Protective structure and treatment method for side slope overhang body
A protective structure and suspension technology, which is applied in the direction of foundation structure engineering, excavation, sheet pile walls, etc., can solve the problems that large-scale inverted suspensions cannot meet the protection requirements, the damage of inverted suspensions is large, and the problems of falling damage can be achieved. Small safety risk, improve the effect of reinforcement
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Embodiment 1
[0028] Such as figure 1 and figure 2 As shown, the protection structure of a slope overhang body in the present invention includes anchor rods 5 vertically arranged on both sides of the overhang body 2 and penetrating into the parent rock mass 1, and the anchor rods 5 on both sides are located outside the parent rock mass 1. There are steel strands 4 connected between the exposed sections, and the steel strands 4 are tightened and tightly fitted along the outer wall of the waist of the inverted body 2. A belt-ring steel bar 6 is also arranged between adjacent steel strands 4, and also includes The concrete support pier 11 in the cavity 3 of the parent rock mass below the body 2, the inner side of the slope of the cavity 3 of the parent rock mass is equipped with an in-slope anchor 8, the bottom of the cavity 3 of the parent rock mass is equipped with a base anchor 9, and the in-slope anchor 8 and the exposed section of the base anchor rod 9 are all connected to the steel str...
Embodiment 2
[0037] A method for the protection and management of a slope overhang, comprising the following steps: (1) determining anchor hole positions on both sides of the waist of the overhang, installing the anchor, the anchorage section of the anchor passing through the strong unloading boundary line to a certain depth, and the exposed section Reserve enough length to connect with the steel strands. After the construction of the anchors is completed, a tension test should be carried out to ensure that the anchors are installed qualified; The two ends of the steel bars with rings are respectively inserted into two adjacent steel strands; the other end of each steel strand is temporarily fixed with the anchor rods corresponding to the other side of the upside-down body, and the steel strands and the ringed steel bars are adjusted in the upside-down suspension. The position of the waist of the body, by adjusting the steel strands to the best stress-bearing position, and limiting the dist...
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