Underwater cast-in-place pile

Abstract

The underwater cast-in-place pile relates to the technical field of cast-in-place piles and comprises a bottom cylinder, the bottom end of the bottom cylinder is closed, a plurality of sleeves are sequentially stacked on the bottom cylinder, a reinforcement cage is placed on the bottom cylinder, inserting holes are formed in the sleeves in the vertical direction in a penetrating mode, communicating holes right opposite to the inserting holes are formed in the top face of the bottom cylinder, and an annular groove is formed in the bottom end of the inner side wall of the bottom cylinder. A water through hole communicated with the annular groove is formed in the bottom end of the side wall of the communicating hole, and an annular filter screen is fixed to a groove opening of the annular groove. Reinforcing holes are formed in the sleeve in the vertical direction in a penetrating mode, the multiple reinforcing holes are formed in the circumferential direction of the sleeve, bottom holes right facing the reinforcing holes are formed in the top face of the bottom cylinder, and reinforcing bars are inserted into the reinforcing holes and the bottom holes. By arranging the filter screen and the annular groove, water can be pumped while concrete is poured, the situation that the compactness of the concrete and the inner wall of the sleeve is affected by water seepage of the inner wall of the sleeve in the pouring process is avoided, and the structural strength is ensured; all the sleeves are reinforced through the reinforcing bars, and the strength of the pile body is improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of cast-in-place piles, in particular to an underwater cast-in-place pile. BACKGROUND

[0002] The cast-in-place pile is a pile formed by pouring concrete or reinforced concrete into a hole in place. The existing underwater cast-in-place pile pours a sufficient amount of concrete into a hopper and a guide pipe, then cuts the ball plug hanging rope to make the concrete rush to the base and spread around to form a concrete pile. In order to improve the integrity of the inner wall of the pile hole, a sleeve can be installed on the inner wall of the pile hole, and the sleeve is a prefabricated part.

[0003] The utility model discloses a kind of underwater cast-in-place piles, it includes guide pipe, anti-permeation concrete sleeve, foundation plate, reinforcement cage and self-compacting concrete column, anti-permeation concrete sleeve is sleeved in reinforcement cage outside, avoid reinforcement cage and river water or river bottom soft soil layer direct contact and be corroded, foundation plate is set on soft soil layer, and the connection strength between foundation plate and soft soil layer is strengthened, on the side of foundation plate and soft soil layer adhesion, a plurality of anti-skid rods are provided in soft soil layer, when self-compacting concrete is poured, reinforcement cage is inlaid in the self-compacting concrete column formed by pouring, and the integrity of underwater cast-in-place pile is strengthened.

[0004] For the related technology in the above, the inventor believes that the lower section of the cast-in-place pile is located in water, even if a sealing and waterproof structure is provided, water in the land is still easy to seep into the cast-in-place pile during actual implementation, water seeping into the cast-in-place pile during pouring cannot be pumped out, and the water seeping into the cast-in-place pile during pouring will affect the compactness of the concrete and the inner wall of the sleeve, resulting in a decrease in structural strength, which needs to be improved. UTILITY MODEL CONTENTS

[0005] The application provides an underwater cast-in-place pile, which facilitates pumping water from the inner bottom of the cast-in-place pile, avoids water seeping into the inner wall of the sleeve during pouring to affect the compactness of the concrete and the inner wall of the sleeve, and ensures the structural strength.

[0006] The application provides an underwater cast-in-place pile, which adopts the following technical scheme:

[0007] An underwater cast-in-place pile includes a bottom cylinder, the bottom end of the bottom cylinder is closed, a plurality of sleeves are sequentially stacked on the bottom cylinder, a reinforcement cage is placed on the bottom cylinder, an insertion hole is formed in the sleeve along the vertical direction, a communication hole opposite to the insertion hole is arranged on the top surface of the bottom cylinder, a ring groove is arranged at the bottom end of the inner side wall of the bottom cylinder, a water passage hole communicating with the ring groove is arranged at the bottom end of the side wall of the communication hole, and a ring-shaped filter screen is fixed to the slot opening of the ring groove.

