Grouting soil nail for triangularly arranging reinforcing steel bars

Abstract

The invention belongs to a soil retaining technology for digging a soil body and stabilizing slopes and provides a grouting soil nail for triangularly arranging reinforcing steel bars. The soil nail comprises reinforcing steel bars and neat cement paste bodies wrapped outside the reinforcing steel bars, wherein the reinforcing steel bars comprise main reinforcing steel bars and auxiliary reinforcing steel bars; the main reinforcing steel bars are triangularly distributed on the section of the soil nail; and the auxiliary reinforcing steel bars are enclosed into a triangle, sleeved and fixed on the main reinforcing steel bars and arranged along the length direction of the soil nail. The soil nail with a certain bending resistance has better safe stability for retaining soil. The reinforcing steel bars are triangularly arranged so as to save materials under the condition of the same weight; meanwhile, support slopes of the soil nail can be prevented from quickly collapsing and the stability of the support slopes of the soil nail can be improved; and the time and condition are created for safety evacuation and engineering emergency.

Description

technical field [0001] The invention belongs to a soil retaining technology used for soil excavation and side slope stability, in particular to a grouting soil nail in the soil retaining technology. Background technique [0002] The use of soil nailing technology in civil construction has been quite popular. Soil nailing is one of the soil retaining technologies used for soil excavation and slope stability. Soil nailing is placed in the in-situ soil to Slender rods arranged at relatively close intervals, such as steel bars, angle steel or steel pipes, etc., and cement paste (cement mortar, fine stone concrete) wrapped outside the steel bars are called grouting soil nails. At present, grouting soil nails are the most commonly used in soil excavation and slope stabilization. The structure of the grouting soil nails is: a circular cross-section with a steel bar built in the center. Grouting soil nailing is to first form a hole in the in-situ soil (manual digging or mechanical ...

AI Technical Summary

Problems solved by technology

From the example analysis of many soil nails supporting slope collapses implemented on the spot, the main deficiencies and defects of the existing soil nail structure are: because the whole soil nail body is composed of a steel bar built in the center and cement paste Body (cement mortar, fine stone concrete) composition

There is one steel bar, which is built in the center; from the force analysis of the beam, the existing soil nails do not have the ability to resist bending. The cement paste (cement mortar, fine stone concrete) peels off from the steel bar

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