CN210857202U - Broken pile and pile connecting structure of cast-in-situ bored pile - Google Patents
Broken pile and pile connecting structure of cast-in-situ bored pile Download PDFInfo
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- CN210857202U CN210857202U CN201921455810.0U CN201921455810U CN210857202U CN 210857202 U CN210857202 U CN 210857202U CN 201921455810 U CN201921455810 U CN 201921455810U CN 210857202 U CN210857202 U CN 210857202U
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Abstract
The utility model discloses a bored concrete pile broken pile extension structure, include the three restoration hole of establishing of boring perpendicularly from bored concrete pile top, the degree of depth in three restoration hole surpasss the degree of depth of broken joint, and the slip casting pipe is installed on the top of restoration hole, installs the high-pressure pipe valve on the slip casting pipe, and hole sealing layer hole sealing is passed through in the space between slip casting pipe and the restoration hole, and the week side that lies in the broken joint in the ground forms not hard up district, and the grout hose forms the spliced pole to the intraductal grout of pouring into of slip casting, and grout flows into not hard up district and forms the reinforcement festival through the broken joint. The utility model discloses only boring perpendicularly from drilling bored concrete pile bolck and establishing and play three restoration hole, utilize clear hole of intercommunication characteristics and slip casting between two liang of restoration holes, the cyclicity is good, and grout flows into not hard up district and forms the reinforcement festival through the broken joint, and the pile extension is simple and the pile extension is comprehensive, and is little to the influence of whole drilling bored concrete pile, and the time limit for a project is short, and is with low costs, avoids a large amount of artifical consumptions, and the security is good.
Description
Technical Field
The utility model belongs to the technical field of bored concrete pile broken pile extension, concretely relates to bored concrete pile broken pile extension structure.
Background
The cast-in-situ bored pile has the advantages of high construction speed, small occupied area, strong adaptability to various soil layers, high bearing capacity and the like, and is widely applied to various pile foundation projects. Due to the influence of a plurality of factors such as geological conditions, construction management and the like, broken piles sometimes occur when the cast-in-situ bored piles are poured, and the common mode for treating broken piles of the cast-in-situ bored piles is as follows: firstly, in-situ piling: the method has the advantages that the method is good in effect, large in difficulty, long in period and high in cost, and can be selected and adopted according to factors such as the importance of a project, geological conditions, the number of defects and the like; second, "pick shoulder pole" formula pile extension: two piles are additionally arranged on two sides of the broken pile respectively, pile tops are connected through bearing platforms, and the scheme can change the structural form of the pile foundation; thirdly, a scheme of a sinking steel casing: the method is characterized in that a steel pile casing with the diameter larger than that of a broken pile is adopted, the steel pile casing is pressed below the position of the broken pile at the position of the broken pile, original broken pile concrete is manually dug out, and concrete is poured again. Fourthly, pile core sinking: the method is characterized in that a pneumatic pick is adopted to chisel a well with the diameter of 80cm in the center of a defective pile, the depth at least exceeds the depth of the defective part, then the sediment is sealed and cleaned, a reinforcement cage is placed, and the expansive concrete is poured by a hole digging concrete construction method.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem lie in not enough to above-mentioned prior art, provide a bored concrete pile broken string pile splicing structure, its novel in design is reasonable, only bore from bored concrete pile bolck vertical and establish three restoration hole, utilize clear hole of intercommunication characteristics and slip casting between two liang of restoration holes, the circularity is good, grout flows into not hard up district and forms the reinforcement festival through the crack, the pile extension is simple and the pile extension is comprehensive, little to the influence of whole bored concrete pile, short time limit for a project, low cost, avoid a large amount of artifical consumptions, the security is good, and the convenient for uses widely.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a drilling bored concrete pile broken pile extension structure which characterized in that: the cast-in-situ bored pile comprises a first repairing hole, a second repairing hole and a third repairing hole vertically drilled from the top of a bored cast-in-situ pile, wherein the depth of the first repairing hole, the depth of the second repairing hole and the depth of the third repairing hole exceed the depth of a broken joint, a first grouting pipe extending into the first repairing hole is installed at the top end of the first repairing hole, a first high-pressure pipe valve is installed on a pipe section of the first grouting pipe extending out of the first repairing hole, a second grouting pipe extending into the second repairing hole is installed at the top end of the second repairing hole, a second high-pressure pipe valve is installed on a pipe section of the second grouting pipe extending out of the second repairing hole, a third grouting pipe extending into the second repairing hole is installed at the top end of the third repairing hole, a third high-pressure pipe valve is installed on a pipe section of the third grouting pipe extending out of the third repairing hole, a gap between the first grouting pipe and the first repairing hole, a gap between the second grouting pipe and the second repairing hole, a gap between the second grouting pipe and the third repairing hole, And the space between third slip casting pipe and the third restoration hole all passes through hole sealing layer hole sealing, and the subaerial high pressure water pump and the high-pressure grouting pump that is provided with of drilling bored concrete pile side, and the water injection pipe passes through high pressure water pump and slip casting pipe cooperation, and the slip casting hose passes through high-pressure grouting pump and slip casting pipe cooperation, lies in the week side formation of crack in the ground and becomes flexible district, and the grout formation spliced pole of slip casting hose to the intraductal injection of slip casting, grout flows into not flexible district and forms the reinforcement festival through the crack.
