CN113186920A - Pile foundation pile head integral breaking structure - Google Patents
Pile foundation pile head integral breaking structure Download PDFInfo
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- CN113186920A CN113186920A CN202110628138.6A CN202110628138A CN113186920A CN 113186920 A CN113186920 A CN 113186920A CN 202110628138 A CN202110628138 A CN 202110628138A CN 113186920 A CN113186920 A CN 113186920A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
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Abstract
The invention relates to an integral pile head breaking structure of a pile foundation, wherein a reinforcement cage is arranged in the pile foundation, the reinforcement cage comprises a plurality of main reinforcements which are distributed along an annular shape and are vertically arranged and a plurality of reinforcing ribs which are annularly connected with the main reinforcements, and the pile head breaking structure comprises a first lead element, a second lead element and a steel wire rope; the first lead element and the second lead element are respectively arranged on the outer sides of a pair of adjacent main ribs and correspond to the pile head breaking height position; two ends of the steel wire rope are respectively led out of the upper end of the pile foundation upwards from the two lead elements, the steel wire rope between the two lead elements is partially wound on an arc formed by the inner sides of the main ribs, partially wound on an arc matched with the outer diameter of the pile foundation on the outer sides of the main ribs, and the joint of the two steel wire ropes is positioned between the pair of adjacent main ribs; when the pile head is broken, one end or two ends of the steel wire rope are pulled, and the two steel wire ropes respectively cut the concrete on the outer side and the inner side of the main reinforcement, so that the whole pile head is easy to break from the pile foundation.
Description
Technical Field
The invention relates to a pile foundation pile head breaking structure, and belongs to the field of civil engineering.
Background
After the pile foundation of the reinforced concrete is poured, the pile head needs to be broken, and the reinforcing steel bars of the pile head are reserved. The common pile head breaking method is construction of manual chiseling, in the method, after a bearing platform is excavated, a main rib of a reinforcement cage is firstly chiseled by a pneumatic pick manually, then pile head separation is carried out, and then a hoisting device is adopted to hoist the pile head; the main reinforcement of the reinforcement cage is dug out slowly, and the efficiency is low; the damage to the main ribs is large; the broken pile head is uneven and has certain damage to the pile foundation.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a pile head which is convenient and efficient to break and low in cost, and avoids damage to main ribs.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a pile head breaking structure of a pile foundation is provided with a steel reinforcement cage, wherein the steel reinforcement cage comprises a plurality of main reinforcements which are distributed annularly and vertically and a plurality of reinforcing ribs which are arranged at different height positions and are annularly connected with the main reinforcements; the first lead element and the second lead element are respectively arranged on the outer sides of a pair of adjacent main ribs and correspond to the pile head breaking height position; two ends of the steel wire rope are respectively led out of the upper end of the pile foundation upwards from the two lead elements, the steel wire rope between the two lead elements is partially wound on an arc formed by the inner sides of the main ribs, partially wound on an arc matched with the outer diameter of the pile foundation on the outer sides of the main ribs, and the joint of the two steel wire ropes is positioned between the pair of adjacent main ribs; the supporting ring is arranged at a position matched with the pile head breaking height, and the protective sleeve is sleeved on each main rib and positioned on the supporting ring; when the pile head is broken, one end or two ends of the steel wire rope are pulled to respectively cut the concrete outside and inside the main reinforcement by the steel wire rope which surrounds the arc matched with the outer diameter of the pile foundation and the arc inside the main reinforcement, so that the whole pile head is easy to break from the pile foundation.
The technical scheme is further designed as follows: the pile head breaking structure further comprises an initial inner side positioning piece and an initial outer side positioning piece, and the steel wire rope encircling the inner side arc of the main reinforcement keeps an arc shape through the initial inner side positioning piece; and the steel wire rope encircling the arc matched with the outer diameter of the pile foundation forms an arc shape at a position corresponding to the breaking height through the initial outer side positioning piece.
The initial inner side positioning piece is a U-shaped clamp which fixes the steel wire rope on the main rib; the initial outer side positioning piece is an L-shaped rod piece arranged on the outer side of the main rib, and the steel wire rope is supported on the L-shaped rod piece.
