CN110984169A

CN110984169A - Protective net used between cast-in-place pile piles and installation method thereof

Info

Publication number: CN110984169A
Application number: CN201911105794.7A
Authority: CN
Inventors: 高燕飞; 张生雨
Original assignee: MCC Tiangong Group Corp Ltd
Current assignee: MCC Tiangong Group Corp Ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-04-10

Abstract

The invention provides a protective net used between cast-in-place piles, which comprises a plurality of battens, a plurality of S-shaped drag hooks and a geogrid, wherein the battens are uniformly distributed on the outer circumference of a cast-in-place concrete pile and are fixed on a spiral hoop of a reinforcement cage of the cast-in-place pile; the geogrid is arranged between the adjacent concrete cast-in-place piles; the geogrid is fixedly connected with the adjacent concrete cast-in-place pile through the S-shaped draw hook. The invention also provides an installation method for the protective net among the cast-in-place piles, which comprises the steps of firstly fixing the wood bars on the spiral hoops of the cast-in-place pile reinforcement cage; the battens are bound firmly in the longitudinal and transverse directions by binding wires; next, earth excavation is carried out, and the leaked grooves and the reinforcement cage stirrups of the cast-in-place piles are chiseled away by the battens; and finally, the reinforcement cage stirrups and the geogrids are firmly bound by utilizing the S-shaped draw hooks. The structure is simple, the size of the protective net can be flexibly adjusted according to the size among the cast-in-place piles, the adaptability is strong, and the stress is reasonable, so that the potential safety hazard is reduced.

Description

Protective net used between cast-in-place pile piles and installation method thereof

Technical Field

The invention belongs to the field of protection construction among piles of building foundation pit supporting engineering, and relates to a cast-in-place pile protection net convenient for constructors to quickly install and construct.

Background

Along with the continuous development and construction of urban high-rise buildings, underground traffic engineering and the like, urban underground spaces are developed and utilized on a large scale, and special conditions of some projects restrict the construction of a foundation pit supporting and enclosing structure. After excavation of foundation pit earthwork is completed, the side slope is protected by adopting measures of planting ribs among cast-in-place piles, binding reinforcing mesh sheets and then spraying slurry, and the side slope of the foundation pit and the soil among the piles are washed away to influence a supporting structure in areas with abundant underground water or rainy and snowy weather. A measure of rapid net hanging and guniting is adopted to protect a foundation pit supporting structure in the deep foundation pit construction process, so that smooth construction of the main structure of the underground chamber part can be ensured, the manufacturing cost can be reduced, and the construction period can be shortened.

Disclosure of Invention

In order to solve the technical problems, the invention provides a protective net used among cast-in-place piles and an installation method thereof.

The technical scheme adopted by the invention is as follows:

a protective net used between cast-in-place piles comprises a plurality of battens, a plurality of S-shaped drag hooks and a geogrid, wherein the battens are uniformly distributed on the outer circumference of a cast-in-place concrete pile and fixed on a spiral hoop of a reinforcement cage of the cast-in-place pile; the geogrid is arranged between the adjacent concrete cast-in-place piles; the geogrid is fixedly connected with the adjacent concrete cast-in-place pile through the S-shaped draw hook;

furthermore, one end of the S-shaped draw hook is fixedly connected to the spiral hoop of the cast-in-place pile reinforcement cage, and the other end of the S-shaped draw hook is fixedly connected with the geogrid;

furthermore, the spiral hoop of the bored concrete pile steel reinforcement cage fixedly connected to one end of the S-shaped drag hook and the spiral hoop of the bored concrete pile steel reinforcement cage fixed by the batten are the same spiral hoop.

Further, the geogrid comprises a plurality of transverse steel bars and a plurality of longitudinal steel bars, and the transverse steel bars and the longitudinal steel bars are welded in a staggered mode.

Further, the transverse reinforcing steel bars and the longitudinal reinforcing steel bars are located on the same plane.

Further, the end face of the wood strip is rectangular or circular.