Foretell a drilling bored concrete pile structure of splicing, its characterized in that: the depth of the first repairing hole, the depth of the second repairing hole and the depth of the third repairing hole are all 30-50 cm deeper than the depth of the broken seam.
Foretell a drilling bored concrete pile structure of splicing, its characterized in that: the length of the first grouting pipe, the length of the second grouting pipe and the length of the third grouting pipe are all 50-100 cm.
Foretell a drilling bored concrete pile structure of splicing, its characterized in that: the first repairing hole, the second repairing hole and the third repairing hole are uniformly distributed in the cast-in-situ bored pile around the central axis of the cast-in-situ bored pile.
Foretell a drilling bored concrete pile structure of splicing, its characterized in that: the aperture of the first repairing hole, the aperture of the second repairing hole and the aperture of the third repairing hole are all 8-10 cm.
Foretell a drilling bored concrete pile structure of splicing, its characterized in that: the cement paste is superfine cement paste, the grain diameter of the superfine cement in the superfine cement paste is 0.2-20 mu m, and the average grain diameter of the superfine cement in the superfine cement paste is 5-6 mu m.
Compared with the prior art, the utility model has the following advantage:
1. the utility model discloses a set up three restoration hole, and every restoration hole top is all inserted the slip casting pipe, the slip casting pipe is only as high pressure water pump and high pressure grouting pump to the connecting piece of restoration hole water injection or slip casting, do not deepen to the hole bottom in restoration hole, avoid the slip casting in-process to the continuous drawing of slip casting pipe and to the continuous exhaust in restoration hole, and three restoration hole is through the mutual intercommunication of broken joint, the connectivity realization that utilizes three restoration hole is to restoration hole, broken joint and not hard up district washing and slip casting, good cyclicity, convenient to popularize and use.
2. The utility model discloses lie in the ground and the broken joint intercommunication of broken joint week side, to broken joint and the abluent in-process of three restoration hole, the soil property and the rubble that lie in the week side of broken joint in the ground can be taken away equally, the realization is to the thorough cleaning in restoration hole, broken joint and not hard up district, and the cleaning performance is good.
3. The utility model discloses the water injection pipe passes through high-pressure water pump and slip casting pipe cooperation, and the slip casting hose passes through high-pressure grouting pump and slip casting pipe cooperation, and the grout of slip casting hose to the intraductal injection of slip casting forms the spliced pole, the grout flows into not hard up district and forms the reinforcement festival through the broken joint, and two sections bored concrete piles about the broken joint of high-pressure cement intercommunication as an organic whole that solidifies in spliced pole, reinforcement festival and the broken joint, and the pile extension is simple and the pile extension is comprehensive, and is little to the influence of whole drilling bored concrete pile, and the time limit for a project is short, and is with low costs, avoids a large amount of artifical consumpti.
