Stiffening pile with high uplift resistance

Abstract

The invention provides a stiffening pile with high uplift resistance, wherein a reinforcing body is connected with one or more hollow anchoring plates in a pile body, under the function of tensile force, the reinforcing body transfers the tensile force to the anchoring plates, and the uplift resistance is dispersed under the function of the adhesion stress between the cement and the larger contact area between the anchoring plates and the cement pile body, and the squeezing action of the anchoring plates to the cement, so that damage on a cement grouted body or a cement body is avoided. In this way, the uplift resistance of the stiffening pile can be greatly improved, curing time of the cement body and the cement grouted body is shortened, and the aim of shortening construction period, reducing pretension loss and lowering construction costs is realized.

Description

technical field [0001] The invention relates to the technical field of civil engineering, in particular to an uplift pile used in deep foundation pit support and foundation rapid reinforcement and anchoring engineering. Background technique [0002] At present, the pile-anchor structure used in the active support of deep foundation pits and the anti-floating and anti-tilt anti-lift piles of buildings mainly include soil anchors. Anchor rods in this soil layer are generally drilled and grouted to form cement slurry anchors or cement-soil anchors and inserted into anchor bars. Due to the tight construction period, it is necessary to repair the anchor bars in the short maintenance period. Tensioning often causes the grouting body or the anchoring body formed by rotary jet grouting to be damaged by tension and compression. It can be said that during the current curing period of 3 to 7 days, the compressive strength of anchors formed by grouting or jet grouting is generally low,...

AI Technical Summary

Problems solved by technology

[0004] The currently commonly used anchors generally use fully bonded steel strands and an anchor plate as anchors. This kind of anchor can meet the design requirements in a long maintenance period, but when the maintenance time is short, the strength of the anchor is relatively low. When it is low, it is found through the actual measurement of the project that this kind of bolt often has a large displacement phenomenon, especially in the muddy soil, the situation of large deformation is more obvious

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