A rapid subsidence construction device for a pile-anchor press-in caisson

Abstract

The invention discloses a rapid sinking construction device for a pile anchor press-in type sinking well. The well wall of the sinking well is provided with a plurality of vertical through holes in the peripheral direction in a spaced manner. The rapid sinking construction device is characterized by comprising anchor piles, anchor cables and cross-core jacks; the anchor piles are pre-buried in soil directly below the designed elevation of the sinking well to form counter-force ground anchors, the cross-core jacks are arranged above the through holes of the well wall of the sinking well, the anchor cables penetrate through the through holes, the lower end of the anchor cables are connected to the anchor piles, the upper ends of the anchor cables penetrate through the cross-core jacks and are fixed by anchoring nuts. The rapid sinking construction device has the advantages that the anchor piles, the anchor cables and the cross-core jacks form the construction device which provides sinking force for the sinking well, site limitation is avoided, the rapid sinking construction device is suitable for sinking wells of various shapes, the sinking posture of the sinking well can be effectively controlled, additional external force cannot be generated for the sinking well wall, the stress of the sinking well in the sinking process can be uniform and steady, and unsafe situations that thesinking is inclined, sunk suddenly and the like are effectively avoided.

Description

technical field [0001] The invention relates to the technical field of caisson construction, in particular to a rapid sinking construction device for a pile-anchor press-in type caisson. Background technique [0002] The caisson is a construction method for underground engineering and deep-buried foundations. With the development of modern construction technology and construction machinery, the caisson has gradually become a common type of enclosure structure for deep-buried underground structures, and it is economical and reasonable. , Simple structure, easy to guarantee engineering quality and other advantages, it is widely used in underground structures, foundations, foundation pit support and other projects. [0003] The sinking of the caisson mainly relies on its own weight to overcome the frictional resistance between the well wall and the soil and the resistance under the blade foot to sink to the design elevation. The choice of caisson sinking construction method de...

AI Technical Summary

Problems solved by technology

However, the counter force system of the press-in caisson sinking generally requires a large construction site, and has a relatively large adverse effect on the surrounding environment and buildings during the construction process; and its structure is complex, and the caisson construction process changes frequently, making it difficult to It is suitable for fast and stable construction of large caissons; in addition, pressure-bearing "corbels" and prefabricated piles are often used in this type of reaction system, which will generate additional force on the caisson well wall, which is not conducive to the force on the well wall

[0005] Patent CN 104032764 A discloses a "press-in caisson reaction force system". When the caisson is made in sections and sinks, each section of the caisson needs to be poured with a pressure-bearing "corbel" to sink to a preset elevation It is necessary to cut the pressure-bearing "corbel" at the top of the caisson at this section to ensure the subsequent process of caisson sinking. The structural force of the well wall itself

[0006] Patent CN 204112351 U discloses a "sinking auxiliary device for caissons", which uses multiple prefabricated piles, jacks and supports. Corbels will generate additional bending moments on the caisson well wall, which is not conducive to the force on the well wall, and two rows of prefabricated piles are used, occupying the construction site, and have high requirements for the construction site

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