To sum up, the utility model relates to a novel reasonable only bores perpendicularly from drilling bored concrete pile top and establishes and beat three restoration hole, utilizes clear hole of intercommunication characteristics and slip casting between two liang of restoration holes, and the cyclicity is good, and grout flows into not hard up district and forms the reinforcement festival through the broken joint, and the pile extension is simple and the pile extension is comprehensive, and is little to the influence of whole drilling bored concrete pile, and the time limit for a project is short, and is with low costs, avoids a large amount of artifical consumptions, and the security is good, convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention without grouting.
Fig. 2 is the utility model discloses structural schematic after slip casting.
Fig. 3 is the utility model discloses the relation of laying schematic diagram of drilling bored concrete pile bolck that first restoration hole, second restoration hole and third restoration hole were located.
Description of reference numerals:
1-foundation; 2-bored pile; 3, breaking the seam;
4-first repair hole; 5-second repair hole; 6-third repair hole;
7-a first grouting pipe; 8-a second grouting pipe; 9-a third grouting pipe;
10-a first high-pressure pipe valve; 11-a second high-pressure pipe valve; 12-third high pressure pipe valve;
13-a hole sealing layer; 14-a water injection pipe; 15-high pressure water pump;
16-a loosening zone; 17-reinforcing section; 18-connecting column;
19-grouting hose; 20-high pressure grouting pump.
Detailed Description
As shown in fig. 1 to 3, the bored pile broken pile extension structure according to the present invention includes a first repair hole 4, a second repair hole 5, and a third repair hole 6 drilled vertically from the pile top of a bored pile 2, wherein the depth of the first repair hole 4, the depth of the second repair hole 5, and the depth of the third repair hole 6 all exceed the depth of a fracture 3, a first grouting pipe 7 extending into the first repair hole 4 is installed at the top end of the first repair hole 4, a first high pressure pipe valve 10 is installed on the pipe section of the first grouting pipe 7 extending out of the first repair hole 4, a second grouting pipe 8 extending into the second repair hole 5 is installed at the top end of the second repair hole 5, a second high pressure pipe valve 11 is installed on the pipe section of the second grouting pipe 8 extending out of the second repair hole 5, a third grouting pipe 9 extending into the second repair hole 5 is installed at the top end of the third repair hole 6, and a third grouting pipe 12 is installed on the pipe section of the third repair hole 6, the space between first slip casting pipe 7 and the first hole of restoreing 4, the space between second slip casting pipe 8 and the second hole of restoreing 5, and the space between third slip casting pipe 9 and the third hole of restoreing 6 all through the hole sealing layer 13 hole sealing, the subaerial high pressure water pump 15 and the high pressure grouting pump 20 that is provided with of drilling bored concrete pile 2 side, water injection pipe 14 passes through high pressure water pump 15 and slip casting pipe cooperation, slip casting hose 19 passes through high pressure grouting pump 20 and slip casting pipe cooperation, lie in the week side formation not hard up district 16 of broken joint 3 in the ground 1, slip casting hose 19 forms spliced pole 18 to the grout intraductal grout that injects into of slip casting, grout flows into not hard up district 16 and forms reinforced section 17 through broken joint 3.
It should be noted that, by arranging three repairing holes, and inserting a grouting pipe at the top end of each repairing hole, the grouting pipe is only used as a connecting piece for injecting water or grouting into the repairing hole by the high-pressure water pump 15 and the high-pressure grouting pump 20, and does not go deep to the bottom of the repairing hole, continuous pulling of the grouting pipe and continuous exhaust of the repairing hole in the grouting process are avoided, the three repairing holes are mutually communicated through the broken joint 3, cleaning and grouting of the repairing hole, the broken joint and the loosening area are realized by utilizing the connectivity of the three repairing holes, and the circulation is good; rock soil on the peripheral side of the broken joint 3 is communicated with the broken joint 3, soil and broken stones on the peripheral side of the broken joint 3 in the foundation 1 can be taken away in the process of cleaning the broken joint 3 and the three repairing holes, the broken joint and the loosening area can be thoroughly cleaned, and the cleaning effect is good; the cooperation of water injection pipe 14 through high-pressure water pump 15 and slip casting pipe, slip casting hose 19 passes through high-pressure grouting pump 20 and slip casting pipe cooperation, and slip casting hose 19 forms spliced pole 18 to the intraductal grout that injects of slip casting, grout flows into not hard up district 16 and forms reinforcement festival 17 through the crack 3, and two sections bored concrete piles about spliced pole, reinforcement festival 17 and the crack 3 internal fixation's high-pressure cement intercommunication is two sections bored concrete piles as an organic whole connection crack, and the pile that connects is simple and connect is comprehensive, and is little to the influence of whole drilling bored concrete pile, and the time limit for a project is short, and is with low costs, avoids a large amount of artifical consumptions, and the security is.