In order to achieve the above object, the present invention further provides a method for installing a protective net between cast-in-place pile piles, which includes welding the cast-in-place pile reinforcement cage, and fixing the battens to the spiral hoops of the cast-in-place pile reinforcement cage; then, the battens are bound firmly in the longitudinal and transverse directions by binding wires, and two adjacent battens are bound at the same height position; then earth excavation is carried out, the wood strips are leaked out, and the leaked grooves and the reinforcement cage stirrups of the cast-in-place pile are chiseled off by the wood strips; the reinforcement cage stirrups and the geogrids are firmly bound by the S-shaped drag hooks to form the protective net between the cast-in-place pile piles; and finally, after the protective net among the cast-in-place piles is firmly installed and fixed, carrying out guniting and wall protection construction.

The invention has the advantages and positive effects that: due to the adoption of the technical scheme, the structure is reliable, and the safety is high. The device abandons the mode of using the bar planting transverse connection, connects the building grille through two rows of S-shaped drag hooks on the side of the adjacent pile body, and the S-shaped drag hook between the adjacent upper and lower piles is fastened with the building grille, so that the safety of the guniting dado is ensured. The civil grille can be connected by two rows of S-shaped draw hooks on the side surfaces of adjacent pile bodies between the piles so as to meet the requirements of guniting retaining walls at various pile intervals, and the adaptability is high. Compared with the traditional method, the construction quality is easier to guarantee, the investment of personnel and materials is reduced, the labor efficiency is improved, and the construction progress is accelerated.

Drawings

FIG. 1 is a top view of an embodiment of the present invention;

FIG. 2 is a plan view of a structure of an embodiment of the present invention

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Next, each commodity type or technical terms such as "first", "second", "upper", "lower", "left", "right", "front", "rear", "far", "near", etc. mentioned in the present invention are technical terms that have been already clearly known in the art and some positional or spatial definitions for convenience of describing the embodiments, and are not limiting to the present invention, so they are not explained too much.

Example 1

As shown in fig. 1-2, a protective net used between cast-in-place piles comprises a plurality of battens 1, a plurality of S-shaped drag hooks 2 and a geogrid 3, and is characterized in that the battens 1 are uniformly distributed on the outer circumference of a cast-in-place concrete pile 4, and the battens 1 are fixed on spiral hoops of a reinforcement cage of the cast-in-place pile; a geogrid 3 is arranged between adjacent concrete cast-in-place piles 4; the geogrid 3 is fixedly connected with the adjacent concrete cast-in-place pile 4 through an S-shaped draw hook 2;

furthermore, one end of the S-shaped draw hook 2 is fixedly connected to the spiral hoop of the reinforcement cage of the cast-in-place pile 4, and the other end of the S-shaped draw hook is fixedly connected with the geogrid 3;

furthermore, the spiral hoop of the reinforcement cage of the cast-in-place pile 4 fixedly connected with one end of the S-shaped drag hook 2 and the spiral hoop of the reinforcement cage of the cast-in-place pile fixed by the batten 1 are the same spiral hoop.

After the welding of the filling pile reinforcement cage is finished, fixing the wood strip 1 on the reinforcement cage spiral hoop; the batten 1 is rectangular batten, and the size is controlled within 60mm-120 mm. The batten 1 is bound firmly in the longitudinal and transverse directions by binding wires; the distance between the first reinforcing rib at the top of the pile and the bottom of the foundation pit is calculated according to a drawing, one batten 1 is installed and positioned at intervals of a certain distance (about 1m-1.5 m), two adjacent cast-in-place pile battens 1 are bound at the same height position, and the longitudinal and transverse distances of the battens in the reinforcement cage are kept consistent. After the construction of the concrete cast-in-place pile is completed and the design strength is reached, earthwork excavation is carried out, the battens 1 are leaked, the leaked grooves and cast-in-place pile reinforcement cage stirrups are chiseled off by the aid of tools for the battens 1, S-shaped drag hook hanging rings 2 are manufactured, two rows of S-shaped drag hooks 2 on the side faces of adjacent pile bodies are utilized to connect the reinforcement cage stirrups with a civil grating 3 and are bound firmly, a protective net between the cast-in-place piles is formed, and then guniting wall protection construction is carried.