[0008] By adopting the technical scheme, the water pipe is inserted into the insertion hole and the communication hole, the lower end of the water pipe is inserted into the bottom end of the communication hole, the water pump is started after the water pipe is connected to the water pump to pump water to the inner bottom edge of the bottom cylinder. The accumulated water passes through the filter screen in the ring groove, and then is pumped out by the water pipe through the communication of the water hole. When pouring concrete, the concrete cannot directly pass through the filter screen due to the viscous and dense characteristics, so the ring groove can still function to collect accumulated water, and water pumping can be performed at the same time as pouring concrete.

[0009] Optionally, reinforcing holes are provided in the sleeve along the vertical direction, a plurality of reinforcing holes are arranged along the circumference of the sleeve, the top surface of the bottom cylinder is provided with bottom holes opposite to the reinforcing holes, and steel bars are inserted into the reinforcing holes and the bottom holes.

[0010] By adopting the technical scheme, all the sleeves are reinforced by the steel bars to improve the strength of the pile body.

[0011] Optionally, the insertion hole has the same diameter as the reinforcing hole, and the communication hole has the same diameter as the bottom hole.

[0012] By adopting the technical scheme, the steel bars can also be inserted into the insertion hole and the communication hole. After the water pipe is pulled out after water pumping, another steel bar is inserted into the insertion hole and the communication hole, so that the steel bars are uniformly distributed along the circumference of the sleeve, and the strength of each position of the pile body in the circumferential direction is balanced.

[0013] Optionally, the top surface of the sleeve is provided with an annular marking groove, and the marking groove is located at the hole opening of the insertion hole.

[0014] By adopting the technical scheme, personnel can easily determine the position of the insertion hole through the marking groove, so as to insert the water pipe into the insertion hole.

[0015] Optionally, a positioning ring is fixed to the bottom end of the sleeve, the top surfaces of the sleeve and the bottom cylinder are provided with positioning grooves, and the shapes of the positioning grooves correspond to the positioning ring.

[0016] By adopting the technical scheme, the bottom cylinder and all the sleeves are vertically assembled together through the insertion of the positioning ring and the positioning grooves, so as to avoid relative displacement in the horizontal direction.

[0017] Optionally, a sealing ring is sleeved on the outer side wall of the positioning ring, and the outer side of the sealing ring is used to contact the inner wall of the positioning groove.

[0018] By adopting the technical scheme, the sealing ring is used to seal between the sleeve and the bottom cylinder and between adjacent sleeves.

[0019] Optionally, the inner bottom wall of the communication hole is a circular arc surface.

[0020] By adopting the technical scheme, the end surface of the water pipe is generally a plane, and the bottom end of the water pipe does not block the water flow when the bottom end contacts the inner bottom wall of the communication hole, so that the water pumping can be normally performed.

[0021] Optionally, the circular arc surface and the inner wall of the water passing hole are the same cylindrical surface, and the circular arc surface is extended from the hole wall of the water passing hole.

[0022] By adopting the technical scheme, the water passing hole is drilled on the inner wall of the bottom cylinder, and the circular arc surface is directly formed at the same time, so that the circular arc surface is conveniently formed.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. By arranging the filter screen and the annular groove, water pumping can be performed at the same time of pouring concrete, so that the water seepage in the inner wall of the sleeve during pouring does not affect the compactness of the concrete and the inner wall of the sleeve, and the structural strength is ensured.

[0025] 2. The steel bars are arranged to reinforce all the sleeves, so that the strength of the pile body is improved.

[0026] 3. Before pouring the concrete, the water pipe can be inserted into the insertion hole and the communication hole to continuously pump the water accumulated in the bottom of the bottom cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of an underwater pouring pile of the embodiment;

[0028] Figure 2 is a front sectional view of the embodiment;

[0029] Figure 3 is Figure 2 is a local enlarged view of

[0030] Figure 4 is a local exploded view of the embodiment.

[0031] Marked reference: 1, bottom cylinder; 2, sleeve; 3, steel cage; 21, positioning ring; 22, positioning groove; 23, sealing ring; 24, insertion hole; 11, communication hole; 12, annular groove; 13, water passing hole; 14, filter screen; 25, reinforcing hole; 15, bottom hole; 4, steel bar; 26, marking groove; 16, circular arc surface. DETAILED DESCRIPTION

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] Reference Figure 1 and Figure 2The embodiment discloses an underwater bored pile which comprises a bottom cylinder 1, the bottom end of the bottom cylinder 1 is closed, a plurality of sleeves 2 are sequentially stacked on the bottom cylinder 1, the sleeve 2 at the top end is located at the ground, and a steel reinforcement cage 3 is arranged on the bottom cylinder 1. The bottom cylinder 1 and the plurality of sleeves 2 serve as the support of the pile hole wall, the steel reinforcement cage 3 serves as the framework of the bored pile, after pouring the concrete into the bored pile, the concrete fills the space outside the steel reinforcement cage 3, and a solid pile body is formed after solidification.