In this embodiment, the depth of the first repair hole 4, the depth of the second repair hole 5, and the depth of the third repair hole 6 are each 30cm to 50cm deeper than the depth of the fracture 3.
The depth of the first repairing hole 4, the depth of the second repairing hole 5 and the depth of the third repairing hole 6 are 30 cm-50 cm deeper than the depth of the broken joint 3, so that the formed connecting column 18 penetrates through the upper and lower sections of the cast-in-place piles of the broken joint 3, and the connecting column 18, the reinforcing joint 17 and the high-pressure cement solidified in the broken joint 3 are communicated into a whole to connect the upper and lower sections of the cast-in-place piles of the broken joint 3, and the pile connecting effect is good.
In this embodiment, the length of the first grouting pipe 7, the length of the second grouting pipe 8, and the length of the third grouting pipe 9 are all 50cm to 100 cm.
It should be noted that the length of the first grouting pipe 7, the length of the second grouting pipe 8, and the length of the third grouting pipe 9 are all 50cm to 100cm, and are only used as connectors for injecting water or grouting into the repair hole by the high-pressure water pump 15 and the high-pressure grouting pump 20, one half of the grouting pipes extend into the repair hole to be connected with the repair hole, the repair hole is sealed, and the other half of the grouting pipes extend out of the repair hole to be provided with the high-pressure pipe valve.
In this embodiment, the first repairing hole 4, the second repairing hole 5 and the third repairing hole 6 are uniformly distributed in the cast-in-situ bored pile 2 around the central axis of the cast-in-situ bored pile 2.
It should be noted that the first repairing hole 4, the second repairing hole 5 and the third repairing hole 6 are uniformly distributed in the cast-in-situ bored pile 2 around the central axis of the cast-in-situ bored pile 2, so that the repairing holes can uniformly clean and grout the broken joint 3 and the loose area, and the circulation is good.
In this embodiment, the aperture of the first repair hole 4, the aperture of the second repair hole 5, and the aperture of the third repair hole 6 are all 8cm to 10 cm.
The aperture of the first repairing hole 4, the aperture of the second repairing hole 5 and the aperture of the third repairing hole 6 are all 8 cm-10 cm, the hole is small, the influence on the whole cast-in-situ bored pile is small, and the construction period is short.
In the embodiment, the cement slurry is an ultrafine cement slurry, the particle size of the ultrafine cement in the ultrafine cement slurry is 0.2-20 μm, and the average particle size of the ultrafine cement in the ultrafine cement slurry is 5-6 μm.
The superfine cement slurry comprises the following components in parts by weight: 100 parts of superfine cement, 0.6-2.0 parts of fluid loss additive, 0.05-0.3 part of retarder hydroxyl-fork diphosphonic acid, 0.4 part of dispersing agent, 0.4 part of defoamer tributyl phosphate and 76 parts of water, wherein the superfine cement is GM8000 superfine cement, and the fluid loss additive is DSJ-S fluid loss additive; the cement paste adopts superfine cement paste, so that the micro pores of the broken joint 3 can be effectively blocked, and common cement paste with large particle size is avoided, so that the cement paste is not easy to enter the broken joint 3.
In this embodiment, the water pressure of the high-pressure water pump 15 for injecting high-pressure water into the first grouting pipe 7, the second grouting pipe 8, and the third grouting pipe 9 is 3MPa to 5 MPa.
In this embodiment, the pressure of the high-pressure grouting pump 20 injecting the high-pressure cement slurry into the first grouting pipe 7, the second grouting pipe 8, and the third grouting pipe 9 is 3MPa to 5 MPa.
