Cast-in-place pile pouring efficiency improving device

Abstract

The utility model discloses a cast-in-place pile pouring efficiency improving device which comprises a conical sample injector, a rectangular flat plate arranged at an outlet of the conical sample injector, a U-shaped bolt arranged below the rectangular flat plate, a reinforcement cage located on the lower portion of the U-shaped bolt, a cushion layer located at the bottom of the reinforcement cage and a pile foundation template. The conical sample injector carries out concrete sample injection, a round hole with the same diameter as a U-shaped bolt is formed in the horizontal position, away from the central point, of the intersection line of the four corners of the rectangular flat plate to fix the U-shaped bolt, a round hole is formed in the central position of the rectangular flat plate to fix the conical sample injector and the pile foundation template for common limiting, and the reinforcement cage is poured into the pile foundation template. The stability of the pile foundation template is improved, the waste of concrete and manpower can be effectively prevented, the construction cost and time are effectively saved, the mounting precision of a reinforcement cage and a U-shaped bolt is improved, the mounting difficulty of a support assembly in the later period is greatly reduced, and the mounting efficiency and quality are improved.

Description

Technical Field

[0001] The present application relates to the technical field of bored pile casting, and in particular to a device for improving bored pile casting efficiency. Background Art

[0002] At present, when pouring complex mountain photovoltaic bored pile foundations, due to the general lack of experience of construction workers and their inadequate grasp of the operating process, a large amount of concrete is often wasted. At the same time, when the construction workers are pouring concrete, part of the concrete will remain on the template wall and the embedded parts threads, causing the embedded parts threads to be contaminated and filled with concrete, making it necessary to spend a lot of manpower to clean up in the later installation before the column installation can be carried out, resulting in a large waste of manpower and material resources.

[0003] On the other hand, when construction workers are installing the steel cage and U-bolts, they are often unable to completely fix the steel cage and U-bolts, which leads to large deviations in the position accuracy of the steel cage and U-bolts in the same position of the four cast-in-place pile foundations. In the same cast-in-place pile, the steel cage and U-bolts may also appear in a position where the verticality exceeds the controllable range due to inaccurate positioning, making the U-bolts and steel cage protective layer and the vertical deviation not meet the design requirements, causing many quality problems. Since the U-bolts of the four pile foundations are not on the same horizontal line and in the same position, the later bracket installation becomes more difficult or cannot be installed, greatly reducing the construction efficiency. Utility Model Content

[0004] The purpose of this application is to overcome the existing technical defects and provide a device for improving the efficiency of bored pile casting, which can effectively prevent the waste of concrete and manpower, effectively save construction costs and time, and improve the installation accuracy of steel cages and U-bolts, greatly reduce the difficulty of later bracket assembly installation, and improve installation efficiency and quality.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] In a first aspect, the present application proposes a device for improving the efficiency of cast-in-place pile casting, the device comprising a conical sample injector, a rectangular plate arranged at the outlet of the conical sample injector, a U-shaped bolt arranged under the rectangular plate, a steel cage located below the U-shaped bolt, a cushion layer located at the bottom of the steel cage, and a pile foundation template;

[0007] The conical sampler is used for concrete sampling;

[0008] Circular holes having the same diameter as the U-bolts are provided at the horizontal position of the intersection lines of the four corners of the rectangular plate from the center point for fixing the U-bolts;

[0009] A circular hole is arranged at the center of the rectangular flat plate for fixing the conical injector;

[0010] The pile foundation template is used for common positioning;

[0011] The steel cage is cast inside the pile foundation template to increase the stability of the pile foundation template.

[0012] In a possible implementation, the lower part of the conical injector is cut off by 3 / 5.

[0013] In a possible implementation, the size of the conical injector depends on the diameter of the pile foundation.

[0014] In a possible implementation, the size of the rectangular flat plate depends on the diameter of the pile foundation.

[0015] In a possible implementation, two cross-arm steel bars are welded to the lower portion of the intersection area between the steel cage and the U-bolts to fix the U-bolts.

[0016] In a possible implementation manner, the diameter of the cross arm steel bar is selected to be 5-6 cm.

[0017] In a possible implementation, the U-shaped bolt is made by bending a steel bar, and an M20 thread is provided at the U-shaped opening.

[0018] In a possible implementation manner, the steel cage is made of φ8mm steel bars.

[0019] In a possible implementation manner, the device further includes circular stirrups, and the steel cages are fixedly connected via the circular stirrups.

[0020] The above-mentioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) options and other options can also be freely combined. After understanding the scheme of the present application, those skilled in the art can understand that there are multiple combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here.

