Reinforcement cage for long spiral drilling pressure grouting pile

Abstract

The utility model relates to the technical field of drilling press-grouting piles, and particularly discloses a long spiral drilling press-grouting pile reinforcement cage which comprises main reinforcements, stirrups and reinforcing ribs, the multiple main reinforcements are circumferentially distributed to form a reinforcement cage body, the lower ends of the main reinforcements are bent inwards to form a pile tip, the multiple annular stirrups are welded to the pile tip, the multiple reinforcing ribs are arranged at the pile tip, the reinforcing ribs are integrally in an L shape, and the reinforcing ribs are arranged in the reinforcement cage body. The reinforcing ribs are welded to the welding points of the main ribs and the stirrups, the connecting strength of the stirrups and the main ribs is improved, each reinforcing rib comprises a linear part and an arc-shaped part, the linear parts are linear and welded to the main ribs, the arc-shaped parts are arc-shaped and welded to the stirrups, the structural strength of the reinforcement cage is improved, and the radian of the arc-shaped parts of the reinforcing ribs corresponds to the radian of the stirrups. The L-shaped reinforcing ribs are arranged at the pile tip, so that the connection strength of the stirrups and the main ribs is improved, the stirrups and the main ribs are not easy to separate when a reinforcement cage is lowered, the main ribs are prevented from deviating, and the pile forming quality is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a long spiral drilling pressure grouting pile steel reinforcement cage belongs to long spiral drilling pressure grouting pile technology field. BACKGROUND

[0002] Long spiral drilling pressure grouting pile technology is a kind of pile foundation construction technology commonly used in construction, it is after long spiral drilling machine pore, and the steel reinforcement cage is lowered after the end of drilling, a kind of piling method, can effectively avoid the phenomenon such as hole collapse, necking and broken pile, construction noise is low and soil is less, but due to the influence of the resistance of concrete when the steel reinforcement cage is lowered, the length of pile insertion steel reinforcement cage is generally not more than 20m. The existing steel reinforcement cage is generally welded into main reinforcement and stirrup, and the steel reinforcement cage is subjected to the resistance and friction of concrete when being lowered into concrete, especially the force borne by the pile tip position of steel reinforcement cage is larger than the pile body, and the stirrup welding position of the pile tip position is prone to disconnection, leading to the deviation of main reinforcement, which affects the piling quality. SUMMARY

[0003] In view of the technical problems of the prior art, the utility model provides a long spiral drilling pressure grouting pile steel reinforcement cage, which solves the problem that the stirrup at the pile tip position of the existing pressure grouting pile steel reinforcement cage is prone to disconnection.

[0004] To solve the above problems, the utility model adopts the technical scheme of a long spiral drilling pressure grouting pile steel reinforcement cage, which comprises main reinforcement, stirrup and reinforcing bar, a plurality of main reinforcement is circumferentially distributed to form a steel reinforcement cage main body, the lower end of the main reinforcement is bent inward to form a pile tip, a plurality of annular stirrups is welded at the pile tip, a plurality of reinforcing bars is arranged at the pile tip, the reinforcing bar is L-shaped as a whole, and the reinforcing bar is welded at the welding point of the main reinforcement and the stirrup.

[0005] The beneficial effects of the scheme are that, compared with the prior art, by arranging the L-shaped reinforcing bar at the pile tip, the connection strength of the stirrup and the main reinforcement is improved, and the stirrup and the main reinforcement are not prone to disconnection when the steel reinforcement cage is lowered.

[0006] Further, the reinforcing bar comprises a straight part and an arc part, the straight part is linear and welded with the main reinforcement, and the arc part is circular and welded with the stirrup, so as to improve the structural strength of the steel reinforcement cage.

[0007] Further, the curvature of the arc part of the reinforcing bar corresponds to the curvature of the stirrup, so as to ensure that the reinforcing bar and the stirrup are closely fitted and more firmly welded.

[0008] Further, the reinforcing bar is welded on both sides, and the length of the weld seam is greater than or equal to 5d, where d is the diameter of the reinforcing bar, so as to effectively increase the connection strength.