When the utility model is implemented, three repairing holes with the depth of 30 cm-50 cm below the depth of the broken joint 3 are drilled at the pile top of the cast-in-situ bored pile 2, and the three repairing holes are respectively a first repairing hole 4, a second repairing hole 5 and a third repairing hole 6; the aperture of the first repairing hole 4, the aperture of the second repairing hole 5 and the aperture of the third repairing hole 6 are all 8-10 cm; the first repairing hole 4, the second repairing hole 5 and the third repairing hole 6 are uniformly distributed in the cast-in-situ bored pile 2 around the central axis of the cast-in-situ bored pile 2;
installing a first grouting pipe 7 extending into the first repairing hole 4 at the top end of the first repairing hole 4, installing a first high-pressure pipe valve 10 on a pipe section of the first grouting pipe 7 extending out of the first repairing hole 4, installing a second grouting pipe 8 extending into the second repairing hole 5 at the top end of the second repairing hole 5, installing a second high-pressure pipe valve 11 on a pipe section of the second grouting pipe 8 extending out of the second repairing hole 5, installing a third grouting pipe 9 extending into the second repairing hole 5 at the top end of the third repairing hole 6, installing a third high-pressure pipe valve 12 on a pipe section of the third grouting pipe 9 extending out of the third repairing hole 6, and enabling a gap between the first grouting pipe 7 and the first repairing hole 4, a gap between the second grouting pipe 8 and the second repairing hole 5 and a gap between the third grouting pipe 9 and the third repairing hole 6 to pass through a hole sealing layer 13;
the length of the first grouting pipe 7, the length of the second grouting pipe 8 and the length of the third grouting pipe 9 are all 50-100 cm;
then, cleaning the hole at high pressure, namely closing a third high-pressure pipe valve 12, opening a first high-pressure pipe valve 10 and a second high-pressure pipe valve 11, installing a water injection pipe 14 on the first grouting pipe 7, injecting high-pressure water into the first grouting pipe 7 by a high-pressure water pump 15, cleaning the broken joint 3 and the loose area 16, allowing the high-pressure water to overflow from the second grouting pipe 8 until the second grouting pipe 8 overflows clear water, detaching the water injection pipe 14 on the first grouting pipe 7 and installing the water injection pipe on the second grouting pipe 8, injecting high-pressure water into the second grouting pipe 8 by the high-pressure water pump 15, cleaning the broken joint 3 and the loose area 16, allowing the high-pressure water to overflow from the first grouting pipe 7, and closing the high-pressure water pump 15 until the first grouting pipe 7 overflows;
closing the first high-pressure pipe valve 10, opening the third high-pressure pipe valve 12 and the second high-pressure pipe valve 11, installing the water injection pipe 14 on the second grouting pipe 8, injecting high-pressure water into the second grouting pipe 8 by the high-pressure water pump 15, cleaning the broken joint 3 and the loosening region 16, enabling the high-pressure water to overflow from the third grouting pipe 9 until the third grouting pipe 9 overflows clear water, detaching the water injection pipe 14 on the second grouting pipe 8 and installing the water injection pipe on the third grouting pipe 9, injecting high-pressure water into the third grouting pipe 9 by the high-pressure water pump 15, cleaning the broken joint 3 and the loosening region 16, enabling the high-pressure water to overflow from the second grouting pipe 8 until the second grouting pipe 8 overflows the clear water, and closing the high-pressure water pump 15;
closing the second high-pressure pipe valve 11, opening the first high-pressure pipe valve 10 and the third high-pressure pipe valve 12, installing a water injection pipe 14 on the third grouting pipe 9, injecting high-pressure water into the third grouting pipe 9 by a high-pressure water pump 15, cleaning the broken joint 3 and the loosening region 16, enabling the high-pressure water to overflow from the first grouting pipe 7 until the first grouting pipe 7 overflows clear water, detaching the water injection pipe 14 on the third grouting pipe 9 and installing the water injection pipe on the first grouting pipe 7, injecting high-pressure water into the first grouting pipe 7 by the high-pressure water pump 15, cleaning the broken joint 3 and the loosening region 16, enabling the high-pressure water to overflow from the third grouting pipe 9 until the third grouting pipe 9 overflows the clear water, and closing the high-pressure water pump 15; by analogy, when the first grouting pipe 7, the second grouting pipe 8 and the third grouting pipe 9 overflow clear water, hole cleaning is completed;
