Construction member for reinforced concrete cast-in-place pile and construction method thereof

Abstract

The invention relates to the technical field of cast-in-place pile construction, and provides a construction component for a reinforced concrete cast-in-place pile. The construction component comprises a reinforcement cage, a degradable sounding pipe and a sediment cleaning assembly, and at least part of the sediment cleaning assembly is arranged at the end, used for being inserted into a drilled hole, of the reinforcement cage; at least part, located in the drill hole, of the sediment cleaning assembly is made of degradable materials, and the degradable sounding pipe is fixedly arranged on the inner side of the reinforcement cage in the axial direction of the reinforcement cage and connected with the sediment cleaning assembly; a sediment cleaning hole and a one-way water inlet hole are formed in the lower end of the sediment cleaning assembly. According to the construction component for the reinforced concrete cast-in-place pile and the construction method of the construction component, the pile forming reliability of the cast-in-place pile can be improved.

Description

Technical Field

[0001] The present application belongs to the technical field of bored pile construction, and more specifically, to a construction component for reinforced concrete bored piles and a construction method thereof. Background Art

[0002] Building construction requires excavation of foundation pits first. The excavation depth of foundation pits, especially deep foundation pits, can even reach more than ten meters or dozens of meters. The excavation depth often touches the soft clay layer, quicksand layer and groundwater layer, so it is necessary to carry out enclosure operations around the foundation pit before excavation to prevent landslides during excavation. Cast-in-place piles are a commonly used enclosure operation method for deep foundation pits. When constructing cast-in-place piles, it is necessary to drill holes first, then place a steel cage in the hole, and then pour concrete. The problem with this processing method is that the sediment in the borehole is not easy to clean. When the sediment is not cleaned in place, if there is a defect that the concrete is not vibrated densely, the processed pile body will be prone to defects such as honeycombs, voids, mud inclusions, segregation, etc., and affect the final pile quality.

[0003] In order to solve the above problems, the relevant technology can realize ultrasonic detection of the pile body in the later stage by adding an ultrasonic detection tube during construction. The principle of the ultrasonic detection tube is based on the propagation characteristics of ultrasonic waves in concrete. Concrete is a multi-phase inhomogeneous body composed of various materials, and the propagation speed of sound waves in normal concrete is within a certain range. When ultrasonic waves encounter defects in concrete, such as fractures, cracks or mud inclusions, the sound waves will bypass the defects or slow down the propagation speed, resulting in sound wave attenuation, prolonged propagation time, reduced sound speed, reduced amplitude, and waveform distortion. By analyzing these changes, the quality and defects of the pile concrete can be judged.

[0004] However, it is found in practice that the above detection method has certain limitations and cannot accurately reflect the quality of the pile body. Once a pile body defect is found in the later stage, it is necessary to dig on the pile body, find the defective part, and then repair it, which is a destructive repair method that is time-consuming and laborious.

[0005] In order to solve the above problems and reduce the possibility of defects in the pile body, it is necessary to improve the existing pile-forming components and construction technology. Summary of the invention

[0006] The present application aims to solve one of the technical problems in the related art at least to some extent.

[0007] To this end, an embodiment of the present application provides a construction component for reinforced concrete bored piles and a construction method thereof, so as to improve the pile formation reliability of the bored piles at least to a certain extent.

[0008] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a construction component for reinforced concrete bored piles, comprising a steel cage, a degradable acoustic detection tube and a sediment cleaning assembly, at least part of the sediment cleaning assembly is arranged at one end of the steel cage for inserting into a borehole, at least part of the sediment cleaning assembly located in the borehole is made of degradable material, the degradable acoustic detection tube is fixedly arranged on the inner side of the steel cage along the axial direction of the steel cage and connected to the sediment cleaning assembly; a sediment cleaning hole and a one-way water inlet hole are provided at the lower end of the sediment cleaning assembly.

[0009] In the above technical solution, preferably, the sediment cleaning assembly comprises a sleeve, a conduit and a positioning rod, and the sleeve and the conduit are both made of degradable materials; The conduit is located in the steel cage and extends along the axial direction of the steel cage. The positioning rod is detachably connected to the steel cage. The sleeve is sleeved on one end of the steel cage in the axial direction and connected to the degradable acoustic detection tube. The sediment cleaning hole and the one-way water inlet hole are arranged on the sleeve. One end of the conduit is connected to the positioning rod, and the other end is connected to the sediment cleaning hole through the sleeve. Under the action of negative pressure, the sediment in the drill hole can flow through the sediment cleaning hole and be discharged through the conduit.

