A method for detecting and treating pile end sediment

Abstract

The present invention relates to the technical field of bored pile construction quality detection, and discloses a pile end sediment detection and processing method, comprising a pile body, wherein a pile end sediment detection and processing device is arranged at the bottom of the pile body; an oil pipe, a displacement wire and a grouting pipe connected to the pile body are arranged in the pile body, and the oil pipe, the displacement wire and the grouting pipe are led to the ground along the pile body; pile end sediment is arranged at the bottom of the pile body, a pressure plate is arranged at the bottom of the pile end sediment detection and processing device, and a pile end grouting body flows in the grouting pipe. The pile end sediment detection and processing method solves the problem of detecting the thickness of the pile end sediment after the pile is formed, which is of great significance to the reliability of the foundation pile, and the pile end sediment can be effectively processed through the reserved grouting pipe to ensure that the bearing capacity of the foundation pile is effectively exerted.

Description

Technical Field

[0001] The invention relates to the technical field of bored pile construction quality detection, in particular to a pile end sediment detection and treatment method. Background Art

[0002] Sediment refers to the sediment that is not cleaned up and is left behind during the drilling and cleaning process. In order to detect the quality of concrete bored piles and evaluate whether the quality of the rotary bored pile body, the sediment at the bottom of the pile, and the bearing layer at the pile end meet the requirements of the specifications, the pouring quality of the rotary bored piles is often tested after the concrete is poured. The detection methods include low-strain method, ultrasonic method, and core drilling method. Among them, the low-strain method and ultrasonic method are non-destructive testing and are suitable for pile body quality detection. The core drilling method can detect the pouring quality of the pile body, the sediment at the bottom of the pile, and the properties of the bearing layer at the pile end through drilling cores. The reliability of pile bottom sediment detection is greatly affected by the construction level, and misjudgment due to the construction level cannot be verified.

[0003] The thickness of the sediment at the pile end directly affects the bearing capacity of the foundation pile. When the sediment is too thick, it will lead to the loss of bearing capacity of the foundation pile, causing engineering accidents. In addition, during the pouring process of the foundation piles, the bottom is not cleaned cleanly and the sediment is too thick, resulting in insufficient bearing capacity of the foundation piles. This happens from time to time, posing a safety hazard to the construction project. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a method for detecting and treating pile end sediment, which has the problem of detecting the thickness of the pile end sediment after pile formation, and is of great significance to the reliability of the foundation pile. The pile end sediment can be effectively treated through a reserved grouting pipe to ensure that the bearing capacity of the foundation pile is effectively exerted, and the problem of the thickness of the pile end sediment directly affecting the bearing capacity of the foundation pile is solved. When the sediment is too thick, it will lead to the loss of the bearing capacity of the foundation pile, causing engineering accidents. In addition, during the pouring process of the foundation pile, the bottom is often not cleaned cleanly and the sediment is too thick, resulting in insufficient bearing capacity of the foundation pile, which occurs from time to time and brings safety hazards to the construction project.

[0006] (II) Technical solution

[0007] In order to achieve the above-mentioned problem of detecting the thickness of the pile end sediment after the pile is formed, which is of great significance to the reliability of the foundation pile, the pile end sediment can be effectively processed through the reserved grouting pipe to ensure the effective performance of the bearing capacity of the foundation pile. The present invention provides the following technical solutions: a pile end sediment detection and processing method, comprising a pile body, wherein a pile end sediment detection and processing device is arranged at the bottom of the pile body;

[0008] The pile body is provided with an oil pipe, a displacement wire and a grouting pipe which are connected with the pile body, and the oil pipe, the displacement wire and the grouting pipe are led to the ground along the pile body;

[0009] The bottom of the pile body is provided with pile end sediment, the bottom of the pile end sediment detection and processing device is provided with a pressure plate, and the pile end grouting body flows in the grouting pipe.

[0010] Preferably, the thickness of the pile end sediment for an end bearing pile should be less than 50 mm, and the thickness of the pile end sediment for a friction pile should be less than 150 mm.

[0011] Preferably, the oil pipe is externally connected to a high-pressure oil pump, the displacement wire is externally connected to a displacement meter, and the grouting pipe is externally connected to a grouting pump.

[0012] Preferably, the top of the pressing plate and the bottom of the displacement wire are connected to each other.