then high-pressure grouting is carried out, and the process is as follows: opening a first high-pressure pipe valve 10, a second high-pressure pipe valve 11 and a third high-pressure pipe valve 12, installing a grouting hose 19 on the first grouting pipe 7, injecting high-pressure cement slurry into the first grouting pipe 7 by a high-pressure grouting pump 20 until pure cement slurry overflows from the second grouting pipe 8 and the third grouting pipe 9, then the grouting hose 19 on the first grouting pipe 7 is dismounted and mounted on the second grouting pipe 8, the high-pressure grouting pump 20 injects high-pressure cement slurry into the second grouting pipe 8 until pure cement slurry overflows from the first grouting pipe 7 and the third grouting pipe 9, then the grouting hose 19 on the second grouting pipe 8 is dismounted and mounted on the third grouting pipe 9, the high-pressure grouting pump 20 injects high-pressure cement slurry into the third grouting pipe 9 until pure cement slurry overflows from the first grouting pipe 7 and the second grouting pipe 8 until high-pressure cement slurry is injected into any one grouting pipe, and the other two grouting pipes overflow pure cement slurry;
quickly closing the second high-pressure pipe valve 11 and the third high-pressure pipe valve 12, installing a grouting hose 19 on the first grouting pipe 7, injecting high-pressure cement slurry into the first grouting pipe 7 by using a high-pressure grouting pump 20, and closing the first high-pressure pipe valve 10 when the amount of the cement slurry injected into the first grouting pipe 7 is greater than a cement slurry amount threshold value or the grouting pressure is greater than a grouting pressure threshold value or ground reverse grouting; opening a second high-pressure pipe valve 11, discharging high-pressure gas accumulated at the top end of a second grouting pipe 8, installing a grouting hose 19 on the second grouting pipe 8, injecting high-pressure cement slurry into the second grouting pipe 8 by using a high-pressure grouting pump 20, and closing the second high-pressure pipe valve 10 when the amount of the cement slurry injected into the second grouting pipe 8 is greater than a cement slurry amount threshold value or the grouting pressure is greater than a grouting pressure threshold value or ground reverse grouting; opening a third high-pressure pipe valve 12, discharging high-pressure gas accumulated at the top end of a third grouting pipe 9, installing a grouting hose 19 on the third grouting pipe 9, injecting high-pressure cement slurry into the third grouting pipe 9 by using a high-pressure grouting pump 20, and closing the third high-pressure pipe valve 10 when the amount of the cement slurry injected into the third grouting pipe 9 is greater than a cement slurry amount threshold value or the grouting pressure is greater than a grouting pressure threshold value or ground reverse grouting; completing high-pressure grouting until gas in the grouting pipe is exhausted and the grouting amount is greater than a cement grouting amount threshold value or the grouting pressure is greater than a grouting pressure threshold value or ground reverse grouting;
high-pressure cement slurry flows into the loosening area 16 through the broken joint 3 to tightly compact the loosening area 16, the high-pressure cement in the loosening area 16 is solidified, the high-pressure cement solidified in the loosening area 16 forms a reinforcing joint 17, the high-pressure cement solidified in the first repairing hole 4, the second repairing hole 5 and the third repairing hole 6 respectively forms a connecting column 18 after the high-pressure cement solidified in the first repairing hole 4, the second repairing hole 5 and the third repairing hole 6 is solidified, the connecting column 18, the reinforcing joint 17 and the high-pressure cement solidified in the broken joint 3 are communicated into a whole to connect the upper section and the lower section of the broken joint 3, and the broken pile connection of the cast-in-situ bored pile 2 is completed.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (6)