[0010] In the above technical solution, preferably, the sediment cleaning hole is opened in the middle of the sleeve, and the number of the one-way water inlet holes is multiple and arranged around the sediment cleaning hole.

[0011] In the above technical solution, preferably, the steel cage comprises main bars, reinforcing bars and spiral bars, the number of the main bars is plural and they are arranged along the axial direction of the steel cage, the reinforcing bars are welded and fixed to the inner side of the main bars, and the spiral bars are welded and fixed to the outer side of the main bars; Wherein, the degradable acoustic detection tube is bundled on the reinforcing rib.

[0012] The present application also provides a construction method for a construction member for a reinforced concrete cast-in-place pile, the construction method comprising the following steps: Step S1, preparing construction components for drilling and reinforced concrete cast-in-place piles; Step S2, placing the reinforced concrete bored pile construction component in the borehole, and connecting the sediment cleaning component of the reinforced concrete bored pile construction component to a negative pressure suction device; Step S3: Clean the sediment in the borehole by using the negative pressure suction equipment.

[0013] In the above technical solution, preferably, the construction method further comprises the following steps: Step S4, when the sediment cleaning assembly is in a negative pressure state, pouring concrete into the borehole to obtain a pile body; Step S5: detecting and repairing the pile body through a degradable acoustic detection tube.

[0014] In the above technical solution, preferably, step S5 includes: Step S51, performing ultrasonic testing on the pile body through a degradable acoustic testing tube, and saving the testing data; Step S52, comparing the detection data, performing degradation treatment on the part of the degradable acoustic detection tube to expose the pile body at the suspicious point, and rechecking the pile body at the suspicious point by using a visual probe; when the suspicious point is a first defect, repairing it by using a first repairing method.

[0015] In the above technical solution, preferably, in the step S52, the first defect refers to a slight defect, and the first repairing method includes injecting epoxy resin material into the suspicious point having the first defect.

[0016] In the above technical solution, preferably, the construction method further comprises the following steps: Step S6, performing air tightness detection and sealing on the cavity in the pile body, wherein the cavity is formed by the degradation of the degradable acoustic detection tube and the degradable part of the sediment cleaning assembly.

[0017] In the above technical solution, preferably, in the step S6, the sealing includes pouring concrete into the cavity under negative pressure.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects: The construction component for reinforced concrete bored piles provided in the embodiment of the present application includes a steel cage, a degradable acoustic detection tube and a sediment cleaning assembly arranged on the steel cage, wherein the sediment cleaning assembly can cooperate with an external negative pressure device to further clean the sediment remaining in the borehole when the steel cage is placed in the borehole, thereby improving the problem that the sediment in the borehole is not easy to clean and affects the quality of the concrete bored pile in the related art; in addition, the one-way water inlet hole arranged on the sediment cleaning assembly can also reduce the influence of the buoyancy generated by the groundwater in the borehole on the placement of the steel cage, reduce the difficulty of placing the steel cage, and enable the steel cage to be better placed at the designed depth, which is conducive to reducing the difficulty of preparing the pile body and improving the quality and pouring efficiency of the bored pile obtained by the processing; and the degradable acoustic detection tube can not only realize the quality detection of the prepared bored pile body, but also can use its degradable characteristics to realize non-destructive detection and non-destructive repair of the pile body, and at least part of the degradable sediment cleaning assembly can cooperate with the degradable acoustic detection tube to form a cavity and can also re-detect the repaired pile body to make up for the shortcomings of the acoustic detection means and improve the accuracy of the pile body quality detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 A front view of a construction member for reinforced concrete bored piles provided in an embodiment of the present application; Figure 2 A top view of a construction member for reinforced concrete bored piles provided in an embodiment of the present application; Figure 3 A schematic diagram of the use of a construction member for reinforced concrete bored piles provided in an embodiment of the present application in a drilled hole; Figure 4 A schematic diagram of the structure of a steel cage in a construction component for reinforced concrete bored piles provided in an embodiment of the present application.

