CN108149685B - Method for repairing and reinforcing pile head of concrete pipe pile - Google Patents
Method for repairing and reinforcing pile head of concrete pipe pile Download PDFInfo
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- CN108149685B CN108149685B CN201711443438.7A CN201711443438A CN108149685B CN 108149685 B CN108149685 B CN 108149685B CN 201711443438 A CN201711443438 A CN 201711443438A CN 108149685 B CN108149685 B CN 108149685B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/64—Repairing piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/58—Prestressed concrete piles
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/60—Piles with protecting cases
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Abstract
The invention provides a method for repairing and reinforcing a concrete pipe pile head, and relates to a pile cap for repairing and reinforcing the concrete pipe pile head, which comprises an annular end plate, an outer sleeve, an inner sleeve and a waist-shaped connecting hole, wherein the outer sleeve is sleeved on the outer side surface of the annular end plate, the inner sleeve is sleeved on the inner side surface of the annular end plate, and the waist-shaped connecting hole is formed in the annular end plate; the method for repairing and reinforcing the pile head of the concrete pipe pile utilizes the pile cap, does not fill the cavity of the pipe pile on the basis of not changing the original structure of the pile head, and directly sleeves the pile cap on the pile head, so that core filling at the top of the pile head in later engineering or bottom sealing of the cavity at the bottom of the pipe pile can be normally carried out.
Description
Technical Field
The invention relates to the field of buildings, in particular to a method for repairing and reinforcing a pile head of a concrete pipe pile.
Background
The pretensioned prestressing high-strength concrete pipe pile has the outstanding advantages of short construction period, reliable quality, resource saving, less environmental pollution and the like, and is widely applied to construction projects; however, in the actual construction process, the pile head is occasionally broken due to the influence of adverse factors such as geology, construction and the like; under general conditions, the pile head cannot be constructed continuously after being broken, 1-2 identical tubular piles need to be additionally arranged beside the pile head through redesign, an upper bearing platform at the top of the pile head needs to be enlarged, construction cost is increased, and a large amount of manpower and material resources are consumed. If the rotten pile head can be repaired and reinforced to continue construction and meet the design requirements, great economic benefits and time benefits can be brought to all sides of the engineering.
The same kind of technology has been invented in the country of pile heads, for example, patent document 200920256194 describes a pile cap for repairing a pile head, which is provided with a sleeve only on the outer circle of an end plate, and is easily deformed and damaged when a geological pile head with high strength is driven.
Patent documents 200910263365 and 201310187506 also describe methods for repairing and reinforcing pile heads, but these methods have the following problems: the cavity structure of tubular pile is changed in the repair, and the cavity that makes the original great diameter of tubular pile becomes only a gas vent big, leads to the pile head top of later stage engineering to fill the core or the back cover concrete of filling tubular pile bottom cavity to go on smoothly, has certain limitation.
Further, the sulfur plaster method described in patent document 201310187506 requires on-site heating and melting, and harmful gases such as sulfur dioxide are generated during melting and pouring, which are harmful to the environment and the human body.
Disclosure of Invention
The invention aims to provide a pile cap which has strong anti-impact capability, does not need to change the cavity structure of a tubular pile during use and does not fill the cavity of the tubular pile, and also aims to provide a method for repairing and reinforcing the pile head of a concrete tubular pile, which is simple to operate.
One of the technical problems of the invention is realized as follows:
the utility model provides a reinforced pile cap is restoreed to concrete pipe pile head, includes ring end plate, outer sleeve, inner skleeve and waist shape connecting hole, the outer sleeve cup joints on the lateral surface of ring end plate, the inner skleeve cup joints on the medial surface of ring end plate, waist shape connecting hole sets up on ring end plate.
Preferably, the outer sleeve end face is lower than the annular end plate end face.
One of the technical problems of the present invention is to have the following advantages:
the inner circle and the outer circle of the annular end plate are respectively sleeved with a sleeve, and the pile body concrete is wrapped by two sides of the steel cylinder, so that the anti-impact capability is stronger, and the gap between the annular end plate and the top of the pile head is easy to fill and compact; in addition, the hollow inner sleeve does not seal the tubular pile cavity and does not fill the tubular pile cavity during construction, so that subsequent construction is more convenient.