[0021] The present application discloses a device for improving the efficiency of bored pile casting, which comprises a conical sampler, a rectangular plate arranged at the outlet of the conical sampler, a U-bolt arranged under the rectangular plate, a steel cage located below the U-bolt, a cushion layer located at the bottom of the steel cage and a pile foundation template. The conical sampler is used for concrete injection, circular holes with the same diameter as the U-bolt are arranged at the horizontal position of the intersection line of the four corners of the rectangular plate from the center point to fix the U-bolt, a circular hole is arranged at the center position of the rectangular plate to fix the conical sampler, the pile foundation template is jointly limited, the steel cage is cast inside the pile foundation template to increase the stability of the pile foundation template, can effectively prevent the waste of concrete and manpower, effectively save construction cost and time, and improve the installation accuracy of the steel cage and the U-bolt, greatly reduce the difficulty of installing the later bracket components, and improve the installation efficiency and quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a bored pile casting efficiency improvement device proposed in an embodiment of the present application is shown.

[0023] Figure 2 A front view of a U-bolt proposed in an embodiment of the present application is shown.

[0024] Figure 3 A bolt schematic diagram of a U-shaped bolt proposed in an embodiment of the present application is shown.

[0025] Figure 4 A schematic diagram of the spiral stirrups proposed in an embodiment of the present application is shown.

[0026] Icons: 1-conical injector; 2-rectangular plate; 3-U-bolt; 4-steel cage; 5-pile foundation template; 6-cushion. DETAILED DESCRIPTION

[0027] The following describes the embodiments of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. The present application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0028] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0029] At present, when pouring complex mountain photovoltaic bored pile foundations, due to the general lack of experience of construction workers and their inadequate grasp of the operating process, a large amount of concrete is often wasted. At the same time, when the construction workers are pouring concrete, part of the concrete will remain on the template wall and the embedded parts threads, causing the embedded parts threads to be contaminated and filled with concrete, making it necessary to spend a lot of manpower to clean up in the later installation before the column installation can be carried out, resulting in a large waste of manpower and material resources.

[0030] On the other hand, when construction workers are installing the steel cage and U-bolts, they are often unable to completely fix the steel cage and U-bolts, which leads to large deviations in the position accuracy of the steel cage and U-bolts in the same position of the four cast-in-place pile foundations. In the same cast-in-place pile, the steel cage and U-bolts may also appear in a position where the verticality exceeds the controllable range due to inaccurate positioning, making the U-bolts and steel cage protective layer and the vertical deviation not meet the design requirements, causing many quality problems. Since the U-bolts of the four pile foundations are not on the same horizontal line and in the same position, the later bracket installation becomes more difficult or cannot be installed, greatly reducing the construction efficiency.

[0031] Therefore, in order to solve the above-mentioned problems, the embodiment of the present application proposes a device for improving the casting efficiency of bored piles, which can effectively prevent the waste of concrete and manpower, effectively save construction costs and time, and improve the installation accuracy of steel cages and U-bolts, greatly reduce the difficulty of installing the later bracket components, and improve the installation efficiency and quality. The device for improving the casting efficiency of bored piles is described in detail below.

[0032] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the device for improving the efficiency of cast-in-place pile casting proposed in the embodiment of the present application is shown. When the device is applied to photovoltaic installation in complex mountainous areas and other terrains, the device includes a conical injector, a rectangular plate arranged at the outlet of the conical injector, a U-shaped bolt arranged under the rectangular plate, a steel cage located below the U-shaped bolt, a cushion layer located at the bottom of the steel cage, and a pile foundation template;

[0033] Conical injector is used for concrete sampling;

[0034] Circular holes having the same diameter as the U-bolts are provided at the horizontal position of the intersection lines of the four corners of the rectangular plate from the center point for fixing the U-bolts;

[0035] Figure 2 The front view of the U-shaped bolt proposed in the embodiment of the present application is shown, which adopts M20 U-shaped bolt. Figure 3 A bolt schematic diagram of a U-shaped bolt proposed in an embodiment of the present application is shown, and the units in the figure are all millimeters.

[0036] A circular hole is arranged at the center of the rectangular flat plate for fixing the conical injector.

[0037] Pile foundation template, used for common limiting;

[0038] The steel cage is cast inside the pile foundation formwork to increase the stability of the pile foundation formwork.

[0039] The device for improving the efficiency of cast-in-place pile casting proposed in the embodiment of the present application is mainly divided into three parts: upper, middle and lower. The upper part adopts a conical sampler for concrete sampling. In order to increase the feeding speed, the lower part of the conical sampler is cut off by 3 / 5. At the same time, the size of the conical sampler depends on the diameter of the pile foundation.

[0040] A rectangular plate is used in the middle part. The size of the rectangular plate depends on the diameter of the pile foundation. It serves as a connecting device between the upper conical sample injector and the lower pile foundation template and the U-bolt and the steel cage assembly. A circular hole with the same diameter as the U-bolt is set at the horizontal position of 10-14cm from the center point of the intersection line of the four corners of the rectangular plate to fix the U-bolt. The specific hole position is determined according to the size of the embedded parts.

[0041] A circular hole 4 cm larger than the diameter of a circle cut at two-fifths of the injector is provided at the center of the plate to fix the conical injector.

[0042] Two cross-arm steel bars are welded at the bottom of the intersection area between the steel cage and the U-bolts to fix the U-bolts.