[0021] Among them, the reference numerals in the figure are: 1. Steel cage; 11. Main reinforcement; 12. Reinforcing ribs; 13. Spiral ribs; 2. Degradable acoustic detection tube; 3. Sediment cleaning assembly; 31. Sleeve; 311. Sediment cleaning hole; 312. One-way water inlet hole; 32. Conduit. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0024] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0025] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, an electrical connection, or communication with each other; 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0029] See also Figure 1-Figure 4 The embodiment of the present application provides a construction component for reinforced concrete bored piles. The construction component can at least to some extent improve at least one of the following construction problems during bored pile construction: incomplete sediment cleaning, insufficient lowering depth of the steel cage 1, poor pile quality detection accuracy, and complicated pile repair operations. Through a new type of construction component, it helps to reduce the construction difficulty of reinforced concrete bored piles and improve the quality of the bored piles finally prepared.

[0030] See also Figure 1-Figure 3 The above-mentioned construction components for reinforced concrete bored piles mainly include three parts: a steel cage 1, an acoustic detection tube and a sediment cleaning component 3, wherein the acoustic detection tube is a degradable acoustic detection tube 2 made of degradable materials, and at least part of the sediment cleaning component 3 is made of degradable materials.

[0031] Specifically, at least part of the sediment cleaning assembly 3 is arranged at one end of the steel cage 1 for inserting into the borehole. And the structure of the sediment cleaning assembly 3 inserted into the borehole is made of degradable materials. Of course, there are also some related structures of the sediment cleaning assembly 3 that do not need to be inserted into the borehole, and the structure can be made of rigid materials.

[0032] See also Figure 1 and Figure 2The above-mentioned steel cage 1 is a columnar structure, and the degradable acoustic detection tube 2 is fixedly arranged on the inner side of the steel cage 1 along the axial direction of the steel cage 1 and contacts with the sediment cleaning component 3 located at one end structure of the steel cage 1 extending into the borehole; the lower end of the sediment cleaning component 3 points to the bottom of the borehole, and the lower end of the sediment cleaning component 3 is provided with a sediment cleaning hole 311 and a one-way water inlet hole 312.

[0033] When the sediment cleaning component 3 is working, please refer to Figure 3 The sediment can enter the sediment cleaning assembly 3 through the sediment cleaning hole 311 to achieve the cleaning of the sediment; at the same time, the water (such as groundwater, etc.) in the borehole can flow into the sediment cleaning assembly 3 through the one-way water inlet hole 312, thereby offsetting the buoyancy of the water that may be applied to the sediment cleaning assembly 3 and the steel cage 1, and preventing the buoyancy of the water from affecting the normal lowering of the steel cage 1.

[0034] The one-way water inlet hole 312 can effectively overcome the influence of the buoyancy of water on the lowering of the steel cage 1, thereby improving the success rate of lowering the steel cage 1 and ensuring that the steel cage 1 can be placed at the designed depth.

[0035] The structure of the above-mentioned sediment cleaning component 3 is specifically described below: The sediment cleaning assembly 3 includes a sleeve 31, a conduit 32 and a positioning rod, wherein the sleeve 31 and the conduit 32 are both made of degradable materials, and the positioning rod is made of a rigid material. The conduit 32 is located in the steel cage 1 and is extended along the axial direction of the steel cage 1. The positioning rod is detachably connected to the steel cage 1. The sleeve 31 is sleeved on one end of the steel cage 1 in the axial direction and is connected to the degradable acoustic detection tube 2. The sediment cleaning hole 311 and the one-way water inlet hole 312 are arranged on the sleeve 31; one end of the conduit 32 is connected to the positioning rod, and the other end is connected to the sediment cleaning hole 311 through the sleeve 31; under the action of negative pressure, the sediment in the drill hole can flow through the conduit 32 through the sediment cleaning hole 311 and be discharged.

[0036] That is to say, the guide tube 32 and the sleeve 31 can be inserted into the borehole synchronously with the steel cage 1, and can be degraded according to construction needs so as not to affect the normal construction of the pile body of the bored pile.

[0037] When the sediment needs to be processed, the conduit 32 can extend out of the borehole through the positioning rod and communicate with the negative pressure suction device outside the borehole. Under the action of negative pressure, the sediment in the borehole can be sucked into the conduit 32 through the sediment cleaning hole 311 under the action of pressure difference, and discharged from the borehole through the conduit 32.