[0009] Further, the model of the reinforcing bar is the same as that of the main reinforcement. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structural schematic view of the utility model;

[0011] Figure 2 It is Figure 1 The enlarged schematic view of A place of

[0012] Figure 3 It is a reinforcing rib schematic view of the utility model;

[0013] In the drawing: 1 - main rib, 2 - hoop rib, 3 - reinforcing rib, 31 - straight line part, 32 - arc part. DETAILED DESCRIPTION

[0014] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0015] The embodiment is as shown in the accompanying drawings Figures 1 to 3 As shown in the accompanying drawings: a long spiral drilling pressure grouting pile reinforcing cage, including main rib 1, hoop rib 2 and reinforcing rib 3, multiple main ribs 1 are circumferentially distributed to form the main body of the reinforcing cage, the lower end of the main rib 1 is inwardly bent to form a pile tip, multiple annular hoop ribs 2 are welded at the pile tip, and a plurality of reinforcing ribs 3 are arranged at the pile tip, the reinforcing rib 3 is L-shaped as a whole, the reinforcing rib 3 is welded at the welding point of the main rib 1 and the hoop rib 2, the connection strength of the hoop rib 2 and the main rib 1 is improved, and it is ensured that the hoop rib 2 is not easy to separate from the main rib 1 when the reinforcing cage is lowered.

[0016] The reinforcing rib 3 includes a straight line part 31 and an arc part 32, the straight line part 31 is linear and welded with the main rib 1, and the arc part 32 is circular arc-shaped and welded with the hoop rib 2, so as to improve the structural strength of the reinforcing cage; the curvature of the arc part 32 of the reinforcing rib 3 corresponds to the curvature of the hoop rib 2, so as to ensure that the reinforcing rib 3 closely adheres to the hoop rib 2 and is more firm after welding; the reinforcing rib 3 is welded on both sides, and the length of the welding seam is greater than or equal to 5d, wherein d is the diameter of the reinforcing bar, so as to effectively increase the connection strength; the model of the reinforcing rib 3 is the same as that of the main rib 1, the reinforcing bars of the same model are easier to weld, and it is beneficial to improve the connection strength of welding.

[0017] The implementation process is as follows: after the main reinforcement 1 is welded with the hoop reinforcement 2, the reinforcing rib 3 is welded at the welding point of the main reinforcement 1 and the hoop reinforcement 2, the straight part 31 of the reinforcing rib 3 is welded with the main reinforcement 1, the arc part 32 of the reinforcing rib 3 is welded with the hoop reinforcement 2, the double-sided welding mode is adopted, the welding length is greater than or equal to 5d, wherein d is the diameter of the steel bar, the reinforcing rib 3 can also be welded at both sides of the welding point of the main reinforcement 1 and the hoop reinforcement 2, the structure strength is effectively ensured, the hoop reinforcement 2 and the main reinforcement 1 at the pile tip position of the reinforcement cage are prevented from being separated during the process of lowering the reinforcement cage, the reinforcement cage is ensured to be smoothly inserted, and the pile forming quality is improved.

[0018] The above is only the embodiment of the present application, and the specific structure and characteristics of the scheme and other common knowledge are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A long spiral drilling pressure grouting pile reinforcement cage, comprising main reinforcement, stirrup and reinforcement, a plurality of main reinforcement is circumferentially distributed to form a reinforcement cage body, the lower end of the main reinforcement is bent inward to form a pile tip, a plurality of annular stirrups are welded at the pile tip, characterized in that: The pile tip is provided with a plurality of reinforcing ribs, the reinforcing ribs are L-shaped as a whole, and the reinforcing ribs are welded at the welding points of the main rib and the hoop rib.

2. The long auger cast-in-place pile reinforcement cage according to claim 1, characterized in that: The reinforcing rib comprises a straight part and an arc part, the straight part is linear and welded with the main rib, and the arc part is circular and welded with the hoop rib.

3. The long auger cast-in-place pile reinforcement cage according to claim 2, characterized in that: The curvature of the arc part of the reinforcing rib corresponds to the curvature of the hoop rib.

4. The long auger cast-in-place pile reinforcement cage according to claim 1, characterized in that: The reinforcing rib is welded by double-face welding, and the length of the welding seam is greater than or equal to 5d, wherein d is the diameter of the reinforcing rib.

5. The long auger cast-in-place pile reinforcement cage according to claim 1, characterized in that: The model of the reinforcing rib is the same as that of the main rib.

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