CN216948240U - Middle chiseling retaining wall structure for defected cast-in-place pile - Google Patents

Abstract

The utility model relates to the technical field of cast-in-place piles, and discloses a dado chiseling structure in the middle of a defective cast-in-place pile, which is characterized in that the defective cast-in-place pile is provided with a concrete cast-in-place pile body, wherein the pile body is internally provided with an original reinforcement cage, the pile body is internally provided with a plurality of engaging holes, and the plurality of engaging holes are sequentially engaged and arranged in a surrounding manner to form an annular groove in a surrounding area of the original reinforcement cage; the annular groove divides the pile body into a pile ring and a pile core, and the original steel reinforcement cage is positioned in the pile ring; according to the structure for chiseling the retaining wall in the middle of the defective cast-in-place pile, when the pile core is chiseled, the pile ring is used as the retaining wall, and the formed pile ring is used as the retaining wall no matter the defective position is located at the middle section or the bottom end of the pile body, so that the influence of bad strata and underground water in a field is effectively isolated, and the smooth hole forming construction of the pile-in-pile can be ensured.

Description

Middle chiseling retaining wall structure for defected cast-in-place pile

Technical Field

The utility model relates to the technical field of cast-in-place piles, in particular to a middle chiseling retaining wall structure of a defected cast-in-place pile.

Background

In the process of pouring pile foundation engineering into a pile, due to the influences of complex stratum conditions, improper working procedure operation or abnormal concrete materials and the like, common quality problems of pile body concrete dispersion, pile breakage, excessive pile bottom sediment thickness and the like can occur to a certain degree.

When the cast-in-place pile is detected and judged as a defective cast-in-place pile, the common method is to reinforce by grouting, or to construct again on the original cast-in-place pile, or to adopt methods such as pile re-filling and the like for processing. However, when the defect position of the defective cast-in-place pile is buried deeply or the defect section is large, the grouting reinforcement method is difficult to effectively ensure the treatment quality, and has the problems of long secondary inspection and maintenance time and the like; if reworking is carried out on the original pile position again, because the concrete strength is high and the content of the reinforcing steel bars is large, the construction in the pile forming process is long in time consumption and high in cost, and because the pile foundation bearing platform is chiseled, the large-scale pile machine is difficult to enter the field and is greatly limited by the construction field; and adopt the scheme of mending the stake again, replace former stake with two or many symmetrical stakes, need increase foundation pile cushion cap, the construction progress is slow, pile body maintenance and quality detection cycle are long, and the total treatment cost is high.

In the prior art, the middle part of a pile body is usually chiseled until the middle part is chiseled to a defect position, and then concrete is poured after the defect position is well treated.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a retaining wall chiseling structure for the middle part of a defected cast-in-place pile, and aims to solve the problem that in the prior art, a retaining wall structure does not exist in the chiseling process of a pile body of the defected cast-in-place pile.

The method is realized by chiseling a retaining wall structure at the middle part of a defect cast-in-place pile, wherein the defect cast-in-place pile is provided with a concrete cast-in-place pile body, an original reinforcement cage is arranged in the pile body, a plurality of occlusion holes are arranged in the pile body in an occlusion and surrounding manner in sequence, and an annular groove located in the surrounding area of the original reinforcement cage is formed; the annular groove divides the pile body into a pile ring and a pile core, and the original reinforcement cage is positioned in the pile ring.

Further, the inner side wall of the annular groove comprises a plurality of inner annular walls which are circumferentially arranged along the circumferential direction of the annular groove; along the top-down direction of ring channel, a plurality of interior rampart dock from top to bottom in proper order, interior rampart deviates from ring channel outwards slope and arranges.

Further, the inclination angle of the inner annular wall ranges from 10 ° to 20 °.

Further, the inclination angle of the inner annular wall is 15 °.

Further, the inner annular wall is formed with an upwardly disposed support wall circumferentially disposed along the annular groove.

Further, the support wall is formed at the bottom of the inner annular wall.

Further, the supporting wall is arranged horizontally.

Furthermore, the pile core is provided with a blank facing surface facing the annular groove, dividing holes are drilled in the pile core, and the dividing holes are sequentially arranged in a meshed mode to form the dividing grooves in a crossed mode.

Further, the end part of the separation groove penetrates through the empty face of the pile core to divide the pile core into four core blocks which are arranged in a surrounding mode.

Further, the center of the separation groove is coincident with the center of the pile core.

Compared with the prior art, the retaining wall chiseling structure for the middle part of the defective cast-in-place pile has the advantages that when the pile core is chiseled, the pile ring serves as the retaining wall, the formed pile ring serves as the retaining wall no matter the defective position is located at the middle section or the bottom end of the pile body, the influence of bad strata and underground water in a field is effectively isolated, and the 'pile-in-pile' can be guaranteed to be successfully formed into a hole for construction.

Drawings

FIG. 1 is a schematic top view of a pile body provided with an annular groove according to the present invention;

fig. 2 is a schematic front view of a middle chiseled retaining wall structure of a defected cast-in-place pile according to the present invention;

fig. 3 is an enlarged schematic view at a in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.

