Underwater cast-in-place pile pouring device and using method thereof

Abstract

The invention belongs to the technical field of bridge pile foundation construction, and discloses an underwater cast-in-place pile pouring device and a using method thereof. The underwater cast-in-place pile pouring device comprises a bearing plate, a guide pipe and a hoisting piece. Wherein the number of the guide pipes is two. The two guide pipes are arranged on the bearing plate in a spaced mode in the horizontal direction, pouring channels used for pouring concrete are formed in the guide pipes and are arranged in a penetrating mode in the vertical direction, first cutting openings are formed in the positions, close to the bottom ends of the pouring channels, of the opposite sides of the two guide pipes, and second cutting openings are formed in the positions, close to the bottom ends of the pouring channels, of the two guide pipes. Second cutting openings are formed in the opposite sides of the two guide pipes, the pouring channel communicates with the outside through the first cutting openings and the second cutting openings, and the hoisting piece is arranged on the bearing plate. The underwater cast-in-place pile pouring device is used in the using method of the underwater cast-in-place pile pouring device. Through the arrangement, the underwater cast-in-place pile pouring device can improve the construction efficiency and the pile forming quality.

Description

Technical Field

[0001] The invention relates to the technical field of bridge pile foundation construction, and in particular to an underwater bored pile casting device and a use method thereof. Background Art

[0002] Bored piles are widely used because of their simple construction equipment, easy operation and low cost. At present, bored piles are generally made by passing concrete mixture through the lower end of the conduit, and the concrete mixture will enter the initial poured concrete, so that the newly poured concrete will support the initial poured concrete to rise and expand to the surrounding area. During the pouring process of the pile foundation, the conduit is prone to blockage, which reduces the construction efficiency and pile quality, and easily causes broken piles. Summary of the invention

[0003] The purpose of the present invention is to provide an underwater bored pile casting device, which can improve the construction efficiency and pile quality.

[0004] To achieve this object, the present invention adopts the following technical solutions:

[0005] An underwater bored pile casting device, comprising:

[0006] Loading plate;

[0007] Two conduits are arranged on the bearing plate at intervals in the horizontal direction, a pouring passage for pouring concrete is arranged inside the conduit, the pouring passage is arranged through in the vertical direction, a first cutout is arranged on the opposite sides of the two conduits near the bottom end of the pouring passage, a second cutout is arranged on the opposite sides of the two conduits near the bottom end of the pouring passage, and the pouring passage is connected to the outside through the first cutout and the second cutout;

[0008] The hanging part is arranged on the bearing plate.

[0009] Optionally, the underwater bored pile casting device further includes a clamp, and the conduit is passed through the bearing plate and fixed on the bearing plate by the clamp.

[0010] Optionally, one of the conduits is provided with two clamps correspondingly, and the two clamps are provided on the outer peripheral wall of the conduit and respectively abut against two opposite sides of the bearing plate.

[0011] Optionally, the hanging member is a hanging ring, and two hanging rings are provided, and the two hanging rings are spaced apart and arranged on the bearing plate.

[0012] Optionally, the extending direction of the first section cut forms an angle of 60° with the horizontal direction, and the extending direction of the second section cut forms an angle of 30° with the horizontal direction.

[0013] The purpose of the present invention is to provide a method for using an underwater bored pile casting device, which can improve construction efficiency and pile quality.

[0014] To achieve this object, the present invention adopts the following technical solutions:

[0015] A method for using an underwater bored pile casting device, using the underwater bored pile casting device as described above, the method for using the underwater bored pile casting device comprising:

[0016] Step 1: Clean the site and measure the center point of the pile foundation;

[0017] Step 2: Drill holes according to the points in the center of the pile foundation, check the holes to see if they meet the hole opening index, and clean the holes;

[0018] Step 3: lower the steel cage and the conduit into the drilled hole so that the bottom end of the casting passage faces the bottom of the drilled hole;

[0019] Step 4: Before pouring concrete, test the slump of concrete to meet the slump index;

[0020] Step 5: pour concrete through one of the conduits, and lift the underwater pile pouring device through the lifting parts;

[0021] Step 6: When one of the conduits is blocked, concrete is poured through the other conduit to clear the blocked conduit.

[0022] Optionally, in step 2, the hole depth, hole diameter, hole shape and verticality of the drilled hole are detected by an ultrasonic bore detector, and when the hole depth, hole diameter, hole shape and verticality of the drilled hole meet the hole opening indicators, the hole is cleaned.

[0023] Optionally, in step three, the distance between the bottom end of the conduit and the bottom of the borehole is 300-500 mm.