The second technical problem of the present invention is realized as follows:
a method for repairing and reinforcing a pile head of a concrete pipe pile comprises the following steps:
step 10, sawing the damaged pile head flat at the deepest part of the damaged pile head, then circularly sawing the pile head from the top to the main rib for a circle, knocking off the concrete of the upper pile body, and exposing the main rib for 20-30 mm;
step 20, after the pile head is cleaned, sleeving a pile cap with the same specification on the pile head, wherein the pile cap is the pile cap in claim 1 or claim 2, sleeving the lower section of an outer sleeve of the pile cap on the outer side wall of the pile head, sleeving the lower section of an inner sleeve of the pile cap on the inner wall of the cavity, and aligning the main rib with the waist-shaped connecting hole;
step 30, knocking the pile cap to enable the annular end plate to descend to be tightly attached to the pile head, and adjusting the pile cap to be horizontal;
step 40, welding the main ribs on the waist-shaped connecting holes corresponding to the annular end plates one by one;
50, plugging and sealing the contact ring between the lower edge of the outer sleeve and the outer side wall of the pile body and the contact ring between the lower edge of the inner sleeve and the inner wall of the cavity by using a slightly wet clay ball to prevent leakage;
and step 60, preparing polymer concrete for repairing and reinforcing, pouring the polymer concrete onto the pile head from the middle of the annular end plate, tapping the outer sleeve while pouring to discharge air so as to ensure that the polymer concrete fills the gap between the pile cap and the pile head concrete, blocking in time if the seams between the outer sleeve and the inner sleeve and the pile body are leaked, and normally driving the pile after the polymer concrete is completely hardened.
Preferably, in the step 20, the distance between the annular end plate and the concrete at the top of the pile head is 10-20 mm.
Preferably, in the step 60, the polymer concrete is prepared from the following components in percentage by mass: 180-220 parts of polyester resin, 2-4 parts of initiator, 0.5-2 parts of accelerator and 350-400 parts of quartz sand powder.
Preferably, the ratio of the initiator to the accelerator is adjusted according to the air temperature, the ratio of the initiator to the accelerator is reduced when the air temperature is high, and the ratio of the initiator to the accelerator is increased when the air temperature is low; the proportion of the quartz sand powder is adjusted according to the thickness degree of the polymer concrete, the proportion of the quartz sand powder is increased when the polymer concrete is thin and wet, and the proportion of the quartz sand powder is reduced when the polymer concrete is thick.
The second technical problem of the present invention is to provide the following advantages:
1. the pile head repairing and reinforcing method does not change the original structure of the pile head, does not fill the cavity of the tubular pile, and directly sleeves a pile cap on the pile head, so that the core filling at the top of the pile head or the bottom sealing of the cavity at the bottom of the tubular pile in later engineering can be normally carried out;
2. the polymer concrete has high strength and good toughness, and the inner and outer steel pipes wrap the pile head concrete, so that the anti-impact performance of the pile head can be improved, and the smooth operation of subsequent pile sinking is ensured.
3. The invention has simple operation and high working efficiency and can reduce the economic loss caused by the damaged pile head.
Drawings
The invention will be further described with reference to the following examples with reference to the accompanying drawings.
Fig. 1 is a perspective view of a pile cap for repairing and reinforcing a concrete pipe pile head.
Fig. 2 is a cross-sectional view of a repair state of the concrete pipe pile head repair reinforcement of the present invention.
The symbols are as follows:
a pile cap 1; an annular end plate 2; an outer sleeve 3; an inner sleeve 4; a waist-shaped connecting hole 5; a pile head 6; a main rib 7; a cavity 8.
Detailed Description
Firstly, a pile cap 1 with the same specification as the pile head 6 is manufactured.
Referring to detail fig. 1 and 2, a pile cap 1 for repairing and reinforcing a pile head 6 of a concrete pipe pile comprises an annular end plate 2, an outer sleeve 3, an inner sleeve 4 and a kidney-shaped connecting hole 5, wherein the outer sleeve 3 is sleeved on the outer side surface of the annular end plate 2, the inner sleeve 4 is sleeved on the inner side surface of the annular end plate 2, the kidney-shaped connecting hole 5 is arranged on the annular end plate 2, and the end surface of the outer sleeve 3 is lower than the end surface of the annular end plate 2.
