CN211498832U

CN211498832U - Bored pile head

Info

Publication number: CN211498832U
Application number: CN201921217890.6U
Authority: CN
Inventors: 张钰锋; 储晓雷; 王维奇; 吴刚; 姜志伟; 关惠升
Original assignee: Nantong Huaxin Construction Engineering Group Co ltd
Current assignee: Nantong Huaxin Construction Engineering Group Co ltd
Priority date: 2019-07-30
Filing date: 2019-07-30
Publication date: 2020-09-15
Anticipated expiration: 2029-07-30

Abstract

The utility model relates to a bored concrete pile head technical field, and discloses a bored concrete pile head, including the outer tube, the inside fixed mounting of outer tube has the bracket, the inside fixed mounting of outer tube has interior sleeve pipe, bracket and interior sleeve pipe fixed connection are with interior sleeve pipe and outer tube fixed, the inside movable mounting of interior sleeve pipe has the steel reinforcement cage, the outer tube all bonds with the inside of bracket and has the barrier film; the pile head of the cast-in-place pile further comprises a steel bar sleeve, wherein the steel bar sleeve comprises sleeve bodies which correspond to the number and the position of the inner sleeves and can sleeve the inner sleeves, and all the sleeve bodies are connected into a whole circular connecting rib. This drilling bored concrete pile head possesses the advantage such as being convenient for chisel and removes, has solved present bored concrete pile head and after the concrete setting, because bored concrete pile stone sand subsides volume slightly big, the bored concrete pile firmness that the top formed is not up to standard, need chisel and remove, need consume a large amount of manpowers, machinery and time equipment and chisel the problem of removing work.

Description

Bored pile head

Technical Field

The utility model relates to a bored concrete pile head technical field specifically is a bored concrete pile head.

Background

A bored pile is a pile which is formed by in-place pore-forming and pouring concrete or reinforced concrete, and is commonly used, 1. the bored pile is formed by using a spiral drilling machine, a submersible drilling machine and the like to form pores on site and pouring concrete, no vibration and no soil squeezing are generated during construction, but the settlement amount of the pile is slightly large, the spiral drilling machine is suitable for cohesive soil, sandy soil, artificial filling soil and the like above the underground water level, drilled soil blocks rise out of a discharge hole along spiral blades on the drill rod, the aperture is about 300mm, the drilling depth is 8-12 m, the drill rod is selected according to soil quality and water content, the submersible drilling machine is suitable for cohesive soil, sandy soil, silt, muddy soil and the like, and is particularly suitable for forming pores in soil layers with higher underground water level, a slurry wall is used for preventing collapse during drilling, the drilling is carried out by using clear water in the clay, and a slurry wall is self-; the prepared mud is injected into sandy soil for drilling, the drilled soil scraps are circularly removed by using the mud, holes are cleaned after the drilled soil scraps are drilled to the required depth so as to remove the soil scraps sinking at the bottom of the holes, and the sedimentation amount of the pile is reduced.

At present, after the concrete is solidified, the pile head of the cast-in-place pile needs to be chiseled because the stone and sand settlement of the cast-in-place pile is slightly large and the firmness of the cast-in-place pile formed at the top does not reach the standard. After the concrete of the existing cast-in-place pile is solidified, the reinforcement cage and the concrete are combined into a whole, and chiseling can be performed only by consuming a large amount of manpower, machinery and time equipment.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a drilling bored concrete pile head possesses the advantages such as being convenient for chisel and remove, has solved present bored concrete pile head and has solidified the back at the concrete, because bored concrete pile stone sand settlement is slightly big, the bored concrete pile firmness that the top formed is not up to standard, need chisel and remove, need consume a large amount of manpowers, machinery and time equipment and chisel the problem of work.

