Complex site inner ramming carrier pile foundation bearing deformation detection device
The detection device, designed with conductive and insulating layers, solves the problems of accuracy and real-time performance in pile foundation deformation monitoring under complex site conditions, achieving high-precision pile foundation deformation monitoring and ensuring project safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河北水利电力学院
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-19
AI Technical Summary
Existing pile foundation deformation monitoring methods lack accuracy and cannot provide real-time feedback under complex site conditions, and rely on intermittent inspections, posing safety hazards.
The detection device, which employs a conductive layer and an isolation layer design, monitors the axial and lateral settlement deformation of the pile foundation in real time through the electrical signal feedback of the conductive layer. It distinguishes the location by using the numbering and impedance characteristics of the conductive layer, avoiding electrical interference and achieving high-precision monitoring.
It enables real-time and accurate monitoring of pile foundation deformation, improving the safety and stability of the project and reducing errors caused by human intervention.
Smart Images
Figure CN224259467U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pile foundation engineering, specifically a device for detecting the bearing capacity and deformation of rammed earth pile foundations in complex sites. Background Technology
[0002] With the rapid development of the modern construction industry and the increasing complexity of site conditions, pile foundation engineering is being used more and more widely to meet different geological conditions, soil types, and building requirements. As a structure that bears the weight of the building and transfers loads to the deep soil, the stability and bearing capacity of pile foundations directly affect the safety of the project. However, pile foundations are prone to problems such as axial settlement and lateral deformation during use, especially in complex soil environments and construction conditions, where these deformations may pose a potential threat to the overall stability of the project. Therefore, timely and accurate monitoring of pile foundation deformation, especially the axial and lateral settlement of the main reinforcement bars in the pile foundation, has become crucial to ensuring building safety and construction quality.
[0003] Traditional methods for monitoring pile foundation deformation, such as settlement plates, levels, and displacement sensors, can provide deformation data to some extent, but they often suffer from problems such as insufficient monitoring accuracy, inability to reflect deformation in real time, and difficulty in application in complex environments.
[0004] In addition, existing technologies mainly address the bearing deformation of pile foundations through the following methods:
[0005] 1) Patent application CN212514330U discloses a device for monitoring damage to existing building pile foundations. In this patent application, a coaxial cable is pre-embedded in the main reinforcement of the pile foundation. A TDR testing system is used to transmit electromagnetic wave signals in real time, generating feedback signals on the coaxial cable. When an earthquake, landslide, or soil loss occurs near the pile foundation, the pile foundation undergoes lateral shear deformation. This lateral deformation causes shear and tensile deformation in the pre-embedded coaxial cable, altering its characteristic impedance and thus changing the feedback signal of the electromagnetic wave transmitted on the cable. The monitoring platform processes the feedback signal to generate a time-domain curve. Analysis of this curve allows for effective monitoring of pile foundation damage. Compared to other detection methods, this invention offers high accuracy and ease of implementation, making it valuable for practical applications.
[0006] 2) CN221989410U discloses a low-strain method for testing pile foundations. This patent application includes a pile foundation, a mounting frame, a testing component, and a sensing component. The mounting frame is mounted on the pile foundation. The testing component is slidably mounted on the mounting frame and used to test the quality of the pile foundation. The sensing component is mounted on the pile foundation and used to transmit the test results. This invention ensures consistency in parameters such as the force, frequency, and depth of the impact, thereby improving the accuracy of the test data. It can be adjusted according to different testing needs, such as increasing or decreasing the impact force or adjusting the impact frequency, thereby increasing the testing flexibility and adaptability. Furthermore, it requires no manual intervention, reducing interference from human factors and thus improving the reliability of the test results.
[0007] However, the aforementioned existing technologies often rely on intermittent inspections and manual intervention when applied. In addition, some detection methods are relatively expensive and cannot achieve real-time tracking of subtle deformation changes in pile foundations during long-term use. This may result in failure to detect excessive deformation in time and take corresponding measures, posing certain safety hazards. Utility Model Content
[0008] The purpose of this invention is to provide a device for detecting the bearing capacity and deformation of rammed earth pile foundations in complex sites, which can monitor the axial and lateral settlement deformation of pile foundations in real time and accurately under complex site conditions, thereby improving the safety and stability of the project.
