Excessive sinking preventing method for construction of open caisson of tapered-bottom and spiral flow type pool

Abstract

The invention provides an excessive sinking preventing method for construction of an open caisson of a tapered-bottom and spiral flow type pool. The method comprises the following steps: arranging locking feet between blade feet at the lower part of the open caisson and the tapered bottom; dividing the pool wall into an upper part and a lower part and respectively constructing; arranging a supporting plate on the outer side of the upper end of the upper wall; arranging a supporting beam at the outer side of the lower end of the upper wall; calculating the specification and size of the locking feet, the supporting beam and the supporting plate, the reinforcing bars and the concrete intensity; constructing the lower wall by the open caisson method; then constructing the locking feet; constructing the supporting beam and the upper wall at the same time; backfilling sand-included stone at the outside of the wall; constructing the supporting plate; excavating the soil from the tapered bottom; constructing the reinforced concrete of the tapered bottom; then constructing a flow stabilizing plate, an inner barrel and a platform. According to the excessive sinking preventing method for the construction of the open caisson of the tapered-bottom and spiral flow type pool, the technology of locking and then dragging is adopted, so that the construction is convenient, the operation is easy, the construction is safe, the time is saved, and the technical problems of excessive sinking, inclining, sudden sinking to cause injury in the construction of the tapered-bottom and spiral flow type pool under the open caisson method can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of construction of a conical bottom swirl pool, in particular to a method for preventing oversinking in the construction of a conical bottom swirl pool caisson. Background technique [0002] The water treatment system of continuous casting and steel rolling in the metallurgical industry needs to be equipped with a swirl pool, which has a large diameter and is buried deep, and is an underground structure that is difficult to construct. The construction of the swirl pool by the caisson method has low construction cost and technical However, when the caisson method is used to construct the cone-bottomed swirl pool, how to ensure that the pool wall does not sink or tilt excessively during the construction of the conical bottom of the swirl pool is the reality. There are problems that technology urgently needs to solve. At present, during the construction of the existing technology, when the caisson sinks to 500...

AI Technical Summary

Problems solved by technology

At present, during the construction of the existing technology, when the caisson sinks to 500mm from the design elevation, the excavation and sinking are stopped, and the final sinking elevation cap is set at a suitable position at the foot of the caisson blade. Generally, at least 8 caps are set, symmetrical When the difference between the caisson and the design elevation is 100mm, the excavation will be stopped again, and the caisson will sink by its own weight to solve technical problems such as excessive sinking or inclination; There are some technical difficulties, because the construction of the conical bottom of the swirling pool still needs to dig down, and there will be over-sinking or sudden-sinking accidents during the digging process; so the construction of this method cannot be reliable in terms of construction quality and production safety. Guarantee

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