When the pile cap 1 is manufactured, the outer diameter of the annular end plate 2 is 2-5 mm larger than that of a pipe pile to be repaired, and the inner hole diameter of the annular end plate 2 is 5-10 mm smaller than that of a pipe pile cavity 8 to be repaired. The inner diameter of the outer sleeve 3 is 2-5 mm larger than the outer diameter of the tubular pile to be repaired, the length of the outer sleeve can be 300-500 mm according to the difficult and easy condition of engineering construction, the outer diameter of the inner sleeve 4 is 5-10 mm smaller than the cavity 8 of the tubular pile to be repaired, and the length of the inner sleeve can be 200-400 mm according to the difficult and easy condition of engineering construction.
Secondly, the pile cap 1 is arranged on the damaged pile head 6 according to the following steps by utilizing a method for repairing and reinforcing the pile head 6 of the concrete pipe pile.
Step 10, sawing the damaged pile head 6 to be flat at the deepest part of the damage, then circularly sawing the top of the pile head 6 to the main rib 7 for a circle, knocking off the concrete of the upper pile body, and exposing 20-30 mm of the main rib 7;
step 20, after the pile head 6 is cleaned, pile caps 1 with the same specification are sleeved on the pile head 6, the pile caps 1 are the pile caps 1 in claim 1 or claim 2, then the lower sections of outer sleeves 3 of the pile caps 1 are sleeved on the outer side walls of the pile head 6, the lower sections of inner sleeves 4 of the pile caps 1 are sleeved on the inner walls of the cavities 8, the main ribs 7 are aligned with the waist-shaped connecting holes 5, and the distance between the annular end plates 2 and the concrete on the top of the pile head 6 is 10-20 mm;
step 30, knocking the pile cap 1 to enable the annular end plate 2 to descend to be tightly attached to the pile head 6, and adjusting the pile cap 1 to be horizontal;
step 40, welding the main ribs 7 on the kidney-shaped connecting holes 5 corresponding to the annular end plates 2 one by one;
50, plugging and stopping leakage of a contact ring between the lower edge of the outer sleeve 3 and the outer side wall of the pile body and a contact ring between the lower edge of the inner sleeve 4 and the inner wall of the cavity 8 by using a slightly wet clay ball;
step 60, preparing polymer concrete for repairing and reinforcing, pouring the polymer concrete onto the pile head 6 from the middle of the annular end plate 2, tapping the outer sleeve 3 while pouring to discharge air so as to ensure that the polymer concrete fills the gap between the pile cap 1 and the pile head 6 concrete, blocking the gap between the outer sleeve 3 and the pile body and the gap between the inner sleeve 4 and the pile body in time if the polymer concrete leaks, and normally driving a sunk pile after the polymer concrete is completely hardened.
The polymer concrete comprises the following components in percentage by mass: 180-220 parts of polyester resin, 2-4 parts of initiator, 0.5-2 parts of accelerator and 350-400 parts of quartz sand powder, wherein the ratio of the initiator to the accelerator is adjusted according to the air temperature, the ratio of the initiator to the accelerator is reduced when the air temperature is high, and the ratio of the initiator to the accelerator is increased when the air temperature is low; the proportion of the quartz sand powder is adjusted according to the thickness degree of the polymer concrete, the proportion of the quartz sand powder is increased when the polymer concrete is thin and wet, and the proportion of the quartz sand powder is reduced when the polymer concrete is thick.
Although specific embodiments of the invention have been described above, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the appended claims.