[0013] The present invention also proposes a method for detecting pile end sediment, comprising the following steps:

[0014] Step 1: The pile end sediment detection and processing device is pre-buried at the bottom of the pile body. Then, after the pile body concrete reaches a certain strength level, the oil pipe is connected to the high-pressure oil pump, and the displacement wire is connected to the displacement meter. The high-pressure oil pump presses the oil pipe. The pile end sediment detection and processing device generates a downward thrust under the action of the oil pressure, and the pressure plate squeezes the pile end sediment downward;

[0015] Step 2: During the downward squeezing process of the pressure plate, the displacement wire connected to it will be displaced accordingly, and the displacement will be measured by the displacement meter connected to the displacement wire. The thickness of the pile bottom sediment can be judged by the amount of displacement, thereby achieving the purpose of detecting the pile end sediment;

[0016] Step 3: If it is determined that there is no end sediment at the bottom of the pile body, or the end sediment is within the allowable range, the work is finished. If it is determined that there is end sediment at the bottom of the pile body and it needs to be processed, the next step is carried out;

[0017] Step 4: Connect the grouting pipe to the grouting pump, and inject the pile end grouting body into the pipe. The pile end grouting body is injected into the pile end sediment at the bottom of the pile body through the grouting pipe to reinforce the pile end sediment and achieve the purpose of treating the pile end sediment.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the present invention provides a pile end sediment detection and treatment method, which has the following beneficial effects:

[0020] The pile end sediment detection and treatment method is provided with a pile end sediment detection and treatment device under the pile body. Before the foundation pile is poured, a pile end sediment detection device is pre-buried at the bottom of the pile. After the concrete pouring is completed, the pile end sediment is detected. If sediment is detected, the sediment is treated. If no sediment is detected, no treatment is required. The purpose of detecting and remediating the pile end sediment after the pile is formed is achieved, and the detection of the thickness of the pile end sediment after the pile is formed is solved. It is of great significance to the reliability of the foundation pile. The pile end sediment can be effectively treated through the reserved grouting pipe to ensure that the bearing capacity of the foundation pile is effectively exerted. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a pile end sediment detection and treatment method and a pile end sediment detection and treatment device proposed by the present invention;

[0022] Figure 2 A schematic diagram of oil injection and pressurization of a pile end sediment detection and treatment method proposed by the present invention;

[0023] Figure 3 A schematic diagram of the injection of grouting body at the pile end of a pile end sediment detection and treatment method proposed by the present invention.

[0024] In the figure: 1. Pile end sediment detection and processing device; 2. Oil pipe; 3. Displacement wire; 4. Grouting pipe; 5. Pile body; 6. Pile end sediment; 7. Pressure plate; 8. Pile end grouting body. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-3 , a pile end sediment detection and treatment method, comprising a pile body 5, a pile end sediment detection and treatment device 1 is arranged at the bottom of the pile body 5;

[0027] The pile body 5 is provided with an oil pipe 2, a displacement wire 3 and a grouting pipe 4 which are connected to the pile body 5, and the oil pipe 2, the displacement wire 3 and the grouting pipe 4 are led to the ground along the pile body 5;

[0028] A pile end sediment 6 is arranged at the bottom of the pile body 5 , a pressing plate 7 is arranged at the bottom of the pile end sediment detection and processing device 1 , and a pile end grouting body 8 flows in the grouting pipe 4 .

[0029] The thickness of the pile end sediment 6 for the end bearing pile should be less than 50 mm, and the thickness of the pile end sediment 6 for the friction pile should be less than 150 mm.

[0030] The oil pipe 2 is externally connected to a high-pressure oil pump, the displacement wire 3 is externally connected to a displacement meter, and the grouting pipe 4 is externally connected to a grouting pump.

[0031] The top of the pressing plate 7 and the bottom of the displacement wire 3 are connected to each other.

[0032] The present invention also proposes a method for detecting pile end sediment, comprising the following steps:

[0033] Step 1: The pile end sediment detection and processing device 1 is pre-buried at the bottom of the pile body. Then, after the concrete of the pile body 5 reaches a certain strength level, the oil pipe 2 is connected to the high-pressure oil pump, and the displacement wire 3 is connected to the displacement meter. The high-pressure oil pump presses into the oil pipe 2, and the pile end sediment detection and processing device 1 generates a thrust downward under the action of the oil pressure, and the pressure plate 7 squeezes the pile end sediment 6 downward;

[0034] Step 2: During the downward squeezing process of the pressing plate 7, the displacement wire 3 connected thereto is displaced accordingly, and the displacement is measured by the displacement meter connected to the displacement wire 3. The thickness of the pile bottom sediment 6 is determined by the amount of displacement, thereby achieving the purpose of detecting the pile end sediment 6;

[0035] Step 3: If it is determined that there is no pile end sediment 6 at the bottom of the pile body 5, or the pile end sediment 6 is within the allowable range, the work is terminated. If it is determined that there is pile end sediment 6 at the bottom of the pile body 5 and it needs to be processed, the next step is performed;

[0036] Step 4: The grouting pipe 4 is connected to the grouting pump, and the pile end grouting body 8 is injected into the pipe. The pile end grouting body 8 is injected into the pile end sediment 6 at the bottom of the pile body 5 through the grouting pipe 4 to reinforce the pile end sediment 6 and achieve the purpose of treating the pile end sediment 6.