(II) technical scheme

For the purpose of realizing the above-mentioned chisel of being convenient for remove, the utility model provides a following technical scheme: a bored pile head comprises an outer sleeve, wherein a bracket is fixedly arranged inside the outer sleeve, an inner sleeve is fixedly arranged inside the outer sleeve, the bracket is fixedly connected with the inner sleeve to fix the inner sleeve and the outer sleeve, a reinforcement cage is movably arranged inside the inner sleeve, and isolation films are respectively bonded inside the outer sleeve and the bracket; the pile head of the cast-in-place pile further comprises a steel bar sleeve, wherein the steel bar sleeve comprises sleeve bodies which correspond to the number and the position of the inner sleeves and can sleeve the inner sleeves, and all the sleeve bodies are connected into a whole circular connecting rib.

Preferably, the number of the brackets is 6-8, and the brackets are uniformly distributed at equal intervals.

Preferably, the thickness of the isolation film is not less than two millimeters, and the isolation film is a corrosion-resistant film.

Preferably, the length of the sleeve body of the steel bar sleeve accounts for 8-10% of the length of the whole cast-in-place bored pile, and the sleeve wall thickness of the sleeve body of the steel bar sleeve is 1.5-5 cm.

Preferably, the connecting ribs are arranged in plurality and fixedly mounted at the top of the sleeve body.

Preferably, the top of the sleeve body of the steel bar sleeve is a sealing structure.

(III) advantageous effects

Compared with the prior art, the utility model provides a drilling bored concrete pile head possesses following beneficial effect:

after the pile head of the bored pile is drilled, the reinforcement cage is placed into the pile hole, the inner sleeve is fixed with the reinforcement cage by using an adhesive tape, the outer sleeve is placed into the pile hole by using a crane so as to cover the outer sleeve on the outer side of the reinforcement cage, then sleeving the reinforcing steel bar on the outer sleeve, pouring concrete into the pile hole through the inner part of the outer sleeve, excavating the earth surface outside the outer sleeve when the concrete sand is settled and solidified to form a concrete pile and needs to be chiseled, because of the existence of the isolating membrane, the outer sleeve can be taken out of the concrete pile by using the crane, then the reinforcing steel bar sleeve is taken out, the concrete pile and the reinforcing steel bar cage are isolated by the inner sleeve, and keep apart once again through the steel reinforcement cover between interior sleeve pipe and the concrete pile, left sufficient clearance, the concrete pile and the steel reinforcement cage separation of being convenient for chisel to remove part compare ordinary chisel and remove the mode, and is simple and convenient more quick to the mesh of being convenient for chisel to remove has been reached.

Drawings

FIG. 1 is a schematic structural diagram of a pile head of a cast-in-situ bored pile;

fig. 2 is a schematic top view of an embodiment of the present invention;

fig. 3 is a schematic view of the structure of the reinforcing bar cover according to the present invention;

fig. 4 is a schematic structural view of the steel bar cover of the present invention;

in the figure: the concrete pile comprises an outer sleeve 1, an isolating membrane 2, a bracket 3, an inner sleeve 4, a steel reinforcement cage 5, a concrete pile 6, a steel reinforcement sleeve 7, a connecting rib 7a and a sleeve body 7 b.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a bored pile head comprises an outer sleeve 1, wherein a bracket 3 is fixedly arranged inside the outer sleeve 1, an inner sleeve 4 is fixedly arranged inside the outer sleeve 1, the bracket 3 and the inner sleeve 4 are fixedly connected to fix the inner sleeve 4 and the outer sleeve 1, a reinforcement cage 5 is movably arranged inside the inner sleeve 4, and isolation films 2 are respectively bonded inside the outer sleeve 1 and the bracket 3; the pile head of the cast-in-place pile further comprises a steel bar sleeve 7, wherein the steel bar sleeve 7 comprises sleeve bodies 7b which correspond to the number and the position of the inner sleeve 4 and can sleeve the inner sleeve 4, and all the sleeve bodies 7b are connected into a whole circular connecting rib 7 a.

Preferably, 6-8 brackets 3 are installed and arranged and are uniformly distributed at equal intervals.

Preferably, the thickness of the isolation film 2 is not less than two millimeters, and the isolation film 2 is a corrosion-resistant film.

Preferably, the length of the sleeve body 7b of the steel bar sleeve 7 accounts for 8-10% of the length of the whole cast-in-place bored pile, and the sleeve wall thickness of the sleeve body 7b of the steel bar sleeve 7 is 1.5-5 cm.