[0038] For example, in a borehole opened in silty clay or fine sand formations, negative pressure suction can efficiently extract the sediment formed in the borehole. Compared with traditional cleaning methods, such as the slag removal method, which may disturb the hole wall due to inaccurate operation, negative pressure suction can better clean the sediment without damaging the hole wall.

[0039] Specifically, the negative pressure suction device may be a negative pressure sediment cleaning pump.

[0040] See also Figure 2 The above-mentioned sediment cleaning hole 311 is opened in the middle of the sleeve 31, and the number of the one-way water inlet holes 312 is multiple and is arranged around the sediment cleaning hole 311.

[0041] The structure of the steel cage 1 is introduced below.

[0042] See also Figure 4 The steel cage 1 includes main bars 11, reinforcing bars 12 and spiral bars 13. The number of main bars 11 is multiple and they are extended along the axial direction of the steel cage 1. The reinforcing bars 12 are welded and fixed to the inner side of the main bars 11, and the spiral bars 13 are welded and fixed to the outer side of the main bars 11; wherein the degradable acoustic detection tube 2 is bundled on the reinforcing bars 12.

[0043] When cleaning the sediment, the positioning rod in the sediment cleaning assembly 3 can be fixed to a related supporting structure outside the borehole, or fixed to a position of the steel cage 1 close to the borehole opening.

[0044] The fixing method of the positioning rod is prior art and will not be described in detail here.

[0045] The embodiment of the present application also provides a construction method for construction components for reinforced concrete bored piles, which uses the construction components for reinforced concrete bored piles described above to perform bored pile construction, inspection, and repair.

[0046] Specifically, the above construction method comprises the following steps: Step S1, preparing construction components for drilling and reinforced concrete cast-in-place piles; Step S2, placing a reinforced concrete bored pile construction member in the borehole, and connecting a sediment cleaning assembly 3 of the reinforced concrete bored pile construction member to a negative pressure suction device; Step S3: Clean the sediment in the borehole by using negative pressure suction equipment.

[0047] In step S1 , the preparation of the drill hole may refer to the drilling processing method disclosed in the related art, which will not be described in detail in this embodiment.

[0048] After the borehole is prepared, the reinforced concrete bored pile construction components described above can be hoisted by a crane, crawler crane or gantry crane and placed into the borehole, and then connected to the corresponding negative pressure sediment cleaning pump according to the construction progress, that is, step S2 is executed.

[0049] In step S3, the sediment in the borehole can enter the sediment cleaning assembly 3 through the sediment cleaning hole 311, and at the same time, the water formed in the borehole can enter the sediment cleaning assembly 3 through the one-way water inlet hole 312 to offset the influence of groundwater on the placement position of the steel cage 1. As the sediment and groundwater descend, the steel cage 1 can be gradually lowered to the designed depth.

[0050] After the sediment cleaning and the placement of the steel cage 1 are completed, the boreholes can be poured with concrete to prepare a reinforced concrete pile body according to the construction progress requirements.

[0051] As an optional implementation, the construction method further includes the following steps: Step S4, when the sediment cleaning assembly 3 is in a negative pressure state, concrete is poured into the borehole to obtain a pile body.

[0052] Before pouring concrete, in order to reduce the influence of the sediment cleaning assembly 3 on the pile quality as much as possible, the sediment cleaning assembly 3 should be set in a negative pressure state.

[0053] During the concrete pouring process, maintaining a negative pressure state in the borehole can effectively prevent the collapse of the hole wall. When the borehole is under negative pressure, the hole wall is subjected to inward pressure, which can balance part of the outward force on the hole wall caused by factors such as the dead weight of the concrete and the impact force of the pouring. For example, in some strata with poor stability such as sandy soil or silty soil, the balancing effect of this negative pressure is particularly important. It can maintain the stability of the hole wall and ensure that the pouring process can proceed smoothly. In addition, the negative pressure environment helps concrete fill the borehole better. It can make the concrete fill every corner of the borehole more tightly under the action of the pressure difference, reducing the voids and segregation in the concrete. The concrete piles poured in this way are of higher quality, can better bear the load transmitted from the upper structure, and improve the stability and safety of the entire foundation structure.

[0054] Specifically, the sediment cleaning assembly 3 can be connected to an external vacuum machine to maintain a negative pressure state to assist in the concrete pouring operation and ensure the quality of concrete pouring. The vacuum machine can suck the air in the borehole through the conduit 32 to reduce the air pressure in the borehole to make it lower than the external atmospheric pressure and form a negative pressure state. This method can accurately control the size of the negative pressure and is relatively flexible in operation.

