Detent-type soil anchor rod and application thereof

Abstract

The invention discloses a detent-type soil anchor rod and application thereof. The detent-type soil anchor rod comprises a steel pipe, wherein external threads are arranged on the outer end portion of the steel pipe, and a stop-grouting plug, a tray and a nut are arranged. The detent-type soil anchor rod is characterized in that grouting holes are formed in the steel pipe every a certain distance, steel wire detents are arranged on steel pipe walls among the grouting holes, and a tapered closing cap is arranged at the front end of the steel pipe. Due to the facts that the steel wire detents are arranged at intervals and have certain elastic tension, then steel wire detents can only advance and cannot quit when the steel wire detents enter a soil layer, and pulling prevention capacity of the anchor rod is greatly increased; the arranged grouting holes enable grout to outflow from each section of the anchor rod to permeate soil mass and fill gaps disturbed by detents, an anchor rod section of a step-shaped and with a variable diameter can be formed after grouting, and binding force of the anchor rod and the soil layer is greatly improved; because of the arranged tapered closing cap, front end resistance is reduced, holes do not need to be formed in a side slope soil layer with loose soil textures and the holes cannot be formed in the side slope soil layer neither, and construction is convenient to achieve.

Description

technical field [0001] The invention relates to a soil layer anchor rod used for soil layer slope or foundation pit engineering reinforcement. Background technique [0002] The soil anchor is referred to as the soil anchor, which is to drill a hole at a certain depth in the soil wall of the slope or foundation pit to be reinforced, put steel bars, steel pipes, steel wire bundles, steel strands and other materials into the holes, and pour mud or Chemical grout makes it integrated with the soil layer to achieve the effect of strengthening the soil. Due to the advantages of low cost, good reinforcement effect and convenient construction compared with other reinforcement methods, it is widely used in various soil layer reinforcement projects such as soil slopes, foundation pit support, retaining walls, underground diaphragm walls, and bridge foundation reinforcement. Among them, it shows strong vitality in the reinforcement of unfavorable formations, and its consumption has an ...

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Problems solved by technology

[0003] However, due to the simple structure of the currently used soil anchors, when the strength of the soil layer is weak (such as quicksand layer, silt layer, pebble layer and some miscellaneous filling soil layers), it is difficult to form holes in the anchor rod construction, and the soil anchor rod The bonding force between the anchor body and the soil layer is low, and the pull-out capacity is low, so it is difficult to achieve the expected effect

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