Example 2

A protective net used between cast-in-place piles comprises a plurality of battens 1, a plurality of S-shaped drag hooks 2 and a geogrid 3, and is characterized in that the battens 1 are uniformly distributed on the outer circumference of a cast-in-place concrete pile 4, and the battens 1 are fixed on a spiral hoop of a reinforcement cage of the cast-in-place pile; a geogrid 3 is arranged between adjacent concrete cast-in-place piles 4; the geogrid 3 is fixedly connected with the adjacent concrete cast-in-place pile 4 through an S-shaped draw hook fixing 2.

The following describes a method for installing a protective net between cast-in-place piles according to the present invention with reference to specific examples.

1. After the welding of the filling pile reinforcement cage is finished, fixing the wood strip 1 on the reinforcement cage spiral hoop; the batten 1 is rectangular batten, and the size is controlled within 60mm-120 mm.

2. The batten 1 is bound firmly in the longitudinal and transverse directions by binding wires; the distance between the first reinforcing rib at the top of the pile and the bottom of the foundation pit is calculated according to a drawing, one batten 1 is installed and positioned at intervals of a certain distance (about 1m-1.5 m), two adjacent cast-in-place pile battens 1 are bound at the same height position, and the longitudinal and transverse distances of the battens in the reinforcement cage are kept consistent.

3. After the construction of the concrete cast-in-place pile is completed and the design strength is reached, earth excavation is carried out, the wood strips 1 are leaked, and the leaked grooves and the cast-in-place pile reinforcement cage stirrups are chiseled off by using tools for the wood strips 1.

4. Manufacturing S-shaped drag hook hoisting rings 2, connecting reinforcement cage stirrups and a civil grille 3 by utilizing two rows of S-shaped drag hooks 2 on the side surfaces of adjacent pile bodies, binding firmly to form a protective net between cast-in-place pile piles, and then carrying out guniting wall protection construction.

The embodiments of the present invention have been described in detail, but the description is only for the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims

1. A protective net used between cast-in-place piles comprises a plurality of battens, a plurality of S-shaped drag hooks and a geogrid, and is characterized in that the battens are uniformly distributed on the outer circumference of a cast-in-place concrete pile and fixed on a spiral hoop of a reinforcement cage of the cast-in-place pile; the geogrid is arranged between the adjacent concrete cast-in-place piles; the geogrid is fixedly connected with the adjacent concrete cast-in-place pile through the S-shaped draw hook.

2. The protective netting for the bored pile according to claim 1, wherein the S-shaped hooks are fixedly connected to the spiral hoops of the bored pile reinforcement cage at one end and fixedly connected to the geogrid at the other end.

3. The protective netting for cast-in-place pile of claim 2, wherein the spiral hoops of the cast-in-place pile cage fixedly connected to one end of the S-shaped hooks are the same spiral hoop as the spiral hoop of the batten-fixed cast-in-place pile cage.

4. The inter-pile protection net for cast-in-place piles according to claim 1, wherein the geogrid includes a plurality of transverse reinforcing bars and a plurality of longitudinal reinforcing bars, and the transverse reinforcing bars and the longitudinal reinforcing bars are welded in an interlaced manner.

5. The inter-pile protection net for cast-in-place piles according to claim 4, wherein the transverse reinforcing bars and the longitudinal reinforcing bars are located on the same plane.

6. The protection net for cast-in-place piles according to claim 5, wherein the end faces of the battens are rectangular or circular in shape.

7. A method for installing a protection net between cast-in-place piles according to claim 1, wherein: the method comprises the following steps:

welding the cast-in-place pile reinforcement cage, and fixing the wood bar on a spiral hoop of the cast-in-place pile reinforcement cage;

b, the battens are bound firmly in the longitudinal and transverse directions by binding wires, and two adjacent battens are bound at the same height position;

b, excavating earth, leaking the battens, and chiseling the leaking grooves and the reinforcement cage stirrups of the cast-in-place pile by the battens;

c, utilizing the S-shaped draw hook to firmly bind the reinforcement cage stirrup with the geogrid to form the protective net between the cast-in-place pile piles;

d: and after the protective net among the cast-in-place piles is firmly installed and fixed, the construction of the guniting protecting wall is carried out.