[0034] With reference to Figure 2 and Figure 3 , the bottom end of the sleeve 2 is fixedly connected with a positioning ring 21, the top surface of the sleeve 2 and the bottom cylinder 1 is provided with a positioning groove 22, the shape of the positioning groove 22 corresponds to the positioning ring 21, the bottom cylinder 1 and all the sleeves 2 are vertically assembled together through the insertion of the positioning ring 21 and the positioning groove 22, and relative displacement in the horizontal direction is avoided. The outer side wall of the positioning ring 21 is sleeved with a sealing ring 23, the outer side of the sealing ring 23 is used for being in contact with the inner wall of the positioning groove 22, and the sealing ring 23 is used for sealing between the sleeve 2 and the bottom cylinder 1 and between adjacent sleeves 2. It should be noted that although the sealing ring 23 is arranged, the circumference of the sealing ring 23 is relatively long, and due to the limitation of assembly accuracy and installation gap, water leakage may occur at some positions of the sealing ring 23.

[0035] The sleeve 2 is provided with an insertion hole 24 penetrating in the vertical direction, the top surface of the bottom cylinder 1 is provided with a communication hole 11 opposite to the insertion hole 24, the inner side wall of the bottom cylinder 1 is provided with a ring groove 12 at the bottom end, the side wall of the communication hole 11 is provided with a water passage hole 13 in communication with the ring groove 12, and the slot of the ring groove 12 is fixedly connected with a ring-shaped filter screen 14. The insertion hole 24 and the communication hole 11 are used for inserting the water pipe on the ground, then the water pump is started to pump water to the inner bottom edge of the bottom cylinder 1 through the communication of the water passage hole 13 and the ring groove 12. The mesh size of the filter screen 14 is small, and it is appropriate that the concrete cannot pass through.

[0036] With reference to Figure 2 and Figure 4 , the sleeve 2 is provided with a reinforcing hole 25 penetrating in the vertical direction, a plurality of reinforcing holes 25 are arranged along the circumference of the sleeve 2, the top surface of the bottom cylinder 1 is provided with a bottom hole 15 opposite to the reinforcing hole 25, and a steel reinforcing bar 4 is inserted into the reinforcing hole 25 and the bottom hole 15. The steel reinforcing bar 4 is used for reinforcing all the sleeves 2, so that the strength of the pile body is improved.

[0037] The hole diameter of the insertion hole 24 is the same as that of the reinforcing hole 25, and the hole diameter of the communication hole 11 is the same as that of the bottom hole 15. In this way, the reinforcing bar 4 can also be inserted into the insertion hole 24 and the communication hole 11. After the water pipe is pulled out after pumping water, another reinforcing bar 4 is inserted into the insertion hole 24 and the communication hole 11, so that the reinforcing bar 4 is uniformly distributed along the circumference of the sleeve 2, and the strength of each position of the pile body is balanced to provide maximum reinforcement effect. The top surface of the sleeve 2 is provided with an annular marking groove 26, which is located at the opening of the insertion hole 24. Personnel can easily determine the position of the insertion hole 24 through the marking groove 26, so as to insert the water pipe into the insertion hole 24.

[0038] Referring to Figure 2 and Figure 3 The inner bottom wall of the communication hole 11 is a circular arc surface 16, and the end surface of the water pipe is generally a plane. By arranging the circular arc surface 16, when the bottom end of the water pipe contacts with the inner bottom wall of the communication hole 11, the water flow is not blocked, so that the water pumping can be normally carried out. Specifically, the circular arc surface 16 and the inner wall of the water passage hole 13 are the same cylindrical surface, and the circular arc surface 16 is extended from the hole wall of the water passage hole 13. The circular arc surface 16 is directly formed when the water passage hole 13 is drilled on the inner wall of the bottom cylinder 1, which is convenient for the arrangement of the circular arc surface 16.