The pile head breaking structure further comprises a third lead element, the third lead element and the second lead element are arranged on the same main rib and located on the inner side of the main rib, and a steel wire rope surrounding the inner arc of the main rib penetrates through the third lead element.
The first, second and third lead elements are nuts, the first and second lead elements are arranged transversely, and the third lead element is arranged longitudinally.
The main reinforcement protection sleeve is provided with a steel wire in a penetrating way, and the main reinforcement protection box is bound on the main reinforcement through the steel wire and connected with the main reinforcement.
The supporting ring is evenly provided with a plurality of round holes along the circumferential direction, steel wires penetrate through the round holes, and the supporting ring is bound on the main ribs through the steel wires and is connected with the main ribs.
The length of the steel wire rope is larger than the sum of 2 times of the diameter of the steel reinforcement cage and 2 times of the pile top burial depth of the pile foundation.
The invention has the beneficial effects that:
according to the invention, the main reinforcement protective sleeve is sleeved outside the reinforcement cage of the pile foundation, so that the combination of the main reinforcement and the concrete is isolated; simultaneously, the steel wire ropes are preset on the inner side and the outer side of the steel reinforcement cage, the steel wire ropes are drawn out when the pile foundation concrete is initially set, the concrete on the outer side of the steel reinforcement cage and the pile core concrete are cut, and the main reinforcement protective sleeve and the pile head concrete are taken out in the pile head excavation process, so that the purpose of breaking the pile head is achieved.
The invention does not need to use machinery to break the concrete any more, has avoided the damage and destruction to the main reinforcement in breaking the construction; the plane of the broken pile head is relatively flat. The pile head breaking efficiency is high, the construction is simple, and the method is economical and practical.
Drawings
FIG. 1 is a schematic structural diagram of a breaking structure according to an embodiment of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;
fig. 4 is a schematic view showing the structure of fig. 1 for mounting the kingwire protection box and the bracket.
The steel bar protection device comprises a steel bar cage 1, a main bar 11, a reinforcing bar 12, a U-shaped clamp 13, an L-shaped rod piece 14, a main bar protection sleeve 2, a supporting ring 3, a steel wire rope 4, a first lead element 5, a third lead element 6, a second lead element 7, a fixed steel pipe 8 and a protection sleeve 9.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Examples
As shown in fig. 1, a reinforcement cage 1 is disposed in a pile foundation of reinforced concrete, the reinforcement cage 1 includes a plurality of main reinforcements 11 distributed along a ring and vertically disposed, and a plurality of reinforcing ribs 12 disposed at different height positions and annularly connected to the main reinforcements, and one reinforcing rib 12 is disposed at a pile head breaking height position.
In the embodiment, two adjacent main ribs 11 are taken from the plurality of main ribs 11, a first lead element 5 and a second lead element 7 are respectively welded on the outer sides of the two main ribs 11, the first lead element 5 and the second lead element 7 are horizontally arranged, a third lead element 6 which is vertically arranged is welded on the inner side of the main rib provided with the second lead element 7, the lead elements all adopt nuts in the embodiment, and the arrangement positions of the three lead elements correspond to the pile top elevation position of the reinforcement cage 1, namely the pile head breaking height position; combine shown in fig. 2 and 3, wire rope 4 one end is vertical to be stretched into from 1 top of steel reinforcement cage, passes first lead wire component 5 earlier, then winds to 1 inboard of steel reinforcement cage and encircles 1 inboard a week of steel reinforcement cage along the horizontal direction, then passes third lead wire component 6, winds to 1 outside of steel reinforcement cage and encircles 1 outside a week of steel reinforcement cage along the horizontal direction again from the middle of above-mentioned two adjacent main muscle 11, and it upwards passes second lead wire component 7 to stretch out from 1 top of steel reinforcement cage again along the vertical direction again. In the embodiment, a plurality of U-shaped clamps 13 are arranged on the circumference of the reinforcing rib 12 positioned at the pile head breaking height position, and the part of the steel wire rope 4 surrounding the arc on the inner side of the steel reinforcement cage 1 is fixed on the inner side of the steel reinforcement cage 1 through the U-shaped clamps 13; wire rope 4 winds the diameter and the pile foundation external diameter adaptation of establishing a week in the steel reinforcement cage 1 outside in this embodiment, and wire rope 4 winds and establishes a week and wears out from third nut 7 in the 1 circumference outside 40 mm department of steel reinforcement cage promptly, guarantees that wire rope 4 has sufficient depth of cut to the protective layer concrete when pulling out wire rope 4. In the embodiment, the part of the main reinforcement 11 outside the pile head breaking height position is provided with an L-shaped rod, and the part of the steel wire rope 4 surrounding the outer side of the steel reinforcement cage 1 is supported on the L-shaped rod, so that the diameter of the part of the steel wire rope is ensured to be matched with the outer diameter of the pile foundation, meanwhile, the part of the steel wire rope cannot droop under the neutral action, and the part of the steel wire rope is always positioned on the pile head breaking height position.