1. The utility model provides a drilling bored concrete pile broken pile extension structure which characterized in that: the device comprises a first repairing hole (4), a second repairing hole (5) and a third repairing hole (6) which are vertically drilled from the top of a bored pile (2), wherein the depth of the first repairing hole (4), the depth of the second repairing hole (5) and the depth of the third repairing hole (6) exceed the depth of a broken joint (3), a first grouting pipe (7) extending into the first repairing hole (4) is installed at the top end of the first repairing hole (4), a first high-pressure pipe valve (10) is installed on a pipe section of the first grouting pipe (7) extending out of the first repairing hole (4), a second grouting pipe (8) extending into the second repairing hole (5) is installed at the top end of the second repairing hole (5), a second high-pressure pipe (11) is installed on a pipe section of the second grouting pipe (8) extending out of the second repairing hole (5), and a third grouting pipe (9) extending into the second repairing hole (5) is installed at the top end of the third repairing hole (6), a third high-pressure pipe valve (12) is installed on a pipe section of the third grouting pipe (9) extending out of the third repairing hole (6), a gap between the first grouting pipe (7) and the first repairing hole (4), a gap between the second grouting pipe (8) and the second repairing hole (5) and a gap between the third grouting pipe (9) and the third repairing hole (6) are sealed through a hole sealing layer (13), a high-pressure water pump (15) and a high-pressure grouting pump (20) are arranged on the ground beside the drilling grouting pile (2), a water injection pipe (14) is matched with the grouting pipe through the high-pressure water pump (15), a grouting hose (19) is matched with the grouting pipe through the high-pressure grouting pump (20), a loose area (16) is formed on the periphery side of the broken joint (3) in the foundation (1), and cement slurry injected into the grouting hose (19) to form a connecting column (18), the cement slurry flows into the loosening area (16) through the broken seam (3) and forms a reinforcing joint (17).
2. A bored pile-breaking and pile-connecting structure according to claim 1, characterized in that: the depth of the first repairing hole (4), the depth of the second repairing hole (5) and the depth of the third repairing hole (6) are 30-50 cm deeper than the depth of the broken joint (3).
3. A bored pile-breaking and pile-connecting structure according to claim 1, characterized in that: the length of the first grouting pipe (7), the length of the second grouting pipe (8) and the length of the third grouting pipe (9) are all 50-100 cm.
4. A bored pile-breaking and pile-connecting structure according to claim 1, characterized in that: the first repairing hole (4), the second repairing hole (5) and the third repairing hole (6) are uniformly distributed in the cast-in-situ bored pile (2) around the central axis of the cast-in-situ bored pile (2).
5. A bored pile-breaking and pile-connecting structure according to claim 1, characterized in that: the aperture of the first repairing hole (4), the aperture of the second repairing hole (5) and the aperture of the third repairing hole (6) are all 8-10 cm.
6. A bored pile-breaking and pile-connecting structure according to claim 1, characterized in that: the cement paste is superfine cement paste, the grain diameter of the superfine cement in the superfine cement paste is 0.2-20 mu m, and the average grain diameter of the superfine cement in the superfine cement paste is 5-6 mu m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921455810.0U CN210857202U (en) | 2019-09-03 | 2019-09-03 | Broken pile and pile connecting structure of cast-in-situ bored pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921455810.0U CN210857202U (en) | 2019-09-03 | 2019-09-03 | Broken pile and pile connecting structure of cast-in-situ bored pile |
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| CN210857202U true CN210857202U (en) | 2020-06-26 |
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| CN201921455810.0U Active CN210857202U (en) | 2019-09-03 | 2019-09-03 | Broken pile and pile connecting structure of cast-in-situ bored pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438986A (en) * | 2019-09-03 | 2019-11-12 | 机械工业勘察设计研究院有限公司 | A kind of breakage of cast-in-place bored pile pile splicing structure and method |
-
2019
- 2019-09-03 CN CN201921455810.0U patent/CN210857202U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110438986A (en) * | 2019-09-03 | 2019-11-12 | 机械工业勘察设计研究院有限公司 | A kind of breakage of cast-in-place bored pile pile splicing structure and method |
| CN110438986B (en) * | 2019-09-03 | 2023-08-25 | 机械工业勘察设计研究院有限公司 | Pile breaking and pile splicing structure and method for bored pile |
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