CN219045174U - Waterproof structure of pile head of filling pile - Google Patents

Abstract

The utility model discloses a waterproof structure of a pile head of a cast-in-place pile, which belongs to the technical field of pile head waterproofing, and comprises a pile head, a cushion layer, a first slurry reinforcing layer, a waterproof coiled material layer, a second slurry reinforcing layer and a protective layer; the cushion layer is paved on the ground base layer around the pile head; the first slurry reinforcing layer is coated on the surface of the pile head exposed out of the cushion layer; the waterproof coiled material layer is paved on the top surface of the cushion layer, and the end part of the waterproof coiled material layer extends to the top surface of the first slurry reinforcing layer; the second slurry reinforcing layer is paved on the first slurry reinforcing layer; the protective layer is arranged on the waterproof coiled material layer and is contacted with the second slurry reinforcing layer. The utility model adopts the non-shrinkage grouting material and the waterproof coiled material to carry out composite construction, has the characteristics of outstanding peristaltic deformation capability, no toxicity, no harm, no smell, no pollution and no aging by the non-shrinkage grouting material, has good waterproof performance, and can be perfectly combined with the waterproof coiled material in time under the complex foundation pit environment to form a good waterproof system.

Description

Waterproof structure of pile head of filling pile

Technical Field

The utility model belongs to the technical field of pile head waterproofing, and particularly relates to a pile head waterproofing structure of a filling pile.

Background

The underground waterproof of the building is an important component for ensuring the structure of the building not to be affected by groundwater and preventing the interior space of the basement from being damaged by groundwater, along with the social development, various underground spaces are increasingly applied, the application of pile foundations is more and more extensive, the pile head waterproof is the beginning of the waterproof of the whole building and is also a key point of the leakage of the basement, particularly for desert coastal areas, the building is corroded by seawater for a long time, the quality and the service life of the building are seriously affected, and therefore the pile head waterproof is of great importance. At present, most pile heads are waterproof by adopting waterproof coatings such as epoxy resin, and the waterproof measures have poor waterproof effect and large construction pollution, can not meet the construction requirements, and greatly influence the construction quality.

Disclosure of Invention

The utility model aims to provide a pile head waterproof structure of a cast-in-place pile, which aims to solve the problems of poor pile head waterproof effect and large construction pollution in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a waterproof structure of a pile head of a cast-in-place pile comprises a pile head, a cushion layer, a first slurry reinforcing layer, a waterproof coiled material layer, a second slurry reinforcing layer and a protective layer; the cushion layer is paved on the ground base layer around the pile head; the first slurry reinforcing layer is coated on the surface of the pile head exposed out of the cushion layer; the waterproof coiled material layer is paved on the top surface of the cushion layer, and the end part of the waterproof coiled material layer extends to the top surface of the first slurry reinforcing layer; the second slurry reinforcing layer is paved on the first slurry reinforcing layer; the protective layer is arranged on the waterproof coiled material layer and is contacted with the second slurry reinforcing layer.

Further, the second slurry reinforcing layer comprises a radial paving part and an axial paving part which are connected with each other, wherein the radial paving part is arranged corresponding to the top surface of the pile head, and the axial paving part is arranged corresponding to the side wall of the pile head.

Further, the first slurry reinforcing layer and the second slurry reinforcing layer are both shrinkage-free grouting material layers.

Further, the cushion layer is a concrete cushion layer, and the top surface of the cushion layer is coated with cold primer oil.

Further, the external corner part of the first slurry reinforcing layer is provided with a round corner, and the internal corner part of the bottom is provided with a splayed corner.

Further, a series of vertical steel bars are embedded in the pile head; the radial laying part of the second slurry reinforcing layer is annular, and the inner end of the radial laying part is contacted with the vertical steel bars in the pile head.

Further, the end of the waterproof coiled material layer does not exceed the end of the radial laying part; and the end part of the waterproof coiled material layer is provided with sealant.

Further, the protective layer is a concrete protective layer.