[0055] As an optional implementation, the construction method further includes the following steps: Step S5, detecting and repairing the pile body through the degradable acoustic detection tube 2.

[0056] Specifically, step S5 includes: Step S51, performing ultrasonic testing on the pile body through the degradable acoustic testing tube 2, and saving the testing data; Step S52, comparing the detection data, degrading part of the degradable acoustic detection tube 2 to expose the pile body at the suspicious point, and rechecking the pile body at the suspicious point through a visual probe; when the suspicious point belongs to the first defect, repair it by the first repair method.

[0057] After the concrete solidifies to the design requirements, the pile body can be ultrasonically tested through the degradable acoustic detection tube 2, and the test data can be saved. By comparing the detected data with the pre-obtained standard test data, several suspicious points that may have quality problems can be obtained. Subsequently, each of the above suspicious points can be confirmed and repaired in turn.

[0058] Specifically, according to the severity of concrete defects, they can generally be divided into first defects and second defects, wherein the first defect is a minor defect and can be repaired by the first repair method; the second defect is a serious defect and can be repaired by secondary concrete pouring after the overall inspection is completed and the hole is sealed.

[0059] When a suspicious point is detected, the relevant position of the degradable acoustic detection tube 2 can be individually degraded, and a visual probe can be delivered to the relevant position. The operator can intuitively see the actual situation of the suspicious point through the visual probe, and confirm whether there is a defect at the suspicious point by visually re-inspecting the suspicious point, and whether the type of defect is the first defect or the second defect, so as to confirm the subsequent repair method. If it is judged that there is no defect at the suspicious point, it does not need to be repaired; if it is judged that the suspicious point is the first defect, it needs to be repaired by the first repair method; if it is judged that the suspicious point is the second defect, it needs to be processed after the overall inspection is completed.

[0060] By carrying out distributed and controllable degradation of the degradable acoustic detection tube 2, the techniques and means for detecting the pile body can be further enriched to improve the reliability and accuracy of the detection result.

[0061] In some embodiments, the first repairing method referred to in the above step S52 includes injecting epoxy resin material into the suspected point having the first defect.

[0062] Specifically, the first repairing method may be to use a press to inject a high-permeability epoxy resin material into the concrete defect site exposed after the degradation of the acoustic detection tube, that is, the site where the first defect is located, so as to repair the first defect.

[0063] After repairing the first defect of the pile body, in some embodiments, the construction method further comprises the following steps: Step S6, performing air tightness detection and sealing on the cavity in the pile body, the cavity being formed by the degradation of the degradable part of the degradable acoustic detection tube 2 and the sediment cleaning component 3.

[0064] After step S5 is completed, the above-mentioned degradable acoustic detection tube 2, the conduit 32 and the sleeve 31 can all be subjected to degradation treatment. After the above-mentioned materials are degraded, interconnected cavities can be formed at their locations. The air tightness of the cavity is tested to confirm the quality of the pile body.

[0065] The cavity is sealed and negative pressure is applied, and then the cavity is tested for air tightness. The air tightness test belongs to the prior art and will not be described in detail in this application.

[0066] The interconnected cavities formed by the above-mentioned biodegradable materials can provide convenience for pile body air tightness detection, pile body repair and hole sealing, etc.

[0067] After the pile quality meets the air tightness test requirements, it needs to be sealed, which is called hole sealing.

[0068] As an optional implementation, in step S6, sealing the hole includes pouring concrete into the cavity under negative pressure.

[0069] Specifically, the operation method of the above-mentioned hole sealing operation is as follows: concrete is poured into the cavity in a negative pressure state to achieve concrete hole sealing.

[0070] Compared with the related art, the construction component for reinforced concrete bored piles provided in the embodiment of the present application can cooperate with an external negative pressure device to further clean the sediment remaining in the borehole when the steel cage 1 is placed in the borehole, thereby improving the problem that the sediment in the borehole is not easy to clean and affects the quality of the concrete bored pile in the related art; in addition, the one-way water inlet hole 312 provided on the sediment cleaning component 3 can also reduce the influence of the buoyancy generated by the groundwater in the borehole on the placement of the steel cage 1, reduce the difficulty of placing the steel cage 1, and enable the steel cage 1 to be better placed at the designed depth, which is conducive to reducing the difficulty of pile preparation and improving the quality and pouring efficiency of the processed bored pile; and the degradable acoustic detection tube 2 can not only realize the quality detection of the prepared bored pile body, but also can use its degradable characteristics to realize non-destructive detection and non-destructive repair of the pile body, and at least part of the degradable sediment cleaning component 3 can cooperate with the degradable acoustic detection tube 2 to form a cavity, and can also re-detect the repaired pile body to make up for the shortcomings of the acoustic detection means and improve the accuracy of pile body quality detection.

