CN213571906U

CN213571906U - Pile top elevation control device for cast-in-place pile

Info

Publication number: CN213571906U
Application number: CN202022010077.0U
Authority: CN
Inventors: 姚伟兴; 倪光乐; 倪光寿; 段晨辉; 卢再芳; 陈真银
Original assignee: Guangzhou Taiji Engineering Technology Co ltd
Current assignee: Guangzhou Taiji Engineering Technology Co ltd
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2021-06-29
Anticipated expiration: 2030-09-14

Abstract

The utility model discloses a bored concrete pile top elevation controlling means relates to the bored concrete pile and pours technical field, including the elevation subassembly, the elevation subassembly includes first buoy, flexonics spare, second buoy and installs the tractive piece at protecting a section of thick bamboo upper end, flexonics spare's one end is connected the tractive piece, flexonics spare's the other end is connected the second buoy, first buoy is in the tractive piece with between the second buoy, first buoy fixes on the flexonics spare, the second buoy is through pulling down flexonics spare, so that first buoy sinks into in the thick liquid that protects in the section of thick bamboo. The device fine solution empty pile bolck elevation control deviation big problem reduces the material loss and alleviates the work load of breaking of later stage pile head.

Description

Pile top elevation control device for cast-in-place pile

Technical Field

The utility model relates to a bored concrete pile pours technical field, in particular to bored concrete pile top elevation controlling means.

Background

The cast-in-place pile is increasingly favored as an important foundation of a high-rise building due to the characteristic of high bearing capacity. At present, basement space is more and more widely used, high-rise buildings are often provided with basements, cast-in-place piles are generally constructed on the ground according to construction periods and process characteristics, so empty piles exist, the number of the empty piles is generally about 5-12 m, 0.8-1.0 laitance and excessive grouting quantity is reserved according to standard requirements, elevation control deviation of the pile top of the ultra-long empty pile in actual construction is large, material loss is caused during irrigation, difficulty in breaking pile heads in the later period is increased, and labor and people hurt money.

Disclosure of Invention

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the embodiment of the utility model provides a bored concrete pile bolck height controlling means to solve the big problem of empty pile bolck elevation control deviation, reduce the material loss and alleviate the work load of breaking out of later stage pile head.

The utility model discloses bored concrete pile top elevation controlling means, including the elevation subassembly, the elevation subassembly includes first buoy, flexonics spare, second buoy and installs the tractive piece at a fender section of thick bamboo upper end, flexonics spare's one end is connected the tractive piece, flexonics spare's the other end is connected the second buoy, first buoy is in the tractive piece with between the second buoy, first buoy fixes on the flexonics spare, the second buoy is through pulling down flexonics spare, so that first buoy sinks in the thick liquid in the fender section of thick bamboo.

As a further improvement of the above embodiment, the second buoy includes a cylindrical plastic barrel filled with stone or metal, and the density of the second buoy is less than 2.3 g/cm.

As a further improvement of the above embodiment, the first buoy is spherical PVC.

Furthermore, a through hole is formed in the first buoy, and the flexible connecting piece penetrates through the through hole and can adjust the distance between the first buoy and the second buoy.

In an optional or preferred embodiment, the flexible connecting member is a measuring rope, and the measuring rope is provided with scale marks.

In an alternative or preferred embodiment, the pulling block is a square timber.

Based on the technical scheme, the embodiment of the utility model provides a following beneficial effect has at least: in the technical scheme, the traction block is fixed on a pile casing of the cast-in-place pile, the traction block is connected with the second buoy through the flexible connecting piece, the first buoy is positioned between the traction block and the second buoy and is connected and fixed with the flexible connecting piece, the cast-in-place pile contains grout, the second buoy pulls the first buoy into the grout under the action of self gravity, the flexible connecting piece is adjusted to enable the second buoy to be suspended on the elevation surface of the top of the pile, the first buoy is positioned about 20cm below the grout liquid level, concrete is poured into the cast-in-place pile, when concrete is poured to the elevation surface of the top of the pile, the second buoy is supported by the concrete, the pulling force of the second buoy pulling the first buoy through the flexible connecting piece disappears, the first buoy rises under the buoyancy action of the grout, and whether the concrete is poured to the elevation surface of the top of the pile is judged by observing whether the grout is exposed from the liquid level or not, the problem that the elevation control deviation of the pile top of the empty pile is large is solved through the device, the material loss is reduced, and the workload of breaking and removing the pile head in the later period is reduced.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a cross-sectional view of an embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1, the cast-in-place pile top elevation control device in the embodiment includes an elevation component, the elevation component includes a first buoy 22, a flexible connector 23, a second buoy 24 and a pulling block 21 installed at an upper end portion of the casing 11, one end of the flexible connector 23 is connected with the pulling block 21, the other end of the flexible connector 23 is connected with the second buoy 24, the first buoy 22 is located between the pulling block 21 and the second buoy 24, the first buoy 22 is fixed on the flexible connector 23, the pulling block 21 is fixed, after the relative positions of the first buoy 22 and the second buoy 24 are adjusted, the first buoy 22 and the second buoy 24 are placed into the casing 11, the second buoy 24 pulls down the flexible connector 23 through the flexible connector 23, so that the first buoy 22 sinks into grout in the casing 11, specifically, the second buoy 24 pulls the first buoy 22 to sink into the grout in the casing 11 under its own gravity, and the pulling block 21 fixed on the casing 11 restricts the second buoy 24 through the flexible connector 23 On the pile top elevation surface 13.

