Cast-in-place pile head steel bar positioning device

Abstract

The utility model discloses a cast-in-place pile head reinforcing steel bar positioning device which comprises two peripheral hoops which are vertically symmetrical and a plurality of stand columns, the stand columns are evenly distributed along the peripheries of the peripheral hoops, the stand columns are fixedly connected between the upper peripheral hoop and the lower peripheral hoop, a plurality of positioning assemblies are arranged on the inner sides of the peripheral hoops, and the positioning assemblies are arranged on the periphery hoops. The multiple positioning assemblies are evenly distributed along inner rings of the peripheral hoops, the positioning assemblies on the upper peripheral hoop and the lower peripheral hoop are vertically aligned, the peripheral hoop located at the lower end is installed at a preset reinforcement cage construction position, and the positioning assemblies correspond to pile head steel bars of a reinforcement cage one to one. And the pile head reinforcing steel bar is positioned in the positioning assembly and is detachably matched with the positioning assembly. According to the utility model, the pile head reinforcement can be reliably positioned, and one-time successful installation of the bearing platform reinforcement cage can be ensured, so that the operation is simplified, and the construction efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cast-in-place pile construction device, especially to a cast-in-place pile head reinforcement positioning device. BACKGROUND

[0002] The cast-in-place pile foundation is a common foundation form in modern construction industry, and all loads transmitted from the upper building structure are borne by the pile top bearing platform and then transmitted to the lower foundation to ensure the safety of the building foundation, which plays an important role in house construction. In order to improve the construction level of building industrialization and reduce on-site operation, the bearing platform reinforcement cage is processed in the factory and then installed on the cast-in-place pile head by hoisting. Before construction, the reinforcement spacing of the cast-in-place pile head and the reinforcement spacing of the bearing platform bottom reinforcement need to be designed in advance to ensure that the cast-in-place pile reinforcement can pass through the gap between the adjacent bottom reinforcement of the bearing platform in the longitudinal and transverse directions during hoisting. However, the pile head reinforcement may be displaced or deformed due to collision during hoisting of the cast-in-place pile reinforcement cage, and the reinforcement spacing of the pile head is not uniform, which leads to inconsistency with the original design drawing, and the bearing platform cannot be installed. Finally, the displaced reinforcement of the cast-in-place pile head can only be manually bent repeatedly until it reaches the original design position. The on-site bending operation of the pile head reinforcement is time-consuming and labor-intensive, and repeated bending of the reinforcement may affect the material properties of the reinforcement. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide a cast-in-place pile head reinforcement positioning device that can reliably position the pile head reinforcement and ensure one-time installation of the bearing platform reinforcement cage, thereby simplifying the operation and improving the construction efficiency.

[0004] To solve the above technical problems, the utility model adopts the following technical scheme.

[0005] A cast-in-place pile head reinforcement positioning device includes two upper and lower symmetrical peripheral hoops and a plurality of columns. The columns are evenly distributed around the peripheral hoops and are fixedly connected between the two peripheral hoops. The inner side of the peripheral hoops is provided with a plurality of positioning components, which are evenly distributed around the inner ring of the peripheral hoops. The positioning components on the two peripheral hoops are arranged in alignment. The peripheral hoop at the lower end is installed at the preset reinforcement cage construction site. The positioning components correspond one-to-one to the pile head reinforcement of the reinforcement cage, and the pile head reinforcement is positioned in the positioning components and can be detachably connected.

[0006] Preferably, the positioning component includes two symmetrically arranged positioning bars, and the pile head reinforcement is positioned between the two positioning bars.

[0007] Preferably, the distance between the two positioning ribs is denoted as H, and the diameter of the pile head steel bar is denoted as L, and H = L + 5mm.

[0008] Preferably, the peripheral hoops, the columns and the positioning ribs are all steel bars, the columns are welded between the upper and lower peripheral hoops, and the positioning ribs are welded to the inner side of the peripheral hoops.

[0009] Preferably, the vertical height of the column is 600mm-800mm.

[0010] Preferably, at least four columns are fixed between the upper and lower peripheral hoops.