The utility model has the following beneficial effects:

1. the waterproof structure of the pile head of the filling pile provided by the utility model adopts the non-shrinkage grouting material and the waterproof coiled material for composite construction, has the characteristics of no toxicity, no harm, no smell, no pollution and no aging due to the outstanding peristaltic deformation capability of the non-shrinkage grouting material, has good waterproof performance, and can be perfectly combined with the waterproof coiled material in time under the complex foundation pit environment to form a good waterproof system.

2. According to the waterproof structure of the pile head of the bored concrete pile, provided by the utility model, the cold primer oil is arranged at the bottom of the waterproof coiled material, so that the combination of the waterproof coiled material and the cushion layer can be enhanced, and meanwhile, the corner of the first slurry reinforcing layer is provided with the round corner and the splayed corner, so that the waterproof coiled material is further prevented from falling off.

Drawings

Fig. 1 is an overall schematic view of a pile head waterproof structure according to the present utility model.

In the figure: 1-pile head, 2-cushion layer, 3-first slurry reinforcing layer, 4-waterproof coiled material layer, 5-second slurry reinforcing layer and 6-protective layer.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1, the waterproof structure of the pile head of the cast-in-place pile provided by the utility model comprises a pile head 1, a cushion layer 2, a first slurry reinforcing layer 3, a waterproof coiled material layer 4, a second slurry reinforcing layer 5 and a protective layer 6; a series of vertical steel bars are embedded in the pile head 1; the cushion layer 2 is paved on the ground base layer around the pile head 1; the first slurry reinforcing layer 3 is coated on the surface of the pile head 1, which is exposed out of the cushion layer 2; the waterproof coiled material layer 4 is paved on the top surface of the cushion layer 2, and the end part of the waterproof coiled material layer extends to the top surface of the first slurry reinforcing layer 3; the second slurry reinforcing layer 5 is paved on the first slurry reinforcing layer 3 and comprises a radial paving part and an axial paving part which are mutually connected, wherein the radial paving part is arranged corresponding to the top surface of the pile head 1, and the axial paving part is arranged corresponding to the side wall of the pile head 1; the protective layer 6 is provided on the waterproofing membrane layer 4 and is in contact with the second slurry reinforcement layer 5.

The cushion layer 2 is a concrete cushion layer, and the top surface of the cushion layer is coated with cold primer oil, so that the construction of the waterproof coiled material layer 4 is facilitated.

The external corner part of the first slurry reinforcing layer 3 is set to be a round corner, and the internal corner part of the bottom contacted with the cushion layer 2 is set to be a splayed corner, so that the waterproof coiled material layer 4 can be conveniently attached and paved.

The radial laying part of the second slurry reinforcing layer 5 is arranged in a ring shape, and the inner end of the radial laying part is contacted with the vertical steel bars in the pile head 1.

The end of the waterproof coiled material layer 4 on the top surface of the pile head 1 does not exceed the end of the radial laying part, and the end of the waterproof coiled material layer 4 is provided with sealant for head collecting treatment.

The first slurry reinforcing layer 3 and the second slurry reinforcing layer 5 are both shrinkage-free grouting material layers.

The protective layer 6 is a concrete protective layer.

A construction method of a pile head waterproof structure of a cast-in-place pile comprises the following steps:

step one, ensuring that the cushion layer 2 is flat, firm, free of sand, free of pitting, free of clear water, free of greasy dirt and free of burrs, and phenomena such as hollowing, loosening, sand generation, cracking, uneven and the like cannot occur, for example, the pitting, sand generation and cracking of a base layer are repaired and flattened by adopting 1:3 cement mortar; removing loose concrete and slurry of the pile head 1, and soaking the pile head 1 to wet the top surface of the pile head 1;

step two, externally expanding a 25mm formwork along one circle of the pile head 1, wherein the formwork is made of iron sheets, and the iron sheets are fixed by steel bar circles; the pile core is made into a cross line, then, non-shrinkage grouting material is used for pouring to the designed elevation, a first slurry reinforcing layer 3 is formed, the non-shrinkage grouting material is kept stand and trowelled after passing through the center of the cross line, and the coating is sprayed for curing for 2-3 days;