[0039] The implementation principle of the underwater bored pile according to the embodiment of the present application is as follows: after the bottom cylinder 1 and the sleeve 2 of the bored pile are assembled in the pile hole, the reinforcement cage 3 is hoisted in, the water pipe is inserted into the insertion hole 24 and the communication hole 11, the lower end of the water pipe is inserted into the bottom end of the communication hole 11, the water pipe is connected to the water pump, and the water pump is started to pump water at the inner bottom edge of the bottom cylinder 1. The accumulated water passes through the filter screen 14 in the annular groove 12, and then is pumped out by the water pipe through the communication of the water passage hole 13.

[0040] When pouring concrete, the concrete cannot directly pass through the filter screen 14 due to its viscous and dense characteristics, so the annular groove 12 can still collect the accumulated water, and the water can be pumped out at the same time as the concrete is poured. As the amount of poured concrete increases, the pressure at the bottom of the concrete gradually increases to extrude through the filter screen 14, and the concrete fills the space in the annular groove 12. At this time, the water pipe starts to pump out the water mixed with the concrete, and at this time the water pipe can be removed, and the reinforcing bar 4 is inserted into the insertion hole 24 and the communication hole 11 for reinforcement.

[0041] It should be noted that before pouring concrete, the water pipe can also be inserted into the insertion hole 24 and the communication hole 11 to continuously pump the accumulated water in the inner bottom of the bottom cylinder 1.

[0042] The above are preferred embodiments of the present application, but do not limit the protection scope of the present application, therefore: any equivalent changes made on the basis of the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An underwater bored pile comprising a bottom cylinder (1), the bottom end of the bottom cylinder (1) being closed, a plurality of sleeves (2) being stacked on the bottom cylinder (1) in order, and a reinforcement cage (3) being placed on the bottom cylinder (1), characterized in that: The sleeve (2) is provided with a insertion hole (24) penetrating through in vertical direction, the top surface of the bottom cylinder (1) is provided with a communication hole (11) opposite to the insertion hole (24), the inner side wall bottom end of the bottom cylinder (1) is provided with a ring groove (12), the side wall bottom end of the communication hole (11) is provided with a water passing hole (13) communicating with the ring groove (12), and the ring groove (12) is fixed with a annular filter screen (14).

2. A cast-in-place pile for underwater use according to claim 1, characterized in that: The sleeve (2) is provided with a reinforcing hole (25) penetrating through in vertical direction, the reinforcing hole (25) is provided with a plurality of holes along the circumference of the sleeve (2), and the top surface of the bottom cylinder (1) is provided with a bottom hole (15) opposite to the reinforcing hole (25), and the reinforcing hole (25) and the bottom hole (15) are inserted with a steel bar (4).

3. A cast-in-place pile for underwater use according to claim 2, characterised in that: The hole diameter of the insertion hole (24) is same as that of the reinforcing hole (25), and the hole diameter of the communication hole (11) is same as that of the bottom hole (15).

4. A cast-in-place pile for underwater use according to claim 3, characterised in that: The top surface of the sleeve (2) is provided with a annular mark groove (26), and the mark groove (26) is located at the hole opening of the insertion hole (24).

5. A cast-in-place pile for underwater use according to claim 1, characterized in that: The bottom end of the sleeve (2) is fixed with a positioning ring (21), and the top surface of the sleeve (2) and the bottom cylinder (1) is provided with a positioning groove (22), and the shape of the positioning groove (22) corresponds to that of the positioning ring (21).

6. A cast-in-place pile for underwater use according to claim 5, characterised in that: The outer side wall of the positioning ring (21) is sleeved with a sealing ring (23), and the outer side of the sealing ring (23) is used for contacting the inner wall of the positioning groove (22).

7. A cast-in-place pile for underwater use according to claim 1, characterized in that: The inner bottom wall of the communication hole (11) is a circular arc surface (16).

8. A cast-in-place pile for underwater use according to claim 7, characterised in that: The circular arc surface (16) and the inner wall of the water passing hole (13) are same cylindrical surface, and the circular arc surface (16) is extended from the hole wall of the water passing hole (13). The circular arc surface (16) and the inner wall of the water passing hole (13) are same cylindrical surface, and the circular arc surface (16) is extended from the hole wall of the water passing hole (13).

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