The length of the steel wire rope 4 adopted by the embodiment is larger than the sum of 2 times of the diameter of the steel reinforcement cage and 2 times of the embedding depth of the pile top, and the steel wire rope 4 can still extend out of the top of the steel reinforcement cage after being wound around the steel reinforcement cage for each circle.
When the pile foundation concrete is initially set, one end or two ends of a steel wire rope 4 are pulled by using an excavator or a jack, the steel wire rope 4 is pulled out, the steel wire rope 4 which surrounds on an arc matched with the outer diameter of the pile foundation and on an arc on the inner side of a main rib is gradually folded towards the direction close to the first lead element and the second lead element, the third lead element 6 can play a role in guiding in the folding process of the steel wire rope 4, the steel wire rope 4 surrounds the inner side part of the reinforcement cage 1 to cut pile core concrete, the steel wire rope 4 surrounds the outer side part of the reinforcement cage 1 to cut protective layer concrete on the outer side of the reinforcement cage 1, and a cutting surface formed by the steel wire rope 4 and the protective layer concrete is convenient for taking out a pile head concrete head when the pile head is excavated, so that the purpose of breaking the pile head is achieved.
One end of the steel wire rope 4 is fixed at the upper end of a steel bar cage lifting rib, the other end of the steel wire rope is fixed on a fixed steel pipe 8 arranged above a pile foundation, the two ends of the fixed steel pipe 8 are fixed on the ground, the pile foundation is arranged in a pile hole, and a pile casing 9 is arranged in the pile hole and used for preventing hole collapse.
As shown in fig. 4, a main reinforcement protective sleeve 2 is sleeved outside the reinforcement cage 1, an annular supporting ring 3 is arranged at the bottom of the main reinforcement protective sleeve 2, and the supporting ring 3 is located above the three lead elements. The main reinforcement protective sleeve 2 is made of plastic materials, is sleeved on each main reinforcement 11 according to the anchoring length of the main reinforcement, and is bound on the main reinforcement 11 by adopting a steel wire; the supporting ring 13 at the lower part of the protection box is evenly provided with round holes along the circumference of the ring, and a steel wire passes through the round holes to tie the supporting ring 13 and the main reinforcement 11 together, so that the supporting ring is fixed at the elevation of the top of the steel reinforcement cage pile. The main reinforcement protective sleeve 2 can be used to surround 3 and pile head concrete when pouring a pile foundation.
The technical solutions of the present invention are not limited to the above embodiments, and all technical solutions obtained by using equivalent substitution modes fall within the scope of the present invention.
Claims (9)
1. The utility model provides a structure is abolished to pile head of pile foundation, be equipped with the steel reinforcement cage in the pile foundation, the steel reinforcement cage includes along a plurality of main muscle of cyclic annular distribution and vertical setting and sets up a plurality of strengthening ribs of connecting each main muscle on different altitude positions and annular, its characterized in that: the pile head breaking structure comprises a main reinforcement protective sleeve, a supporting ring, a first lead element, a second lead element and a steel wire rope; the first lead element and the second lead element are respectively arranged on the outer sides of a pair of adjacent main ribs and correspond to the pile head breaking height position; two ends of the steel wire rope are respectively led out of the upper end of the pile foundation upwards from the two lead elements, the steel wire rope between the two lead elements is partially wound on an arc formed by the inner sides of the main ribs, partially wound on an arc matched with the outer diameter of the pile foundation on the outer sides of the main ribs, and the joint of the two steel wire ropes is positioned between the pair of adjacent main ribs; the supporting ring is arranged at a position matched with the pile head breaking height, and the protective sleeve is sleeved on each main rib and positioned on the supporting ring; when the pile head is broken, one end or two ends of the steel wire rope are pulled to respectively cut the concrete outside and inside the main reinforcement by the steel wire rope which surrounds the arc matched with the outer diameter of the pile foundation and the arc inside the main reinforcement, so that the whole pile head is easy to break from the pile foundation.