step three, after the first slurry reinforcing layer 3 reaches the required strength, entering a waterproof stage, and making a 40 x 40 splay angle at the internal corner of the first slurry reinforcing layer, wherein the external corner is required to be subjected to arc treatment;

step four, the bedding layer 2 is dried and cleaned, then the periphery of the pile head 1 is coated with cold primer oil, the periphery of the pile head 1 is coated with the cold primer oil uniformly by using a brush, the thickness of the cold primer oil is about 0.15-0.2mm, no missing coating, no bottoming and no pitting exist, and the cold primer oil at the top of the pile head 1 returns to 10cm;

baking the bottom surface and the base layer of the waterproof coiled material by using a spray gun to melt asphalt on the surface of the coiled material, baking the coiled material while rolling forwards, adjusting the temperature and the moving speed of flame, controlling the temperature of the asphalt on the surface of the waterproof coiled material to be between 200 and 300 ℃, enabling the overlapping width of the long side and the short side of the waterproof coiled material to be 100mm, enabling the bonding to be uniform, enabling the transverse overlapping to be staggered by 1/3 length when two adjacent waterproof coiled materials on the same layer are paved, enabling overlapping and staggered joints of the upper waterproof coiled material and the lower waterproof coiled material to be 1/3 of the width, enabling the two waterproof coiled materials not to be vertically paved, enabling the waterproof coiled material on the top of the pile head 1 to return to 5cm, and collecting the pile head by using sealant;

and step six, napping the first slurry reinforcing layer 3, expanding the pile head 1 for 25mm again, supporting a formwork around the reinforcing steel bars, wherein the formwork is 25mm higher than the pile top, uniformly spraying an interfacial agent on the pile head 1, pouring with a shrinkage-free grouting material, leveling the pile head 1, and sprinkling and curing for 2-3 days.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. A bored concrete pile head waterproof construction, its characterized in that: the waterproof pile comprises a pile head (1), a cushion layer (2), a first slurry reinforcing layer (3), a waterproof coiled material layer (4), a second slurry reinforcing layer (5) and a protective layer (6); the cushion layer (2) is paved on the ground base layer around the pile head (1); the first slurry reinforcing layer (3) is coated on the surface of the pile head (1) exposed out of the cushion layer (2); the waterproof coiled material layer (4) is paved on the top surface of the cushion layer (2), and the end part of the waterproof coiled material layer extends to the top surface of the first slurry reinforcing layer (3); the second slurry reinforcing layer (5) is paved on the first slurry reinforcing layer (3); the protective layer (6) is arranged on the waterproof coiled material layer (4) and is contacted with the second slurry reinforcing layer (5).

2. A pile head waterproofing structure according to claim 1, characterized in that: the second slurry reinforcing layer (5) comprises a radial paving part and an axial paving part which are connected with each other, the radial paving part is arranged corresponding to the top surface of the pile head (1), and the axial paving part is arranged corresponding to the side wall of the pile head (1).

3. A pile head waterproofing structure according to claim 1, characterized in that: the first slurry reinforcing layer (3) and the second slurry reinforcing layer (5) are shrinkage-free grouting material layers.

4. A pile head waterproofing structure according to claim 1, characterized in that: the cushion layer (2) is a concrete cushion layer, and the top surface of the cushion layer is coated with cold primer oil.

5. A pile head waterproofing structure according to claim 1, characterized in that: the external corner part of the first slurry reinforcing layer (3) is provided with a round corner, and the internal corner part of the bottom is provided with a splayed corner.

6. A pile head waterproofing structure according to claim 2, characterized in that: a series of vertical steel bars are embedded in the pile head (1); the radial laying part of the second slurry reinforcing layer (5) is annular, and the inner end of the radial laying part is contacted with the vertical steel bars in the pile head (1).

7. A pile head waterproofing structure according to claim 2, characterized in that: the end part of the waterproof coiled material layer (4) does not exceed the end part of the radial laying part; and the end part of the waterproof coiled material layer (4) is provided with sealant.

8. A pile head waterproofing structure according to claim 1, characterized in that: the protective layer (6) is a concrete protective layer.

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