[0024] Optionally, in step five, the position of the working surface for the initial pouring of concrete is one meter higher than the position of the bottom end of one of the conduits.

[0025] Optionally, during the concrete pouring process, the conduit is buried in the concrete to a depth of 2 to 6 m.

[0026] Beneficial effects of the present invention:

[0027] The present invention provides an underwater bored pile casting device, which includes a bearing plate, a conduit and a hoisting member. Among them, two conduits are provided. The two conduits are arranged on the bearing plate at intervals in the horizontal direction. By using the two conduits, the flexibility and construction efficiency of casting can be increased, and the risk of blockage of a single conduit can be reduced. A casting passage is arranged inside the conduit, and concrete can be cast into the bored hole of the bored pile in the vertical direction through the casting passage. Near the bottom end of the casting passage, the two conduits are provided with a first cutout on the opposite side, so that the concrete in the casting passage can flow out more easily through the first cutout and intersect between the two conduits. By placing the center between the two conduits at the center of the borehole, the accuracy of the concrete during the casting process is ensured. Near the bottom end of the casting passage, the two conduits are provided with a second cutout on the opposite side, thereby enhancing the outflow and diffusion effect of the concrete, thereby preventing the conduit from being blocked. The hoisting member is arranged on the bearing plate, so that the underwater bored pile casting device can be conveniently hoisted and moved, thereby adapting to different construction environments and requirements. Through the above arrangement, the underwater bored pile casting device of the present application can improve the construction efficiency and pile quality.

[0028] The present invention also provides a method for using an underwater bored pile casting device. First, the site is cleaned and the point position of the pile foundation center is measured to ensure that the construction area is clean and tidy and the accuracy of subsequent operations is improved, which is conducive to improving the quality of pile formation. Then, a hole is drilled according to the point position of the pile foundation center, and the hole is detected to meet the hole opening index and the hole is cleaned, providing a good foundation for subsequent concrete pouring and avoiding affecting the quality of concrete. After that, the steel cage and the conduit are lowered into the borehole so that the bottom end of the casting passage faces the bottom of the borehole, ensuring that the concrete is filled from the bottom of the borehole, and improving the density and uniformity of the pile. Then, before the concrete is poured, the slump of the concrete is tested to meet the slump index, ensuring that the concrete has good filling performance during the pouring process. Then, concrete is poured through one of the conduits, and the underwater bored pile casting device is lifted by the hoisting part to ensure that the concrete can flow into the borehole evenly and continuously, avoiding interruption or stagnation during the pouring process. When one of the conduits is blocked, concrete is poured through another conduit, and the blocked conduit is unblocked, so as to ensure that the pouring process is not interrupted. Through the above-mentioned configuration, the method for using the underwater bored pile casting device of the present application can improve the construction efficiency and pile quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic diagram of an underwater bored pile casting device provided by an embodiment of the present invention;

[0030] Figure 2 is a front view of an underwater bored pile casting device provided by an embodiment of the present invention;

[0031] Figure 3It is a flow chart of a method for using the underwater bored pile casting device provided in an embodiment of the present invention.

[0032] In the figure:

[0033] 1. Load-bearing plate; 2. Conduit; 21. Casting passage; 22. First cutting opening; 23. Second cutting opening; 3. Lifting parts; 4. Clamp. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] Bored piles are widely used because of their simple construction equipment, easy operation and low cost. At present, bored piles are generally made by passing concrete mixture through the lower end of the conduit, and the concrete mixture will enter the initially poured concrete, so that the newly poured concrete supports the initially poured concrete to rise and expand to the surrounding area. During the pouring process of the pile foundation, the conduit is prone to blockage, which in turn reduces the construction efficiency and pile quality, and easily causes broken piles. Therefore, there is an urgent need for an underwater bored pile casting device and a method of using the same to solve the above technical problems.

[0039] like Figure 1-Figure 3 As shown, this embodiment provides an underwater bored pile casting device, which includes a bearing plate 1, a conduit 2 and a hanging piece 3. Among them, there are two conduits 2. The two conduits 2 are arranged on the bearing plate 1 at intervals in the horizontal direction, and a casting passage 21 for casting concrete is arranged inside the conduit 2. The casting passage 21 is arranged through in the vertical direction. Near the bottom end of the casting passage 21, the two conduits 2 are provided with a first cutout 22 on the opposite side, and near the bottom end of the casting passage 21, the two conduits 2 are provided with a second cutout 23 on the opposite side. The casting passage 21 is connected to the outside through the first cutout 22 and the second cutout 23, and the hanging piece 3 is arranged on the bearing plate 1.