2. The pile foundation pile head integral demolition structure according to claim 1, characterized in that: the pile head breaking structure further comprises an initial inner side positioning piece and an initial outer side positioning piece, and the steel wire rope encircling the inner side arc of the main reinforcement keeps an arc shape through the initial inner side positioning piece; and the steel wire rope encircling the arc matched with the outer diameter of the pile foundation forms an arc shape at a position corresponding to the breaking height through the initial outer side positioning piece.
3. The pile foundation pile head integral demolition structure according to claim 2, characterized in that: the initial inner side positioning piece is a U-shaped clamp which fixes the steel wire rope on the main rib.
4. The pile foundation pile head integral demolition structure according to claim 3, characterized in that: the initial outer side positioning piece is an L-shaped rod piece arranged on the outer side of the main rib, and the steel wire rope is supported on the L-shaped rod piece.
5. The pile foundation pile head integral demolition structure according to claim 1, characterized in that: the pile head breaking structure further comprises a third lead element, the third lead element and the second lead element are arranged on the same main rib and located on the inner side of the main rib, and a steel wire rope surrounding the inner arc of the main rib penetrates through the third lead element.
6. The pile foundation pile head integral demolition structure according to claim 5, wherein: the first, second and third lead elements are nuts, the first and second lead elements are arranged transversely, and the third lead element is arranged longitudinally.
7. The pile foundation pile head integral demolition structure according to claim 1, characterized in that: the main reinforcement protection sleeve is provided with a steel wire in a penetrating way, and the main reinforcement protection box is bound on the main reinforcement through the steel wire and connected with the main reinforcement.
8. The pile foundation pile head integral demolition structure according to claim 1, characterized in that: the supporting ring is evenly provided with a plurality of round holes along the circumferential direction, steel wires penetrate through the round holes, and the supporting ring is bound on the main ribs through the steel wires and is connected with the main ribs.
9. The pile foundation pile head integral demolition structure according to claim 1, characterized in that: the length of the steel wire rope is larger than the sum of 2 times of the diameter of the steel reinforcement cage and 2 times of the pile top burial depth of the pile foundation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110628138.6A CN113186920A (en) | 2021-06-06 | 2021-06-06 | Pile foundation pile head integral breaking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110628138.6A CN113186920A (en) | 2021-06-06 | 2021-06-06 | Pile foundation pile head integral breaking structure |
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| Publication Number | Publication Date |
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| CN113186920A true CN113186920A (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110628138.6A Pending CN113186920A (en) | 2021-06-06 | 2021-06-06 | Pile foundation pile head integral breaking structure |
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| CN (1) | CN113186920A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875931A (en) * | 2022-06-08 | 2022-08-09 | 中铁七局集团郑州工程有限公司 | Building enclosure, construction method and dismantling method of building enclosure |
| CN114960648A (en) * | 2022-06-14 | 2022-08-30 | 重庆建工集团股份有限公司 | Concrete pile head line cutting device |
-
2021
- 2021-06-06 CN CN202110628138.6A patent/CN113186920A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114875931A (en) * | 2022-06-08 | 2022-08-09 | 中铁七局集团郑州工程有限公司 | Building enclosure, construction method and dismantling method of building enclosure |
| CN114960648A (en) * | 2022-06-14 | 2022-08-30 | 重庆建工集团股份有限公司 | Concrete pile head line cutting device |
| CN114960648B (en) * | 2022-06-14 | 2023-11-14 | 重庆建工集团股份有限公司 | Concrete pile head line cutting device |
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