[0009] To achieve the above objectives, this utility model provides the following technical solution: a bearing deformation detection device for rammed pile foundations in complex sites. The detection device is configured on the bottom side or left and right sides of the main reinforcement of the pile foundation in the rammed site. The device can perform long-term, continuous monitoring and provide continuous data support during the use of the pile foundation. It can promptly detect potential problems in the pile foundation, such as settlement deformation or lateral displacement, thereby providing long-term assurance for project safety. The detection device includes a shell, a detection column, and a conductive component. A partition is integrally connected in the middle of the shell, and an opening is provided at the top of the shell. The detection column is located inside the shell and includes a pressure-bearing column body, an elastic element, and a detection end. The pressure-bearing column body is vertically arranged, and its top penetrates the shell and connects to the bottom end of the main reinforcement of the pile foundation. An elastic element is sleeved in the middle of the pressure-bearing column body. The bottom of the pressure-bearing column body passes through a through hole in the middle of the partition and connects to the detection end. A conductive head is provided on the detection end, and multiple conductive layers and isolation layers are distributed alternately on the conductive head.
[0010] Preferably, the conductive component includes a first conductive end, a second conductive end, a conductive circuit, and a detection motherboard. The first conductive end and the second conductive end are respectively fixed inside the housing by a bracket, and the first conductive end and the second conductive end abut against the outside of the conductive head.
[0011] Preferably, the first conductive end and the second conductive end are connected through a conductive circuit.
[0012] Preferably, a detection mainboard is installed on the conductive circuit. When the detection column experiences axial settlement or lateral deformation in the pile foundation, it is compressed and makes contact with conductive layers at different locations, thus transmitting signals to the detection mainboard. The detection mainboard is responsible for receiving the electrical signal feedback from the detection column. When the pile foundation deforms, the detection column will contact conductive layers at different numbers and locations through its conductive head, thereby transmitting electrical signals. By receiving feedback signals from the detection column, the detection mainboard analyzes the changes in the electrical characteristics of the conductive layers and then calculates the deformation of the pile foundation (such as axial settlement or lateral deformation). Based on the electrical signals from different conductive layers, it accurately determines the deformation at various locations of the pile foundation and generates corresponding monitoring data. The detection mainboard not only processes the feedback signals from the conductive layers but also converts these signals into recognizable data outputs. The mainboard converts the calculated deformation and displacement information into standardized signal or data formats and transmits the data to an external monitoring platform or data recording system through a connected transmission module.
[0013] Preferably, the thickness of the conductive layer is greater than that of the isolation layer, which is made of insulating material. The main function of the isolation layer is to effectively separate multiple conductive layers and prevent electrical interference between them. When the pile foundation deforms, the detection column will displace according to the amount of deformation, contacting the conductive layers at different locations through its conductive head and generating electrical signal feedback. Since the conductive layers differ in location, number, and impedance, the isolation layer ensures that each conductive layer works independently, avoiding electrical interference between adjacent conductive layers, thereby guaranteeing the accuracy and reliability of the signal. Furthermore, the design of the isolation layer allows conductive layers at different locations to be distinguished based on their number and impedance characteristics. When the detection column displaces and contacts the conductive layer, due to the different positions and impedances of each conductive layer, the detection system can infer the actual displacement of the detection column by analyzing the number of the conductive layer and the changes in the signal. This design can accurately monitor the deformation of the pile foundation (such as axial settlement or lateral deformation), thereby achieving high-precision deformation monitoring of the pile foundation.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] This invention enables real-time and accurate monitoring of axial and lateral settlement deformation of pile foundations under complex site conditions, thereby improving the safety and stability of the project.
