Anchoring structure and construction method of soil nailing wall supporting structure

Abstract

The invention relates to an anchoring structure and a construction method of a soil nailing wall supporting structure. The anchoring structure comprises an anchor pipe and a plurality of extrusion strips arranged on the outer side of the anchor pipe; the extrusion strips and the anchor pipe are arranged in a sliding mode in the axial direction; the outer wall of the anchor pipe is sunken in the axis direction of the anchor pipe to form a sunken groove; each extrusion strip is divided into two parts in the radial direction of the anchor pipe, wherein one part is named as a matching part, the other part is named as a forming part, the matching part is matched with the sunken groove, and the forming part protrudes out of the outer side of the anchor pipe; and the anchor pipe is further provided with an expansion assembly controlled by the extrusion strips. According to the anchoring structure and the construction method of the soil nailing wall supporting structure, the plurality of extrusion strips are arranged, the anchor pipe serves as a sliding foundation, the inner wall of an anchor hole is extruded and cut, thus, the anchor hole with an irregular section is formed, and the contact area of a soil body and grouting cement is increased; and the connecting strength between the anchor pipe and the soil body is comprehensively enhanced through the extrusion coating force of soil in the anchor hole to the extrusion strips.

Description

technical field [0001] The present application relates to the field of foundation pit support construction, in particular to a construction method for an anchor structure and a soil nail wall support structure. Background technique [0002] The soil nail wall is reinforced by the natural soil through the soil nail wall and combined with the sprayed concrete panel to form a gravity retaining wall to resist the earth pressure behind the wall; thus maintaining the stability of the excavation surface, the soil retaining The wall is called a soil nailed wall. The soil nail wall is set by drilling, inserting bars, and grouting. It is generally called a mortar anchor, and it can also be directly driven into angle steel and thick steel bars to form soil nails. [0003] Conventional soil nail walls are generally composed of soil nails, steel mesh and concrete. During construction, soil nails are first set in the soil on the side wall of the foundation pit, and then the steel mesh is...

AI Technical Summary

Problems solved by technology

[0004] When the soil is relatively hard, it is necessary to introduce the hole first and then insert the soil nail, and then perform grouting, and use the solidified cement slurry as the connecting medium to connect the soil nail and the soil as a whole; The contact area between the inner walls of the borehole is small, so the connection strength between the soil nail and the soil needs to be improved

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