[0043] The diameter of the cross arm steel bar is selected to be 5-6 cm.

[0044] In order to effectively fix the position of the steel cage and the U-bolts, two cross arms with a diameter of 5-6 cm need to be welded at the bottom of the intersection area of ​​the steel cage and the U-bolts to fix the U-bolts.

[0045] The lower part is made of pile foundation template, U-bolt and steel cage combination, where U-bolt is made of bent steel bar, with M20 thread at the U-shaped opening. The steel cage is made of φ8mm steel bar.

[0046] The device also includes circular stirrups, through which the steel cage is fixedly connected, please refer to Figure 4 , Figure 4 A schematic diagram of the spiral stirrups proposed in an embodiment of the present application is shown.

[0047] When in use, the structure of the device is first assembled, and then concrete is poured directly. Since the device fixes the U-bolt, the U-bolt will not be deformed during the concrete pouring process, thereby ensuring the installation quality of the device. In addition, it has been verified that the device has been used in actual operation, and has the advantages of simple production, convenient operation, accurate positioning, and good effect.

[0048] It is worth noting that the device proposed in the embodiment of the present application needs to meet the following requirements:

[0049] First, the drilling should be ensured to be vertical. If there is a collapsed hole, the hole should be cleaned to ensure that the hole depth meets the requirements. At the same time, the pile top bolts must be accurately positioned.

[0050] Second, the thickness of the main reinforcement protective layer is 35mm; under the condition of ensuring the thickness of the main reinforcement protective layer, the diameter of the upper stirrups can be appropriately increased to facilitate the installation of anchor bolts.

[0051] Third, pile test requirements: The number of test columns for the same test project under the same geological conditions should not be less than 100,000, and the compression, pull-out and static load tests should be loaded to the destruction or design requirements. During the acceptance inspection, the maximum load of the vertical bearing capacity should not be less than twice the characteristic value of the bearing capacity, and the maximum load of the horizontal bearing capacity should not be less than the design requirement. The pile foundation bearing capacity load test should be carried out at intervals after the construction is completed.

[0052] The present application discloses a device for improving the efficiency of bored pile casting, which comprises a conical sampler, a rectangular plate arranged at the outlet of the conical sampler, a U-bolt arranged under the rectangular plate, a steel cage located below the U-bolt, a cushion layer located at the bottom of the steel cage and a pile foundation template. The conical sampler is used for concrete injection, circular holes with the same diameter as the U-bolt are arranged at the horizontal position of the intersection line of the four corners of the rectangular plate from the center point to fix the U-bolt, a circular hole is arranged at the center position of the rectangular plate to fix the conical sampler, the pile foundation template is jointly limited, the steel cage is cast inside the pile foundation template to increase the stability of the pile foundation template, can effectively prevent the waste of concrete and manpower, effectively save construction cost and time, and improve the installation accuracy of the steel cage and the U-bolt, greatly reduce the difficulty of installing the later bracket components, and improve the installation efficiency and quality.

[0053] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A device for improving the efficiency of cast-in-place pile casting, characterized in that: The device comprises a conical sample injector, a rectangular plate arranged at the outlet of the conical sample injector, a U-shaped bolt arranged under the rectangular plate, a steel cage located under the U-shaped bolt, a cushion layer located at the bottom of the steel cage, and a pile foundation template; The conical sampler is used for concrete sampling; Circular holes having the same diameter as the U-bolts are provided at the horizontal position of the intersection lines of the four corners of the rectangular plate from the center point for fixing the U-bolts; A circular hole is arranged at the center of the rectangular flat plate for fixing the conical injector; The pile foundation template is used for common positioning; The steel cage is cast inside the pile foundation template to increase the stability of the pile foundation template.

2. The device for improving the efficiency of cast-in-place pile construction according to claim 1, characterized in that: The lower part of the conical injector is cut off by 3 / 5.

3. The device for improving the efficiency of cast-in-place pile construction according to claim 1, characterized in that: The size of the cone injector depends on the pile diameter.

4. The device for improving the efficiency of cast-in-place pile construction according to claim 1, characterized in that: The size of the rectangular slab depends on the diameter of the pile foundation.

5. The device for improving the efficiency of cast-in-place pile construction according to claim 1, characterized in that: Two cross-arm steel bars are welded at the bottom of the intersection area between the steel cage and the U-bolts to fix the U-bolts.

6. The device for improving the efficiency of cast-in-place pile construction according to claim 5, characterized in that: The diameter of the cross arm steel bar is selected to be 5-6 cm.

7. The device for improving the efficiency of cast-in-place pile construction according to claim 1, characterized in that: The U-shaped bolt is made by bending a steel bar, and an M20 thread is arranged at the U-shaped opening.

8. The device for improving the efficiency of cast-in-place pile construction according to claim 1, characterized in that: The steel cage is made of φ8mm steel bars.

9. The device for improving the efficiency of cast-in-place pile construction according to claim 1, characterized in that: The device also includes circular stirrups, and the steel cages are fixedly connected by the circular stirrups.

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