Construction technology of inclined supporting piles for soft soil base enclosure

Abstract

The invention discloses a construction process of an inclined supporting pile for a soft soil base enclosure, and belongs to the technical field of pile foundation construction. The construction technology comprises the steps that a high-pressure injection pipe performs oblique hole forming and rotary jet grouting on a foundation soil layer at a certain angle to inject cement paste, the cement paste and undisturbed soil of a foundation are evenly stirred and then obliquely implanted into a supporting steel pipe, the supporting steel pipe is implanted in a segmented mode, a grouting pipe and an exhaust pipe are arranged on the supporting steel pipe, and the grouting pipe and the exhaust pipe are implanted along with the supporting steel pipe at the same time; concrete pouring is conducted on the bottoms of the supporting steel pipes through the grouting pipes on the supporting steel pipes, a fixed soil improvement structure is formed at the bottom ends of the inclined supporting steel pipes and around the bottom ends of the inclined supporting steel pipes, and the soil improvement structure is solidified to form a hard supporting solid structure. The method has the advantages that the construction period of the support is shortened, barrier-free earth cutting and structural construction are achieved, excavation of the support foundation pit is reduced, and the support strength is improved.

Description

Technical field [0001] The present invention relates to a construction process for oblique support piles for soft soil base envelopes in the field of pile foundation construction. Background technique [0002] In the infrastructure project, the construction of the underground foundation is first required for the foundation pit excavation. The extension of the foundation pit excavation will inevitably causon the deformation of the surrounding soil, especially for the foundation pit excavation of the soft soil base. There is a more serious impact. The deformation and collapse of the surrounding soil will seriously endanger the normal use or safety of peripheral construction (structure), in order to avoid this situation in the deep base pit design and construction, the support system will increase the support system to stabilize the safety of the foundation pit. There are three main forms: flat support, slanting and reverse anchor technology. The traditional support technology of de...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, and to provide a perfusion and bottom-expanding support pile that is easy to construct, safe, has strong resistance to upward support of the support pile foundation, reduces engineering cost, and occupies a small foundation pit. The oblique support pile construction technology used for soft soil foundation enclosure solves the technical problems of high cost and inconvenient construction of conventional foundation pit support technology, and ensures the safety and economy of foundation pit construction

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