Claims (4)
1. A method for repairing and reinforcing a pile head of a concrete pipe pile is characterized by comprising the following steps: the method comprises the following steps:
step 10, sawing the damaged pile head flat at the deepest part of the damaged pile head, then circularly sawing the pile head from the top to the main rib for a circle, knocking off the concrete of the upper pile body, and exposing the main rib for 20-30 mm;
step 20, after the pile head is cleaned, pile caps with the same specification are sleeved on the pile head, each pile cap comprises an annular end plate and an outer sleeve, the outer sleeve is sleeved on the outer side face of the annular end plate, the pile cap further comprises a waist-shaped connecting hole and an inner sleeve, the waist-shaped connecting hole is formed in the position, where the annular end plate repairs the main ribs of the pipe pile as required, of the annular end plate, and the inner sleeve is sleeved on the inner side face of the annular end plate; then, the lower section of the outer sleeve of the pile cap is sleeved on the outer side wall of the pile head, the lower section of the inner sleeve of the pile cap is sleeved on the inner wall of the cavity, and the main rib is aligned with the waist-shaped connecting hole;
step 30, knocking the pile cap to enable the annular end plate to descend to be tightly attached to the pile head, and adjusting the pile cap to be horizontal;
step 40, welding the main ribs on the waist-shaped connecting holes corresponding to the annular end plates one by one;
50, plugging and sealing the contact ring between the lower edge of the outer sleeve and the outer side wall of the pile body and the contact ring between the lower edge of the inner sleeve and the inner wall of the cavity by using a slightly wet clay ball to prevent leakage;
and step 60, preparing polymer concrete for repairing and reinforcing, pouring the polymer concrete onto the pile head from the middle of the annular end plate, tapping the outer sleeve while pouring to discharge air so as to ensure that the polymer concrete fills the gap between the pile cap and the pile head concrete, blocking in time if the seams between the outer sleeve and the inner sleeve and the pile body are leaked, and normally driving the pile after the polymer concrete is completely hardened.
2. The method for repairing and reinforcing the pile head of the concrete pipe pile according to claim 1, wherein the method comprises the following steps: in the step 20, the distance between the annular end plate and the concrete at the top of the pile head is 10-20 mm.
3. The method for repairing and reinforcing the pile head of the concrete pipe pile according to claim 1, wherein the method comprises the following steps: in the step 60, the polymer concrete comprises the following components in percentage by mass: 180-220 parts of polyester resin, 2-4 parts of initiator, 0.5-2 parts of accelerator and 350-400 parts of quartz sand powder.
4. The method for repairing and reinforcing the pile head of the concrete pipe pile according to claim 3, wherein the method comprises the following steps: the ratio of the initiator to the accelerator is adjusted according to the air temperature, the ratio of the initiator to the accelerator is reduced when the air temperature is high, and the ratio of the initiator to the accelerator is increased when the air temperature is low; the proportion of the quartz sand powder is adjusted according to the thickness degree of the polymer concrete, the proportion of the quartz sand powder is increased when the polymer concrete is thin and wet, and the proportion of the quartz sand powder is reduced when the polymer concrete is thick.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711443438.7A CN108149685B (en) | 2017-12-27 | 2017-12-27 | Method for repairing and reinforcing pile head of concrete pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711443438.7A CN108149685B (en) | 2017-12-27 | 2017-12-27 | Method for repairing and reinforcing pile head of concrete pipe pile |
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| CN108149685A CN108149685A (en) | 2018-06-12 |
| CN108149685B true CN108149685B (en) | 2020-11-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109183791A (en) * | 2018-09-10 | 2019-01-11 | 福建宝丰管桩有限公司 | A kind of tubular pile head method for repairing damage |
| CN109706923A (en) * | 2018-12-28 | 2019-05-03 | 中国二十冶集团有限公司 | Tubular pile splicing device and method |
| CN110206021B (en) * | 2019-05-22 | 2020-07-14 | 河海大学 | Prestressed light pile for quickly anchoring emergency bridge inhaul cable and construction method |
| CN114232604B (en) * | 2021-12-15 | 2023-07-07 | 深圳市基础工程有限公司 | Reinforced pile cap of pile head of pipe pile and construction method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101748759B (en) * | 2009-12-16 | 2011-02-09 | 江苏建华管桩有限公司 | Method for strengthening and repairing tubular pile head |
| CN107503346A (en) * | 2016-06-14 | 2017-12-22 | 五冶集团上海有限公司 | PHC tubular pile head method for repairing damage |
| CN207794072U (en) * | 2017-12-27 | 2018-08-31 | 福建省大地管桩有限公司 | A kind of pile cover of pipe of concrete pile head repairing and reinforcement |
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