CN211395654U

CN211395654U - Pile hole collapse-preventing steel reinforcement cage

Info

Publication number: CN211395654U
Application number: CN201921493602.XU
Authority: CN
Inventors: 黄凯; 杨超; 程卫华; 曹冬杰
Original assignee: China MCC20 Group Corp Ltd
Current assignee: China MCC20 Group Corp Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2020-09-01
Anticipated expiration: 2029-09-05

Abstract

The utility model provides a hole steel reinforcement cage that collapses is prevented in stake hole, include: filling a pile reinforcement cage; at least one layer of steel wire mesh, wherein each layer of steel wire mesh is sequentially wrapped outside the cast-in-place pile reinforcement cage; and each iron wire net is wrapped outside the outermost steel wire net from the bottom of the cast-in-place pile reinforcement cage, and the two adjacent iron wire nets are erected and not connected. If the pile hole is collapsed, the steel wire mesh is wrapped outside the reinforcement cage of the cast-in-place pile, so that the invasion of collapsed hole soil bodies and broken stones can be blocked, the friction force between the pile body and the peripheral soil bodies and the wrapping force on the pile body are increased, the consumption of concrete is not increased, the filling coefficient of the pile is reduced, and the method is suitable for dry pouring and wet pouring (concrete replacement slurry) of the cast-in-place pile. The condition that the concrete caused by hole collapse can not be poured before and after the steel reinforcement cage is placed in the pile hole and the collapsed object is filled into the steel reinforcement cage and the pile hole is avoided, the pouring construction quality of the cast-in-situ bored pile can be improved, and the construction period of the pile is shortened.

Description

Pile hole collapse-preventing steel reinforcement cage

Technical Field

The utility model relates to a hole technical field that collapses is prevented in stake hole particularly, relates to a hole steel reinforcement cage that collapses is prevented in stake hole.

Background

After the concrete cast-in-place pile of engineering pore-forming (including impacting pore-forming, digging pore-forming soon, auger pore-forming, drilling pore-forming in forward and reverse circulation, digging pore-forming manually, etc.), dry pore-forming (auger drilling, drilling pore-forming in manual hole digging) and wet pore-forming (impacting pore-forming, digging pore-forming soon, auger pore-forming, drilling pore-forming in forward and reverse circulation) pore-forming, if pile body concrete can not pour in time, the phenomenon of pile hole collapse can generally take place, cause irrecoverable loss for construction progress and quality, construction safety, also increased engineering cost.

At the present stage, especially in pile group construction, due to weather reasons (rainy season), geological reasons (poor soil quality and high underground water level) and disturbance of earth surface soil body, in addition, concrete cannot be poured in time after the hole of the pile foundation engineering is formed, and hole collapse can be caused.

Disclosure of Invention

In view of this, the utility model provides a problem in hole easily takes place to collapse after present pile foundation engineering pore-forming.

The utility model provides a hole steel reinforcement cage that collapses is prevented in stake hole, include: filling a pile reinforcement cage; at least one layer of steel wire mesh, wherein each layer of steel wire mesh is sequentially wrapped outside the cast-in-place pile reinforcement cage; and each iron wire net is wrapped outside the outermost steel wire net from the bottom of the cast-in-place pile reinforcement cage, and the two adjacent iron wire nets are erected and not connected.

Furthermore, in the pile hole collapse prevention reinforcement cage, each layer of steel wire mesh wraps the whole cast-in-place pile reinforcement cage.

Furthermore, in the pile hole collapse prevention reinforcement cage, at least two layers of steel wire meshes are bound on the bottom layer of the cast-in-place pile reinforcement cage.

Furthermore, in the pile hole collapse prevention steel reinforcement cage, the holes of each layer of steel wire mesh are 5-8 mm.

Furthermore, in the pile hole collapse prevention steel reinforcement cage, the erection length of two adjacent wire nets is 30-50 cm.

The utility model discloses in, if the hole that collapses appears in the stake hole, because the wire net parcel can play the invasion of the hole soil body that collapses in the separation, rubble in the bored concrete pile steel reinforcement cage outside, increase frictional force between pile body and the peripheral soil body and to the bond wrap-up force of pile body, and do not increase the concrete volume, reduced the sufficient coefficient of stake, this method adaptation bored concrete pile dry method is pour and is pour with wet process (concrete replacement mud). The conditions that the concrete cannot be poured and collapsed due to hole collapse before and after the steel reinforcement cage is placed in the pile hole and the collapsed object is silted up and buried in the steel reinforcement cage and the pile hole are avoided, and the method is simple and low in manufacturing cost. The method solves the quality problems of incomplete pile body, pile breakage, secondary reworking and the like and the quality defect of the pile hole caused by hole collapse after the hole forming of the engineering pile hole, and mainly can improve the pouring construction quality of the hole-forming cast-in-place pile, shorten the construction period of the pile, improve the economic and social benefits and save the engineering cost.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