[0016] The specific technical effects include the following:
[0017] This invention's detection device can monitor the axial and lateral settlement deformation of the main reinforcement bars in pile foundations in real time and continuously. Through an innovative design of conductive and insulating layers, the detection column accurately reflects the deformation amount when pile foundation deformation occurs, achieving high-precision monitoring of pile foundation deformation. Compared to traditional monitoring methods, it can react rapidly to even minor deformations in the pile foundation, ensuring timely understanding of the deformation situation, thereby improving monitoring accuracy and response speed.
[0018] This invention features a high degree of automation, automatically triggering signals and transmitting them to the main control system when pile foundation deformation occurs, thus avoiding errors caused by manual measurement and judgment in traditional methods. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the conductive head and conductive assembly of this utility model;
[0021] Figure 3 This is a diagram illustrating the practical application of this utility model.
[0022] In the picture:
[0023] 1. Housing; 2. Detection column; 201. Pressure-bearing column; 202. Elastic element; 203. Detection end; 3. Conductive head; 301. Conductive layer; 302. Isolation layer; 4. Conductive component; 401. First conductive end; 402. Second conductive end; 403. Conductive circuit; 404. Detection main board. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0025] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0026] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0027] Example 1: Please refer to Figure 1 This utility model provides a technical solution: a bearing deformation detection device for rammed pile foundations in complex sites. The detection device is configured on the bottom side or left and right sides of the main reinforcement of the pile foundation in the rammed site. The detection device includes a shell 1, a detection column 2, and a conductive component 4. The shell 1 has a partition integrally connected in the middle, and the top of the shell 1 has an opening. The detection column 2 is located inside the shell 1 and includes a bearing column 201, an elastic element 202, and a detection end 203. The bearing column 201 is vertically arranged, and its top penetrates the shell 1 and connects to the bottom end of the main reinforcement of the pile foundation. The elastic element 202 is sleeved in the middle of the bearing column 201. The bottom of the bearing column 201 passes through the through hole in the middle of the partition and connects to the detection end 203. The detection end 203 is provided with a conductive head 3, and the conductive head 3 is provided with multiple conductive layers 301 and isolation layers 302 distributed alternately. The detection device can perform long-term and continuous monitoring and can continuously provide data support during the use of the pile foundation. It can promptly detect potential problems in pile foundations, such as settlement deformation or lateral displacement, thereby providing long-term protection for project safety.
[0028] Please see Figure 2 In this embodiment, the conductive component 4 includes a first conductive end 401, a second conductive end 402, a conductive circuit 403, and a detection main board 404. The first conductive end 401 and the second conductive end 402 are respectively fixed in the housing 1 by brackets, and the first conductive end 401 and the second conductive end 402 abut against the outside of the conductive head 3.
[0029] In this embodiment, the first conductive terminal 401 and the second conductive terminal 402 are connected through a conductive circuit 403.
[0030] Please see Figure 3In this embodiment, a detection main board 404 is provided on the conductive circuit 403. When the pile foundation experiences axial settlement or lateral deformation, the detection column 2 is compressed and contacts the conductive layers 301 at different locations, thus transmitting signals to the detection main board 404. The detection main board 404 is responsible for receiving the electrical signal feedback from the detection column 2. When the pile foundation deforms, the detection column 2 contacts the conductive layers 301 at different numbers and locations through the conductive head 3, thereby transmitting electrical signals. The detection main board 404 analyzes the changes in the electrical characteristics of the conductive layers 301 by receiving the feedback signals from the detection column 2, and then calculates the amount of deformation of the pile foundation (such as axial settlement or lateral deformation). Based on the electrical signals of different conductive layers 301, it accurately determines the deformation at each location of the pile foundation and generates corresponding monitoring data.
