Built-in anchor head embedded-type anchoring pile

Abstract

The invention relates to an inbuilt anchor head embedded-type anchoring pile comprising a hollow anti-slide pile, an anchor head, an anchor cable and a cover plate, wherein the hollow anti-slide pile is a reinforced concrete pile of which the section is a rectangle, the upper part is a hollow body, and the lower part is a solid body; the anchor head is fixed on the inner side of the hollow rear wall of the hollow body, an anchor cable connected with the anchor head passes through the hollow rear wall to be fixed in a stable stratum on the rear side of the hollow anti-slide pile, the anchoragedevice of the anchor head locks one end of the anchor cable passing through the hollow rear wall on the inner side of the hollow rear wall, a steel base plate is arranged between the anchorage deviceand the hollow rear wall, and the outer sides of the anchorage device and the steel base plate are sealed by concrete; the cover plate is a reinforced concrete rectangular plate and is covered on theupper mouth of the hollow body of the hollow anti-slide pile to seal the top of the pile. The invention relates to the arrangement method of the inbuilt anchor head embedded-type anchoring pile, comprising: digging a pile hole, pouring concrete, drilling anchor holes, installing the anchor cable and the anchor head, and sealing the pile top. The anchoring pile of the invention has wide application prospect for treating large soil or rock-soil landslide treatment engineering.

Description

technical field [0001] The invention relates to foundation piles of foundation engineering, in particular to anchor tension anti-slide piles used as anti-sliding retaining structures for strengthening large-scale landslides. Background technique [0002] The anti-slide pile is to use the foundation pile of the foundation project as a support structure to strengthen the landslide. By passing through the landslide body and embedding the piles in the stable strata below the sliding surface, the anti-slide pile supports the sliding force of the landslide body and plays a role in stabilizing the landslide. [0003] figure 1 Shown is an existing monopile anti-slide retaining structure with anti-slide piles inserted directly into the landslide. like figure 1 As shown, the anti-slide pile 5 is a cylindrical or square column pile, which passes through the landslide body 3 and is embedded in the stable formation 1 below the sliding surface 2, and supports the sliding force of the la...

AI Technical Summary

Problems solved by technology

[0007] but, figure 2 In the anti-sliding retaining structure of the anchor-stayed pile shown, the anchor head 6 is set on the front side of the anti-slide pile 5. In order to arrange the anchor head 6 and the anchor cable 7, it is necessary to carry out the soil in front of the pile that can provide a certain amount of anti-sliding force in front of the pile. Partial excavation will affect the overall stability of the landslide treatment project

[0008] At the same time, in order to reduce the excavation of the soil in front of the pile, the anchor heads 6 can only be concentrated near the top of the anchor pile, which affects the distribution of the bending internal force of the anchor pile, and also greatly restricts the number of anchor cables, reducing the skid resistance

Moreover, the anchor head 6 is located near the top of the pile, which increases the total length of the anchor cable, and the long-term prestress loss is relatively large. Due to the relatively long borehole, the difficulty of drilling construction is also increased.

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