Preferably, the connecting ribs 7a are provided in plurality and fixedly mounted on the top of the sleeve body 7 b.

Preferably, the top of the sleeve body 7b of the steel bar sleeve 7 is a sealing structure.

After the hole is punched, the reinforcement cage 5 is placed in the pile hole, the inner sleeve 4 is fixed with the reinforcement cage 5 through the adhesive tape, and the outer sleeve 1 is placed in the pile hole through the crane, so that the outer sleeve 1 covers the outer side of the reinforcement cage 5. And (3) pouring concrete into the pile hole through the inner part of the outer sleeve 1, forming a concrete pile 6 after the concrete stone sand is settled and solidified, and then standing to enable the concrete pile to settle naturally until the concrete pile is stable.

When the chiseling point is needed, the earth surface outside the outer sleeve 1 is dug, due to the existence of the isolating membrane 2, the outer sleeve 1 can be taken out of the concrete pile 6 by using a crane, the concrete pile 6 and the reinforcement cage 5 are isolated by the inner sleeve 4, the inner sleeve 4 and the concrete pile 6 are isolated once by the reinforcement sleeve 7, the length of the sleeve body 7b of the reinforcement sleeve 7 is limited to be 8-10% of the length of the whole drilling cast-in-place pile, the sleeve wall thickness of the sleeve body 7b of the reinforcement sleeve 7 is 1.5-5 cm, the settlement of the cast-in-place pile is definitely smaller than the length of the sleeve body 7b of the reinforcement sleeve 7, and therefore the chiseling point is definitely located in the area isolated by. Because dual isolation can leave very big clearance between concrete pile and the steel reinforcement cage 5, can utilize the instrument earlier to chisel the concrete part when chiseling, reuse instrument to cut off unnecessary reinforcing bar department, whole operation is compared in directly chiseling the reinforced concrete pile and will be convenient many to the purpose of being convenient for chisel and removing has been reached.

After the chiseling work is finished, the gap between the reinforcement cage 5 and the concrete pile can be filled with concrete again. Compared with the existing chiseling mode, the whole process time is shortened by nearly one time, the construction working strength is greatly reduced, the construction difficulty is greatly reduced, and the reinforced concrete assembly does not need to be chiseled, so that professional equipment is not needed, and the cost is greatly reduced.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bored concrete pile head, includes outer tube (1), its characterized in that: a bracket (3) is fixedly arranged inside the outer sleeve (1), an inner sleeve (4) is fixedly arranged inside the outer sleeve (1), the bracket (3) is fixedly connected with the inner sleeve (4) to fix the inner sleeve (4) and the outer sleeve (1), a reinforcement cage (5) is movably arranged inside the inner sleeve (4), and isolating membranes (2) are respectively bonded inside the outer sleeve (1) and the bracket (3); the pile head of the cast-in-place pile further comprises a steel bar sleeve (7), wherein the steel bar sleeve (7) corresponds to the number and the position of the inner sleeve (4) and can sleeve the sleeve body (7b) of the inner sleeve (4) and connect all the sleeve bodies (7b) into a whole circular connecting rib (7 a).

2. A bored pile head according to claim 1, wherein: 6-8 brackets (3) are arranged and evenly distributed at equal intervals.

3. A bored pile head according to claim 1, wherein: the thickness of the isolating membrane (2) is not less than two millimeters, and the isolating membrane (2) is a corrosion-resistant membrane.

4. A bored pile head according to claim 1, wherein: the length of the sleeve body (7b) of the steel bar sleeve (7) accounts for 8-10% of the length of the whole cast-in-place bored pile, and the sleeve wall thickness of the sleeve body (7b) of the steel bar sleeve (7) is 1.5-5 cm.

5. A bored pile head according to claim 1, wherein: the connecting ribs (7a) are arranged in a plurality and fixedly arranged at the top of the sleeve body (7 b).

6. A bored pile head according to claim 1, wherein: the top of the sleeve body (7b) of the steel bar sleeve (7) is a sealing structure.