[0031] In this embodiment, the thickness of the conductive layer 301 is greater than the thickness of the isolation layer 302, which is made of insulating material. The main function of the isolation layer 302 is to effectively separate the multiple conductive layers 301, preventing electrical interference between them. When the pile foundation deforms, the detection column 2 will displace according to the amount of deformation, and will contact the conductive layers 301 at different positions through the conductive head 3 on it, forming an electrical signal feedback. Since the conductive layers 301 are different in position, number, and impedance, the isolation layer 302 can ensure that each conductive layer 301 works independently, avoiding electrical interference between adjacent conductive layers 301, thereby ensuring the accuracy and reliability of the signal. In addition, the design of the isolation layer 302 allows the conductive layers 301 at different positions to be distinguished according to their number and impedance characteristics. When the detection column 2 displaces and contacts the conductive layers 301, since the position and impedance of each conductive layer 301 are different, the detection system can infer the actual displacement of the detection column 2 by analyzing the number of the conductive layers 301 and the changes in the signal. This design enables precise monitoring of pile foundation deformation (such as axial settlement or lateral deformation), thereby achieving high-precision deformation monitoring of pile foundations.
[0032] Example 2: The detection motherboard 404 not only processes the feedback signals from the conductive layer 301, but also converts these signals into recognizable data output. The motherboard converts the calculated deformation and displacement information into standardized signal or data formats, and transmits the data to an external monitoring platform or data recording system through a connected transmission module.
[0033] In conjunction with Embodiments 1 and 2 above, this utility model also provides the detection principle of the above-mentioned detection device: When the pile foundation undergoes axial or lateral deformation, the detection column 2 inside the housing 1 will be compressed or displaced, causing its conductive head 3 to come into contact with conductive layers 301 with different numbers and positions. Due to the numbering and positional characteristics of the conductive layers 301, the detection main board 404 can identify the changes in the energization state of the conductive layers 301, thereby inferring the displacement of the detection column 2 and realizing accurate monitoring of the pile foundation deformation.
[0034] It is worth noting that the entire device is controlled by a central control system. Since the equipment matched with the control system is common equipment and belongs to existing mature technology, its electrical connection relationship and specific circuit structure will not be described in detail here.
[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A device for detecting bearing capacity and deformation of rammed earth pile foundations in complex sites, characterized in that, The detection device is configured on the bottom side or left and right sides of the main reinforcement of the pile foundation in the compaction site. The detection device is used to detect the axial and lateral settlement deformation of the main reinforcement of the pile foundation. The detection device includes a shell (1), a detection column (2) and a conductive component (4). The shell (1) is integrally connected with a partition in the middle and has an opening at the top. The detection column (2) is located inside the shell (1). The detection column (2) includes a pressure-bearing column (201), an elastic element (202) and a detection end (203). The pressure-bearing column (201) is vertically arranged and its top penetrates through the shell (1) and is connected to the bottom end of the main reinforcement of the pile foundation. The pressure-bearing column (201) is fitted with an elastic element (202) in the middle. The bottom of the pressure-bearing column (201) passes through the through hole in the middle of the partition and is connected to the detection end (203). The detection end (203) is provided with a conductive head (3).
2. The device for detecting bearing capacity and deformation of rammed earth pile foundation in complex sites according to claim 1, characterized in that: The conductive head (3) is provided with multiple conductive layers (301) and isolation layers (302) that are distributed alternately at intervals.
3. The device for detecting bearing capacity and deformation of rammed earth pile foundation in complex sites according to claim 1, characterized in that: The conductive component (4) includes a first conductive end (401), a second conductive end (402), a conductive circuit (403), and a detection motherboard (404). The first conductive end (401) and the second conductive end (402) are respectively fixed in the housing (1) by a bracket. The first conductive end (401) and the second conductive end (402) abut against the outside of the conductive head (3).
4. The device for detecting bearing capacity and deformation of rammed earth pile foundation in complex sites according to claim 3, characterized in that: The first conductive end (401) and the second conductive end (402) are connected through a conductive circuit (403).
5. The device for detecting bearing capacity and deformation of rammed earth pile foundation in complex sites according to claim 3, characterized in that: The conductive circuit (403) is equipped with a detection main board (404). When the pile foundation experiences axial settlement or lateral deformation, the detection column (2) is compressed and makes contact with the conductive layer (301) at different locations to conduct signals to the detection main board (404).
6. The device for detecting bearing capacity and deformation of rammed earth pile foundation in complex sites according to claim 2, characterized in that: The thickness of the conductive layer (301) is greater than the thickness of the insulating layer (302), and the insulating layer (302) is made of insulating material.