[0040] In this embodiment, two conduits 2 are provided. The two conduits 2 are arranged on the bearing plate 1 at intervals in the horizontal direction. By using two conduits 2, the flexibility and construction efficiency of pouring can be increased, and the risk of blockage of a single conduit 2 can be reduced. A pouring passage 21 is provided inside the conduit 2, and concrete can be poured into the bored hole of the cast-in-place pile in the vertical direction through the pouring passage 21. Near the bottom end of the pouring passage 21, the two conduits 2 are provided with a first cutout 22 on the opposite side, so that the concrete in the pouring passage 21 can flow out more easily through the first cutout 22 and intersect between the two conduits 2. By placing the center between the two conduits 2 at the center of the borehole, the accuracy of the concrete during the pouring process is ensured. Near the bottom end of the pouring passage 21, the two conduits 2 are provided with a second cutout 23 on the opposite side, thereby enhancing the outflow and diffusion effect of the concrete, thereby preventing the conduit 2 from being blocked. The hoisting member 3 is provided on the bearing plate 1, so that the underwater cast-in-place pile pouring device can be conveniently hoisted and moved, so as to adapt to different construction environments and needs. Through the above arrangement, the underwater bored pile casting device of this embodiment can improve the construction efficiency and pile quality.

[0041] It should be noted that, in this embodiment, the conduit 2 includes a plurality of tube bodies, which are all arranged in a vertical direction and are connected in sequence to form a pouring passage 21, thereby meeting the construction requirements of the length of the underwater cast-in-place pile, the quality of the pile, etc. Moreover, the tube body at the bottom is provided with a first cutout 22 and a second cutout 23, so that the concrete in the pouring passage 21 can be poured into the borehole through the tube body at the bottom.

[0042] The specific structure of the underwater bored pile casting device is described below:

[0043] Specifically, Figure 1 and Figure 2 As shown, the underwater bored pile casting device also includes a clamp 4, and the conduit 2 is passed through the bearing plate 1 and fixed on the bearing plate 1 through the clamp 4, so that the conduit 2 is more firmly fixed on the bearing plate 1, avoiding the shaking or displacement of the conduit 2 caused by concrete pressure or other external forces during the casting process. In addition, by providing the clamp 4, the connection between the conduit 2 and the bearing plate 1 is simpler and faster, reducing the time for installation and disassembly.

[0044] More specifically, one conduit 2 is provided with two clamps 4, which are arranged on the outer peripheral wall of the conduit 2 and respectively abut against the opposite sides of the bearing plate 1, so that the conduit 2 is more firmly fixed on the bearing plate 1, ensuring that the concrete can be accurately and evenly poured into the drilled hole, avoiding problems such as uneven pouring or broken piles due to shaking or displacement of the conduit 2.

[0045] Specifically, Figure 1 and Figure 2 As shown, the hoisting member 3 is a hoisting ring, and two hoisting rings are provided, and the two hoisting rings are spaced apart on the bearing plate 1, so that the underwater bored pile casting device is more stable during the hoisting process, and the shaking and tilting caused by single-point hoisting are reduced.

[0046] Specifically, the first cutout 22 and the second cutout 23 are both inclined at an acute angle to the horizontal direction. Figure 2 As shown, in this embodiment, the extension direction of the first cutout 22 is at an angle of 60° with the horizontal direction, that is, for the two conduits 2, the first cutout 22 gradually moves away from the adjacent conduit 2 in the direction toward the bottom end of the conduit 2. Such a configuration allows the concrete in the casting passage 21 to flow out more easily through the first cutout 22 and intersect between the two conduits 2. During the installation of the underwater cast-in-place pile casting device, for the cross-sections of the two conduits 2 in the horizontal direction, the midpoint of the line connecting the centers of the two cross-sections is configured to be placed at the center of the borehole to ensure that the intersecting concrete is always located at the center of the borehole, which is conducive to improving the quality of the pile. The extension direction of the second cutout 23 is at an angle of 30° with the horizontal direction, that is, for the two conduits 2, the second cutout 23 gradually moves closer to the first cutout 22 in the direction toward the bottom end of the conduit 2. Such a configuration further enhances the outflow and diffusion effect of the concrete, thereby preventing the conduit 2 from being blocked. Furthermore, by providing the first cutout 22 and the second cutout 23, the concrete can produce a certain flushing effect when flowing out, which helps to remove the residues on the inner wall of the conduit 2, and further reduces the possibility of pipe blockage.