Specifically, the pile casing 11 is cylindrical, surrounds the empty pile of the cast-in-place pile, contains slurry, is connected and fixed with the pulling block 21, the first buoy 22 and the second buoy 24 through the flexible connecting piece 23, and then adjusts the position of the first buoy 22 connected to the flexible connecting piece 23 to adjust the distance between the first buoy 22 and the second buoy 24 according to different pile top height surfaces 13 of each empty pile of the cast-in-place pile, and adjusts the length of the flexible connecting piece 23 between the pulling block 21 and the second buoy 24 to adjust the position of the second buoy 24 sunk into the empty pile of the cast-in-place pile, so as to meet different construction requirements. When the pile top pouring is started, the pulling block 21 is fixed to stretch across the pile casing 11, the first buoy 22 and the second buoy 24 are slowly placed into mud liquid in the pile casing 11, the weight of the second buoy 24 is larger than the sum of the first buoy 22 and the second buoy 24, the average density of the whole second buoy 24 is larger than that of the mud liquid, the first buoy 22 can be pulled by the flexible connecting piece 23 under the action of self gravity to overcome the buoyancy generated by the mud liquid and sink into the mud liquid, and preferably, the first buoy 22 sinks 20cm below the mud liquid level. When the second buoy 24 is stably suspended at an acceptable deviation position above and below the designed pile top elevation surface 13 through the flexible connector 23, concrete slurry is poured into the bottom surface of the slurry through the guide pipe 12 arranged in the casing 11, namely the bottom of the empty pile of the cast-in-place pile, the concrete slurry sinks to the bottom of the empty pile of the cast-in-place pile all the time because the density of the concrete slurry is larger than that of the slurry, when the poured concrete slurry is more and more, the concrete slurry surface at the bottom of the empty pile of the cast-in-place pile gradually rises to the bottom surface of the second buoy 24, the second buoy 24 is supported on the concrete slurry surface, at the moment, the force between the first buoy 22 and the second buoy 24 pulled through the flexible connector 23 disappears, the first buoy 22 rises under the action of the slurry buoyancy after losing the external force, when the first buoy 22 exposes the slurry, namely the pouring of the concrete reaches the designed pile top elevation surface 13, at the moment, the pouring of the concrete slurry can be stopped, through on-site inspection, the elevation control of the pile top of the empty pile is well completed, the difference between the pouring position of the concrete and the predicted designed elevation is not large, the loss of the concrete is reduced, and the workload of breaking the pile head at the later stage is also reduced.

In some of these embodiments, the second buoy 24 comprises a cylindrical plastic barrel, which can increase the contact area between the second buoy 24 and the concrete slurry, and the cylindrical plastic barrel is filled with stone or metal to increase the weight of the second buoy 24, so that the overall average density of the second buoy 24 is greater than the slurry, but the density of the second buoy 24 is less than 2.3g/cm, and when the concrete slurry surface is poured to the bottom of the second buoy 24, the concrete slurry surface rises because the concrete slurry density is greater than that of the second buoy 24, which will support the second buoy 24 to rise.

Preferably, the first buoy 22 is spherical PVC, the density of the PVC is lower than that of water and slurry, especially the first buoy is spherical, the buoyancy force applied to the water and slurry is relatively uniform, and when the tension force of the flexible connecting piece 23 disappears, the spherical PVC can float out of the water surface or the slurry surface under the action of the buoyancy force of the spherical PVC, so that the control and observation of the designed pile top high surface 13 of the hollow pile head in the embodiment are facilitated.

Further, be equipped with the through-hole on first buoy 22, flexible connection spare 23 passes the through-hole and can adjust the distance between first buoy 22 and the second buoy 24, it is specific, flexible connection spare 23 is the survey rope, be provided with the scale sign on the survey rope, choose for use survey rope one to be convenient in real time through the scale sign adjustment on the survey rope tie up the distance of controlling first buoy 22 relative second buoy 24 in the knot of first buoy 22, the length of the rope is known to the audio-visual, and the weight of rope is lighter, the buoyancy that receives also can not be too big, can regard as splendid link.

In an alternative or preferred embodiment, the pulling block 21 is a square timber, which is convenient to adjust and control, and convenient to transport, and the raw material can be collected on the construction site.

To sum up, the elevation subassembly of this embodiment's simple structure, and convenient operation, control concrete placement that can be fine is in the position of design pile top elevation face 13, and control elevation is accurate, does not receive the degree of depth influence of empty pile head, and the suitability is high.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides a cast-in-place pile top elevation controlling means which characterized in that: the novel grouting pile comprises an elevation component, wherein the elevation component comprises a first buoy (22), a flexible connecting piece (23), a second buoy (24) and a pulling block (21) arranged at the upper end part of a casing (11), one end of the flexible connecting piece (23) is connected with the pulling block (21), the other end of the flexible connecting piece (23) is connected with the second buoy (24), the first buoy (22) is located between the pulling block (21) and the second buoy (24), the first buoy (22) is fixed on the flexible connecting piece (23), and the second buoy (24) is made to sink into slurry in the casing (11) through pulling down the flexible connecting piece (23).

2. The cast-in-place pile top elevation control device according to claim 1, characterized in that: the second buoy (24) comprises a cylindrical plastic barrel filled with stones or metal, and the density of the second buoy (24) is less than 2.3 g/cm.

3. The cast-in-place pile top elevation control device according to claim 1, characterized in that: the first buoy (22) is spherical PVC.

4. The cast-in-place pile top elevation control device according to claim 1, characterized in that: the first buoy (22) is provided with a through hole, and the flexible connecting piece (23) penetrates through the through hole and can adjust the distance between the first buoy (22) and the second buoy (24).

5. The cast-in-place pile top elevation control device according to claim 4, characterized in that: the flexible connecting piece (23) is a measuring rope, and scale marks are arranged on the measuring rope.

6. The cast-in-place pile top elevation control device according to claim 1, characterized in that: the pulling block (21) is made of square wood.