[0071] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0072] 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 construction member for reinforced concrete bored piles, characterized in that: It includes a steel cage, a degradable acoustic detection tube and a sediment cleaning component, at least part of the sediment cleaning component is arranged at one end of the steel cage for inserting into a borehole, at least part of the sediment cleaning component located in the borehole is made of degradable material, the degradable acoustic detection tube is fixedly arranged on the inner side of the steel cage along the axial direction of the steel cage and connected to the sediment cleaning component; a sediment cleaning hole and a one-way water inlet hole are opened at the lower end of the sediment cleaning component.

2. The construction member for reinforced concrete bored piles according to claim 1, characterized in that: The sediment cleaning assembly comprises a sleeve, a conduit and a positioning rod, and the sleeve and the conduit are both made of degradable materials; The conduit is located in the steel cage and extends along the axial direction of the steel cage. The positioning rod is detachably connected to the steel cage. The sleeve is sleeved on one end of the steel cage in the axial direction and connected to the degradable acoustic detection tube. The sediment cleaning hole and the one-way water inlet hole are arranged on the sleeve. One end of the conduit is connected to the positioning rod, and the other end is connected to the sediment cleaning hole through the sleeve. Under the action of negative pressure, the sediment in the drill hole can flow through the sediment cleaning hole and be discharged through the conduit.

3. The construction member for reinforced concrete bored piles according to claim 2, characterized in that: The sediment cleaning hole is opened in the middle of the sleeve, and the one-way water inlet holes are multiple in number and are arranged around the sediment cleaning hole.

4. The construction member for reinforced concrete bored piles according to claim 1, characterized in that: The steel cage comprises main bars, reinforcing bars and spiral bars, the number of the main bars is plural and they are arranged along the axial direction of the steel cage, the reinforcing bars are welded and fixed to the inner side of the main bars, and the spiral bars are welded and fixed to the outer side of the main bars; Wherein, the degradable acoustic detection tube is bundled on the reinforcing rib.

5. The construction method of the construction member for reinforced concrete bored pile according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step S1, preparing construction components for drilling and reinforced concrete cast-in-place piles; Step S2, placing the reinforced concrete bored pile construction component in the borehole, and connecting the sediment cleaning component of the reinforced concrete bored pile construction component to a negative pressure suction device; Step S3: Clean the sediment in the borehole by using the negative pressure suction equipment.

6. The construction method of the construction member for reinforced concrete bored pile according to claim 5, characterized in that: The following steps are also included: Step S4, when the sediment cleaning assembly is in a negative pressure state, pouring concrete into the borehole to obtain a pile body; Step S5: detecting and repairing the pile body through a degradable acoustic detection tube.

7. The construction method of the reinforced concrete bored pile construction member according to claim 6, characterized in that: The step S5 comprises: Step S51, performing ultrasonic testing on the pile body through a degradable acoustic testing tube, and saving the testing data; Step S52, comparing the detection data, performing degradation treatment on the part of the degradable acoustic detection tube to expose the pile body at the suspicious point, and rechecking the pile body at the suspicious point by using a visual probe; when the suspicious point is a first defect, repairing it by using a first repairing method.

8. The construction method of the reinforced concrete bored pile construction member according to claim 7, characterized in that: In the step S52, the first defect is a slight defect, and the first repairing method includes injecting epoxy resin material into the suspicious point having the first defect.

9. The construction method of the construction member for reinforced concrete bored pile according to claim 7, characterized in that: The following steps are also included: Step S6, performing air tightness detection and sealing on the cavity in the pile body, wherein the cavity is formed by the degradation of the degradable acoustic detection tube and the degradable part of the sediment cleaning assembly.

10. The construction method of the construction member for reinforced concrete bored pile according to claim 9, characterized in that: In step S6, the sealing includes: Concrete is poured into the cavity under negative pressure.

Images