[0011] The pouring pile pile head steel bar positioning device provided by the utility model discloses two peripheral hoops which are annular and symmetrical, thereby being matched with the top shape of the pouring pile, a plurality of columns are fixed between the two peripheral hoops, the upper and lower peripheral hoops can be supported and fixed, a plurality of positioning assemblies are uniformly arranged on the inner side of the peripheral hoops, the upper and lower positioning assemblies are symmetrical, so that the upper and lower positioning assemblies can simultaneously position one pile head steel bar, after the pouring pile construction is completed, the pile head steel bar and the positioning assembly are detachably matched, so that the utility model can be easily taken off from the top of the pouring pile, the spacing, position and verticality of a plurality of pile head steel bars can be ensured, and secondary trimming is not needed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is a perspective view of the pouring pile pile head steel bar positioning device of the utility model;

[0013] Fig. 2 It is a structure view of the pouring pile pile head steel bar positioning device of the utility model when being installed on the pouring pile;

[0014] Fig. 3 It is a structure view of the pouring pile after the positioning device is taken off. DETAILED DESCRIPTION

[0015] The utility model will be described in more detail in combination with the drawings and embodiments.

[0016] The utility model discloses a pouring pile pile head steel bar positioning device, please see Figs. 1-3It comprises two upper and lower symmetrical peripheral hoops 1 and a plurality of columns 2, the plurality of columns 2 are uniformly distributed along the periphery of the peripheral hoops 1, the columns 2 are fixedly connected between the upper and lower peripheral hoops 1, the inner side of the peripheral hoops 1 is provided with a plurality of positioning assemblies 3, the plurality of positioning assemblies 3 are uniformly distributed along the inner ring of the peripheral hoops 1, the positioning assemblies 3 on the upper and lower peripheral hoops 1 are arranged in alignment, the peripheral hoop 1 at the lower end is installed at a preset reinforcement cage construction site, the positioning assembly 3 corresponds to the pile head reinforcement 100 of the reinforcement cage one by one, the pile head reinforcement 100 is positioned in the positioning assembly 3 and can be detachably matched.

[0017] In the above structure, the two peripheral hoops 1 are annular and symmetrical up and down, thereby adapting to the shape of the top end of the cast-in-place pile 101, the plurality of columns 2 are fixed between the two peripheral hoops 1, which can support and fix the upper and lower peripheral hoops 1, and a plurality of positioning assemblies 3 are uniformly arranged on the inner side of the peripheral hoops 1, based on the symmetrical relationship between the upper and lower positioning assemblies 3, the upper and lower positioning assemblies 3 can simultaneously position a pile head reinforcement 100, based on the detachable matching relationship between the pile head reinforcement 100 and the positioning assembly 3, the utility model can be easily removed from the top end of the cast-in-place pile 101 after the construction of the cast-in-place pile 101 is completed, while ensuring the spacing, position and perpendicularity construction requirements of a plurality of pile head reinforcements 100, without the need for secondary finishing. Compared with the prior art, the utility model not only reliably positions the pile head reinforcement, but also ensures that the pile cap reinforcement cage is installed successfully at one time, thereby simplifying the operation and effectively improving the construction efficiency.

[0018] For the preferred structure of the positioning assembly 3, please refer to Fig. 1 The positioning assembly 3 comprises two symmetrically arranged positioning ribs 30, and the pile head reinforcement 100 is positioned between the two positioning ribs 30.

[0019] In order to facilitate the detachable matching with the pile head reinforcement 100, in the embodiment, the spacing between the two positioning ribs 30 is slightly greater than the diameter of the pile head reinforcement 100, and for the preferred size parameter, in the embodiment, the spacing between the two positioning ribs 30 is denoted as H, and the diameter of the pile head reinforcement 100 is denoted as L, so H = L + 5mm.

[0020] As a preferred mode, the peripheral hoops 1, the columns 2 and the positioning ribs 30 are all steel bars, the columns 2 are welded between the upper and lower peripheral hoops 1, and the positioning ribs 30 are welded on the inner side of the peripheral hoops 1. In the above structure, the positioning device is supported by steel bars, which can be taken on site, and can improve the construction efficiency and reduce the application cost.