[0047] More specifically, in other embodiments, the extension direction of the first cut 22 forms an angle of 50° with the horizontal direction, and the extension direction of the second cut 23 forms an angle of 40° with the horizontal direction. No excessive restrictions are imposed on the specific sizes of the above angles, as long as the above functional effects can be achieved.

[0048] like Figure 1-Figure 3 As shown, this embodiment also provides a method for using an underwater bored pile casting device, which uses the underwater bored pile casting device to improve construction efficiency and pile quality, and specifically includes the following steps:

[0049] Step 1: Clean the site and measure the center of the pile foundation. Cleaning the site ensures a clean construction environment and provides good conditions for subsequent drilling and pouring operations. Measuring the center of the pile foundation ensures the accuracy of the drilling position, which is conducive to improving the accuracy of pile formation.

[0050] Step 2: Drill holes according to the points in the center of the pile foundation, check the holes to see if they meet the hole opening specifications, and clean the holes.

[0051] Specifically, in the above step 2, the borehole depth, borehole diameter, hole shape and verticality are detected by an ultrasonic borehole detector. When the borehole depth, borehole diameter, hole shape and verticality meet the hole opening index, the hole is cleaned. It can be understood that the use of an ultrasonic borehole detector to comprehensively detect the borehole depth, borehole diameter, hole shape and verticality ensures the accuracy of the borehole. When all the above parameters meet the hole opening index, the operator performs the hole cleaning operation, avoiding subsequent problems caused by unqualified drilling and improving construction efficiency and quality. In other embodiments, the above parameters can also be detected by an electromagnetic wave logging instrument. The specific detection device is not limited too much here, as long as the above functions can be achieved.

[0052] Step 3: Lower the steel cage and conduit 2 into the borehole so that the bottom end of the pouring passage 21 faces the bottom of the borehole. This arrangement ensures that the concrete can be filled from the bottom of the borehole when pouring, avoiding the generation of voids and bubbles. The steel cage is surrounded to form a containing space. After the steel cage is lowered into the borehole, the conduit 2 is lowered into the containing space by hoisting, and the center between the two conduits 2 is placed at the center of the borehole to ensure the accuracy of the concrete during the pouring process.

[0053] Specifically, in step 3, the distance between the bottom end of the conduit 2 and the bottom of the drilled hole is 300-500 mm, which ensures that the concrete can flow out smoothly and avoids the problem of concrete washing the bottom of the drilled hole due to the distance between the bottom end of the conduit 2 and the bottom of the drilled hole being too close.

[0054] Step 4: Before pouring concrete, test the slump of concrete to meet the slump index. The above steps can ensure that the slump of concrete is 200±20mm and its workability is good. During the pouring process, the concrete has good fluidity and filling performance, thereby improving the density and uniformity of the pile.

[0055] Step 5: pouring concrete through one of the conduits 2 and lifting the underwater bored pile pouring device through the hoisting member 3 can ensure that the concrete can flow into the borehole evenly and continuously.

[0056] Specifically, in the above step 5, the position of the working surface for the first pouring of concrete is one meter higher than the position of the bottom end of one of the conduits 2, ensuring that the concrete can fully fill the bottom of the borehole and avoiding the occurrence of faults. At the same time, the output end of the lifting device such as a crane (such as a lifting rope or a sling, etc.) is connected to the lifting member 3, and then the underwater bored pile casting device is lifted, and the lifting speed is controlled, so that the pouring position and height of the conduit 2 can be easily adjusted, thereby improving the construction efficiency. It should be noted that during the lifting process, it is strictly forbidden to pull the conduit 2 out of the concrete.

[0057] Step 6: When one of the conduits 2 is blocked, concrete is poured through the other conduit 2, and the blocked conduit 2 is unblocked, thereby ensuring the continuity of the pouring process. At the same time, by unblocking the blocked conduit 2, construction costs are saved, which is conducive to improving the reliability and flexibility of pouring.

[0058] Specifically, in the above step six, during the concrete pouring process, if one of the conduits 2 is blocked, the operator needs to test and record the slump and workability of the concrete again, and immediately switch to another conduit 2 for construction, and clear the blocked conduit 2 to avoid accidents from happening again.

[0059] Specifically, during the concrete pouring process, the conduit 2 is buried in the concrete at a depth of 2 to 6 m, which can effectively prevent the conduit 2 from floating or deflecting due to the flow of concrete during the pouring process.

