, this method uses the staged filling of water in the storage tank as the load, and implements the loading and preloading of the foundation soil layer to gradually compact the foundation soil. , The soil is gradually consolidated to achieve the purpose of the storage tank foundation deformation and the foundation bearing capacity meeting the requirements. If the loading speed is not well controlled, the foundation soil layer is uneven or the surrounding excavation, precipitation and other factors affect the storage tank The foundation is inclined (including the flat and non-planar inclinatio...

AI Technical Summary

Problems solved by technology

This foundation treatment technology has the advantages of simple construction, good effect, and low investment. However, this method uses graded water filling in the storage tank as the load to implement preloading on the foundation soil layer, so that the foundation soil is gradually compacted. , the soil is gradually consolidated to achieve the purpose of storage tank foundation deformation and foundation bearing capacity meeting the requirements. If the loading speed is not well controlled, the foundation soil layer is uneven, or the surrounding excavation, precipitation and other factors affect the storage tank The foundation is inclined (including the plane slope and non-plane slope of the foundation), so the water-filled preloading method is generally used to treat the foundation, and the corresponding storage tank foundation correction plan must be prepared, so that the storage tank foundation can be corrected when the foundation slope occurs. The basic methods of rectification so far are: pre-pressure rectification method, drainage rectification method, trenching rectification method, jacking adjustment rectification method, these several rectification methods have their own defects, mainly including: the rectification process is longer and the cost is relatively high; These defects have greatly affected the popularization and application of water-filled preloading foundation treatment methods.

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