[0021] In order to realize reliable support, in the embodiment, the vertical height of the column 2 is 600mm~800mm. Further, at least four columns 2 are fixed between the upper and lower peripheral hoops 1.

[0022] The pile head reinforcement positioning device for cast-in-place piles disclosed by the utility model is made of steel bars by welding, and is made of on-site materials, comprising a peripheral hoop, positioning bars and columns, wherein the positioning bars are welded on the peripheral hoop by two steel bars with a diameter of 14mm and a length of 50mm, two steel bars form a group, the clear space between the two positioning bars is the diameter of the pile head longitudinal reinforcement + 5mm, the welding interval of the adjacent two groups of positioning bars around the peripheral hoop is determined according to the reinforcement interval of the pile head of the cast-in-place pile, and the height of the column is controlled to be between 600mm and 800mm. Further, before the installation of the reinforcement cage of the cast-in-place pile, the pile head reinforcement positioning device for cast-in-place piles is installed at the position of the pile head reinforcement cage of the cast-in-place pile, the longitudinal reinforcement of the cast-in-place pile is fixed between the two positioning bars, and when the concrete of the pile head of the cast-in-place pile is broken to expose the pile head reinforcement after the over-pouring of the cast-in-place pile, the pile head reinforcement positioning device for cast-in-place piles is removed for circulation, so that the reinforcement interval, position and perpendicularity of the pile head of the cast-in-place pile meet the process requirements, and subsequent construction is facilitated.

[0023] Compared with the prior art, the utility model controls the position of the longitudinal reinforcement of the pile by the positioning bars of the cast-in-place pile, prevents the displacement of the reinforcement in the left-right or front-back direction, connects the upper and lower peripheral hoops and the positioning bars by the columns, guarantees the perpendicularity of the pile head reinforcement, is convenient for the longitudinal and transverse adjacent bottom reinforcement of the cast-in-place pile to pass through the gap between the bottom reinforcement, helps to realize the factory and standardized construction of the reinforcement cage of the foundation pile cap, reduces the on-site operation, and helps to improve the construction speed and construction quality.

[0024] The above is only the preferred embodiment of the utility model, and is not used for limiting the utility model, and any modification, equivalent replacement or improvement made in the technical range of the utility model should be included in the range protected by the utility model.

Claims

1. A device for positioning reinforcing bars at the head of a cast-in-place pile, characterized in that, It includes two symmetrical outer rings (1) and multiple columns (2). The multiple columns (2) are evenly distributed around the outer rings (1). The columns (2) are fixedly connected between the upper and lower outer rings (1). Multiple positioning components (3) are provided on the inner side of the outer rings (1). The multiple positioning components (3) are evenly distributed along the inner ring of the outer rings (1). The positioning components (3) on the upper and lower outer rings (1) are aligned vertically. The outer ring (1) at the lower end is installed at the preset construction position of the steel cage. The positioning components (3) correspond one-to-one with the pile head steel bars (100) of the steel cage. The pile head steel bars (100) are positioned inside the positioning components (3) and the two can be detachably coupled.

2. The pile head reinforcement positioning device as described in claim 1, characterized in that, The positioning component (3) includes two symmetrically arranged positioning bars (30), and the pile head steel bar (100) is positioned between the two positioning bars (30).

3. The pile head reinforcement positioning device as described in claim 2, characterized in that, Let H be the spacing between the two positioning bars (30) and L be the diameter of the pile head bar (100). Then H = L + 5 mm.

4. The pile head reinforcement positioning device as described in claim 2, characterized in that, The outer ring (1), the column (2) and the positioning bar (30) are all steel bars. The column (2) is welded between the upper and lower outer rings (1), and the positioning bar (30) is welded to the inner side of the outer ring (1).

5. The pile head reinforcement positioning device as described in claim 1, characterized in that, The vertical height of the column (2) is 600mm~800mm.

6. The pile head reinforcement positioning device as described in claim 1, characterized in that, At least four columns (2) are fixed between the upper and lower outer rings (1).

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