fig. 1 is the embodiment of the utility model provides a hole steel reinforcement cage is prevented collapsing in stake hole's structural schematic.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, fig. 1 shows a preferred structure of the pile hole collapse preventing hole reinforcement cage provided by the present embodiment. As shown in fig. 1, the pile hole collapse prevention steel reinforcement cage comprises: the pile comprises a cast-in-place pile reinforcement cage 1, at least one layer of steel wire mesh 2 and a plurality of iron wire meshes 3. The outside parcel of bored concrete pile steel reinforcement cage 1 protective layer cushion has one deck at least wire net 2, and each layer wire net 2 parcel whole bored concrete pile steel reinforcement cage 1, simultaneously, because the hole is collapsed to the pile hole bottom after the pressure is big, so, the bottom ligature of bored concrete pile steel reinforcement cage 1 has two deck at least wire nets 2, and the hole of each layer wire net 2 is 5mm ~ 8 mm. The outer side of the outermost steel wire mesh 2 is wrapped with a plurality of iron wire meshes 3, each iron wire mesh 3 is sequentially erected from the bottom to the top of the cast-in-place pile reinforcement cage 1, and two adjacent iron wire meshes 3 are only erected and are not connected, and the erected length is 30-50 cm.

During construction:

the method comprises the following steps: firstly, a cast-in-place pile reinforcement cage 1 is manufactured, after the manufacture is finished, one or two layers of steel wire meshes 2 are bound on the outer side of a cushion block of a protective layer of the cast-in-place pile reinforcement cage 1, at least two layers of steel wire meshes 2 are bound on the bottom of the cast-in-place pile reinforcement cage 1 due to the fact that the pressure is large after hole collapse at the bottom of a pile hole, and the whole cast-in-place pile reinforcement cage 1 is wrapped by the steel wire. The holes of the steel wire mesh 2 bound at the bottom of the cast-in-place pile steel reinforcement cage 1 and the holes of the steel wire mesh 2 wrapped outside the cast-in-place pile steel reinforcement cage 1 are generally 5-8 mm, the wire netting 3 wrapped on the periphery of the cast-in-place pile steel reinforcement cage 1 is sequentially erected from the bottom to the top of the cast-in-place pile steel reinforcement cage 1, the erection positions of two adjacent wire netting 3 are not subjected to steel wire binding treatment, and the erection length is generally 30-50 cm.

Step two: under the special geology or special weather condition, after the acceptance of pile hole pore-forming is qualified, transfer the hole steel reinforcement cage that prevents collapsing in pile hole at once, accomplish that the construction overlap joint of the process of going up and down is inseparable.

Step three: and after the pile hole collapse-proof hole reinforcement cage is put in place, the concrete of the pile body is poured.

Firstly, if a pile hole is collapsed, the steel wire mesh 2 is wrapped outside the cast-in-place pile reinforcement cage 1, so that invasion of collapsed hole soil bodies and broken stones can be blocked, friction force between a pile body and peripheral soil bodies 4 and wrapping force of the pile body are increased, the consumption of concrete is not increased, pile filling coefficients are reduced, and the method is suitable for dry-method cast and wet-method (concrete replacement slurry) cast of the cast-in-place pile. The conditions that the concrete cannot be poured and collapsed due to hole collapse before and after the steel reinforcement cage is placed in the pile hole and the collapsed object is silted up and buried in the steel reinforcement cage and the pile hole are avoided, and the method is simple and low in manufacturing cost. The method solves the quality problems of incomplete pile body, pile breakage, secondary reworking and the like and the quality defect of the pile hole caused by hole collapse after the hole forming of the engineering pile hole, and mainly can improve the pouring construction quality of the hole-forming cast-in-place pile, shorten the construction period of the pile, improve the economic and social benefits and save the engineering cost.

Secondly, if the pile hole is not collapsed, the concrete can break through the steel wire meshes 2 at the positions where the two steel wire meshes 2 are erected (30-50 cm) in the pile body pouring process, and the gaps between the steel wire meshes 2 and the soil body 4 around the pile hole are filled under the action of self gravity.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a hole steel reinforcement cage that collapses is prevented in stake hole which characterized in that includes:

filling a pile reinforcement cage;

at least one layer of steel wire mesh, wherein each layer of steel wire mesh is sequentially wrapped outside the cast-in-place pile reinforcement cage;

and each iron wire net is wrapped outside the steel wire net on the outermost layer from the bottom of the cast-in-place pile reinforcement cage, and the adjacent two iron wire nets are erected and not connected.

2. The pile hole collapse preventing hole reinforcement cage of claim 1,

and each layer of the steel wire mesh wraps the whole cast-in-place pile reinforcement cage.

3. The pile hole collapse preventing hole reinforcement cage of claim 1,

at least two layers of steel wire meshes are bound at the bottom of the cast-in-place pile reinforcement cage.

4. The pile hole collapse preventing hole reinforcement cage of claim 1,

the eyelets of the steel wire meshes of each layer are 5-8 mm.

5. The pile hole collapse preventing hole reinforcement cage of claim 1,

the length of the two adjacent iron wire nets is 30-50 cm.