Construction method of steel casing for ecological river foundation reinforcement

Abstract

The invention discloses a construction method of a steel casing for ecological river foundation reinforcement. The construction method comprises the following steps that (1), construction preparation is carried out; (2), a positioning base is mounted; (3), a limiting sleeve is mounted; (4), a conical guide hopper is mounted; (5), a limiting abutting piece is mounted; and (6), the steel casing is embedded. The overall structural design is reasonable, embedding construction of the steel casing and positioning coincidence between an auxiliary support and the pile position can be guided through the auxiliary support, it is guaranteed that the center of the steel casing is consistent with the center of the pile position, and the construction quality is improved; and meanwhile, the auxiliary support can limit and restrain the steel casing in the whole embedding construction process of the steel casing, the perpendicularity of the steel casing in the embedding process is guaranteed, so that inclination deviation of the steel casing in the construction process is effectively avoided, the quality of a final pile hole is improved, deformation and collapse of the pile hole are effectively avoided, and the construction safety performance is improved.

Description

technical field [0001] The invention belongs to the technical field of steel casings, and in particular relates to a construction method of steel casings for ecological river foundation reinforcement. Background technique [0002] In the pile foundation reinforcement of the foundation, the steel casing plays a role in positioning and guiding the hole during the drilling process of the pile foundation, preventing the hole from collapsing, and maintaining the groundwater level. In actual operation, the verticality of the steel pipe often deviates during the embedding process, resulting in a deviation between the actual pile hole and the center of the pile position that is greater than the set value, increasing the collapse of the pile hole probability, resulting in certain security risks. Moreover, when the verticality deviation of the steel pipe is large, the drill bit will drill downward under the guidance of the steel casing, which may cause serious adverse effects on the ...

AI Technical Summary

Problems solved by technology

In actual operation, the verticality of the steel pipe often deviates during the embedding process, resulting in a deviation between the actual pile hole and the center of the pile position that is greater than the set value, increasing the collapse of the pile hole probability, causing certain security risks

Moreover, when the verticality deviation of the steel pipe is large, the drill bit will drill downward under the guidance of the steel casing, which may cause serious adverse effects on the verticality of the entire hole and even form a waste hole, increasing the construction cost and construction period.

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