The following describes the implementation of the present invention in detail with reference to specific embodiments.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms may be understood by those skilled in the art according to specific circumstances.

Referring to fig. 1-3, preferred embodiments of the present invention are shown.

Chiseling out a retaining wall structure in the middle of a defective cast-in-place pile, wherein the defective cast-in-place pile is provided with a concrete cast-in-place pile body, and an original reinforcement cage 104 is arranged in the pile body; a plurality of engaging holes are formed in the pile body, and are sequentially engaged and arranged in a surrounding manner to form an annular groove 102 in the surrounding area of the original reinforcement cage 104; the annular groove 102 divides the pile shaft into a pile ring 100 and a pile core 101, and the original reinforcement cage 104 is positioned in the pile ring 100.

According to the structure for chiseling the retaining wall in the middle of the defective cast-in-place pile, when the pile core 101 is chiseled, the pile ring 100 serves as the retaining wall, the formed pile ring 100 serves as the retaining wall no matter the defective position is located at the middle section or the bottom end of the pile body, the influence of bad ground layers and underground water in a site is effectively isolated, and smooth hole forming construction of the pile-in-pile can be guaranteed.

The inner side wall of the annular groove 102 comprises a plurality of inner annular walls 106, and the inner annular walls 106 are circumferentially arranged along the circumference of the annular groove 102; along the top-down direction of the annular groove 102, the plurality of inner annular walls 106 are sequentially butted up and down, and the inner annular walls 106 are obliquely arranged outwards away from the annular groove 102, so that the annular groove 102 can be drilled conveniently.

In actual construction, when the water mill drill drills, the drill cylinder inclines outwards for about 15 degrees towards the outer side wall, so that the drill pulling points in the same direction can be always kept on the same vertical line when the water mill drill performs subsequent construction on each layer, and shrinkage cavities cannot be caused.

The inclination angle of the inner annular wall ranges from 10 ° to 20 °, and in this embodiment, the inclination angle of the inner annular wall is 15 °.

The inner annular wall 106 is formed with an upwardly disposed support wall 107, and the support wall 107 is circumferentially disposed along the circumferential direction of the annular groove 102. During the subsequent process of binding a new reinforcement cage, the new stirrup may press against the support wall 107.

In the present embodiment, the supporting wall 107 is formed at the bottom of the inner annular wall 106, and as a preferred embodiment, the supporting wall 107 is horizontally disposed.

The pile core 101 is provided with a free face facing the annular groove 102, a plurality of partition holes are drilled on the pile core 101 and are sequentially arranged in a meshing manner to form partition grooves 103 which are arranged in a crossed manner, so that the pile core 101 is convenient to chisel.

The end of the separation groove 103 penetrates through the free face of the pile core 101 to divide the pile core 101 into four core blocks which are arranged in a surrounding manner, so that the separation of the pile core 101 is convenient to chisel in the subsequent construction.

In this embodiment, the center of separation groove 103 coincides with the center of pile core 101.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The method is characterized in that the defected cast-in-place pile is provided with a pile body poured by concrete, an original reinforcement cage is arranged in the pile body, a plurality of engaging holes are formed in the pile body, and the engaging holes are sequentially engaged and arranged in a surrounding mode to form an annular groove in an area surrounded by the original reinforcement cage; the annular groove divides the pile body into a pile ring and a pile core, and the original reinforcement cage is positioned in the pile ring.

2. The middle chiseled retaining wall structure of a defected cast-in-place pile as defined in claim 1, wherein the inner side wall of said annular groove includes a plurality of inner annular walls circumferentially arranged along the annular groove; along the top-down direction of ring channel, a plurality of interior rampart dock from top to bottom in proper order, interior rampart deviates from ring channel outwards slope and arranges.

3. The mid-chiseled retaining wall structure of a defected cast-in-place pile of claim 2, wherein the angle of inclination of the inner annular wall is in the range of 10 ° to 20 °.

4. The mid-chiseled retaining wall structure of a defected cast-in-place pile according to claim 3, wherein the angle of inclination of the inner annular wall is 15 °.

5. The middle chiseled retaining wall structure of a defected cast-in-place pile according to claim 2, wherein the inner annular wall is formed with upwardly disposed support walls circumferentially disposed around the annular groove.

6. The middle chiseled retaining wall structure of a defected cast-in-place pile according to claim 5, wherein said supporting wall is formed at the bottom of the inner circumferential wall.

7. A partially excavated retaining wall structure of a defected cast-in-place pile as claimed in claim 6, wherein the supporting wall is horizontally arranged.

8. The middle chiseled retaining wall structure of a defected cast-in-place pile according to claim 1 or 2, wherein the pile core has a blank surface facing the annular groove, a plurality of dividing holes are drilled on the pile core and are arranged in a sequential meshing manner to form the dividing grooves arranged in a cross manner.

9. The defected cast-in-place pile mid-chiseling retaining wall structure as claimed in claim 8, wherein the end of the separation groove penetrates through the free face of the pile core to divide the pile core into four core blocks arranged around.

10. The defected cast-in-place pile mid-chiseled retaining wall structure of claim 8, wherein the center of the separation channel coincides with the center of the pile core.

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