[0060] It should be noted that the method for using the underwater bored pile casting device provided in this embodiment first cleans the site and measures the point position of the pile foundation center to ensure that the construction area is clean and tidy and the accuracy of subsequent operations is accurate, which is conducive to improving the quality of pile formation. Then, according to the point position of the pile foundation center, the borehole is detected to meet the hole opening index and the hole is cleaned, providing a good foundation for subsequent concrete pouring and avoiding affecting the quality of concrete. Afterwards, the steel cage and the conduit 2 are lowered into the borehole so that the bottom end of the casting passage 21 faces the bottom of the borehole, ensuring that the concrete is filled from the bottom of the borehole, and improving the density and uniformity of the pile. Then, before concrete pouring, the slump of the concrete is tested to meet the slump index to ensure that the concrete has good filling performance during the pouring process. Then, concrete is poured through one of the conduits 2, and the underwater bored pile casting device is lifted by the hoisting member 3 to ensure that the concrete can flow into the borehole evenly and continuously to avoid interruption or stagnation during the pouring process. When one of the conduits 2 is blocked, concrete is poured through the other conduit 2, and the blocked conduit 2 is unblocked, so that the pouring process is not interrupted. Through the above arrangement, the method for using the underwater cast-in-place pile pouring device of this embodiment can improve the construction efficiency and pile quality.

[0061] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. An underwater bored pile casting device, characterized in that: include: A load-bearing plate (1); Two conduits (2) are arranged on the bearing plate (1) at intervals in the horizontal direction. A pouring passage (21) for pouring concrete is provided inside the conduit (2). The pouring passage (21) is provided through in the vertical direction. A first cutout (22) is provided on the opposite sides of the two conduits (2) near the bottom end of the pouring passage (21). A second cutout (23) is provided on the opposite sides of the two conduits (2) near the bottom end of the pouring passage (21). The pouring passage (21) is connected to the outside through the first cutout (22) and the second cutout (23). A hanging component (3) is arranged on the bearing plate (1).

2. The underwater bored pile casting device according to claim 1, characterized in that: The underwater bored pile casting device also includes a clamp (4); the conduit (2) is passed through the bearing plate (1) and is fixedly arranged on the bearing plate (1) via the clamp (4).

3. The underwater bored pile casting device according to claim 2, characterized in that: One of the conduits (2) is correspondingly provided with two clamps (4), the two clamps (4) being clamped on the outer peripheral wall of the conduit (2) and respectively abutting against two opposite sides of the bearing plate (1).

4. The underwater bored pile casting device according to claim 1, characterized in that: The hanging member (3) is a hanging ring, and two hanging rings are provided. The two hanging rings are arranged on the bearing plate (1) at intervals.

5. The underwater bored pile casting device according to any one of claims 1 to 4, characterized in that: The extending direction of the first cutout (22) forms an angle of 60° with the horizontal direction, and the extending direction of the second cutout (23) forms an angle of 30° with the horizontal direction.

6. The method for using the underwater bored pile casting device is characterized in that: Using the underwater bored pile casting device according to any one of claims 1 to 5, the method for using the underwater bored pile casting device comprises: Step 1: Clean the site and measure the center point of the pile foundation; Step 2: Drill holes according to the points in the center of the pile foundation, check the holes to see if they meet the hole opening index, and clean the holes; Step 3: lower the steel cage and the conduit (2) into the drilled hole so that the bottom end of the casting passage (21) faces the bottom of the drilled hole; Step 4: Before pouring concrete, test the slump of concrete to meet the slump index; Step 5: pouring concrete through one of the conduits (2), and lifting the underwater pile pouring device through the lifting device (3); Step 6: When one of the conduits (2) is blocked, concrete is poured through the other conduit (2) to clear the blocked conduit (2).

7. The method for using the underwater bored pile casting device according to claim 6, characterized in that: In step 2, the hole depth, hole diameter, hole shape and verticality of the drilled hole are detected by an ultrasonic bore detector. When the hole depth, hole diameter, hole shape and verticality of the drilled hole meet the hole opening indicators, the hole is cleaned.

8. The method for using the underwater bored pile casting device according to claim 6, characterized in that: In step three, the distance between the bottom end of the conduit (2) and the bottom of the drilled hole is 300 to 500 mm.

9. The method for using the underwater bored pile casting device according to claim 6, characterized in that: In step 5, the position of the working surface for the initial pouring of concrete is one meter higher than the position of the bottom end of one of the conduits (2).

10. The method for using the underwater bored pile casting device according to claim 6, characterized in that: During the concrete pouring process, the guide tube (2) is buried in the concrete to a depth of 2 to 6 meters.

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