[0037] In summary, the pile end sediment detection and treatment method is as follows: the pile end sediment detection and treatment device 1 is pre-buried at the bottom of the pile body, and then after the concrete of the pile body 5 reaches a certain strength level, the oil pipe 2 is connected to the high-pressure oil pump, and the displacement wire 3 is connected to the displacement meter. The high-pressure oil pump presses into the oil pipe 2, and the pile end sediment detection and treatment device 1 generates a downward thrust under the action of the oil pressure, and the pressure plate 7 squeezes the pile end sediment 6 downward. During the downward squeezing process of the pressure plate 7, the displacement wire 3 connected thereto is displaced accordingly, and the displacement is measured by the displacement meter connected to the displacement wire 3. The thickness of the pile bottom sediment 6 is judged by the amount of displacement, thereby achieving the purpose of detecting the pile end sediment 6. After judgment, if there is no pile end sediment 6 at the bottom of the pile body 5, or the pile end sediment 6 is within the allowable range, the work is terminated. After judgment, if there is pile end sediment 6 at the bottom of the pile body 5 and it needs to be processed, the next step is to connect the grouting pipe 4 to the grouting pump, and inject the pile end grouting body 8 into the pipe. The pile end grouting body 8 is injected into the pile end sediment 6 at the bottom of the pile body 5 through the grouting pipe 4 to reinforce the pile end sediment 6, thereby achieving the purpose of processing the pile end sediment 6.

[0038] It should be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for detecting sediment at a pile end, comprising a pile body (5), characterized in that: A pile end sediment detection and processing device (1) is provided at the bottom of the pile body (5); An oil pipe (2), a displacement wire (3) and a grouting pipe (4) are arranged in the pile body (5); the oil pipe (2), the displacement wire (3) and the grouting pipe (4) are led to the ground along the pile body (5); The bottom of the pile body (5) has pile end sediment (6), the bottom of the pile end sediment detection and processing device (1) is provided with a pressure plate (7), and the grouting pipe (4) has a pile end grouting body (8) flowing in it; The steps include: Step 1: The pile end sediment detection and processing device (1) is pre-buried at the bottom of the pile body. After the concrete of the pile body (5) reaches a certain strength level, the oil pipe (2) is connected to a high-pressure oil pump, and the displacement wire (3) is connected to a displacement meter. The high-pressure oil pump presses into the oil pipe (2). The pile end sediment detection and processing device (1) generates a thrust downward under the action of the oil pressure, and the pressure plate (7) squeezes the pile end sediment (6) downward. Step 2: When the pressure plate (7) is pressed downward, the displacement wire (3) connected thereto is displaced accordingly, and the displacement is measured by a displacement meter connected to the displacement wire (3). The thickness of the pile end sediment (6) is determined by the amount of displacement, thereby achieving the purpose of detecting the pile end sediment (6); Step 3: If it is determined that there is no pile end sediment (6) at the bottom of the pile body (5), or the pile end sediment (6) is within the allowable range, the work is terminated. If it is determined that there is pile end sediment (6) at the bottom of the pile body (5) and it needs to be processed, the next step is performed; Step 4: The grouting pipe (4) is connected to a grouting pump, and the pile end grouting body (8) is injected into the pipe. The pile end grouting body (8) is injected into the pile end sediment (6) at the bottom of the pile body (5) through the grouting pipe (4), so as to reinforce the pile end sediment (6) and achieve the purpose of treating the pile end sediment (6).

2. A method for detecting pile end sediment according to claim 1, characterized in that: The thickness of the pile end sediment (6) for an end bearing pile should be less than 50 mm, and the thickness of the pile end sediment (6) for a friction pile should be less than 150 mm.

3. A method for detecting pile end sediment according to claim 1, characterized in that: The oil pipe (2) is externally connected to a high-pressure oil pump, the displacement wire (3) is externally connected to a displacement meter, and the grouting pipe (4) is externally connected to a grouting pump.

4. A method for detecting pile end sediment according to claim 1, characterized in that: The top of the pressing plate (7) and the bottom of the displacement wire (3) are connected to each other.

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