Bridge pile foundation compression layer thickness monitoring device in soft soil area

Abstract

The application discloses a kind of soft soil area bridge pile foundation compression layer thickness monitoring equipment, including cap, liquid level settlement meter, single-point settlement meter, data acquisition module and remote control terminal, the side end of the cap is equipped with shielding cavity;The shielding cavity is equipped with opening;The shielding cavity is connected with the data acquisition module by telescopic device;The telescopic device is used to drive the data acquisition module to enter / exit the shielding cavity through the opening.The soft soil area bridge pile foundation compression layer thickness monitoring equipment can effectively protect the data acquisition module, reduce the risk of weathering and rust failure of the data acquisition module shell, meet the normal working requirements of the soft soil area bridge pile foundation compression layer thickness monitoring equipment, and improve the use safety index of the equipment.

Description

Technical Field

[0001] This application relates to the field of bridge engineering technology, and in particular to a device for monitoring the thickness of the compression layer of bridge pile foundations in soft soil areas. Background Technology

[0002] Soft soil in my country is mainly distributed in the southeastern coastal areas, especially in economically developed coastal cities. Many of the railway lines under construction are located in areas with highly compressible soft soil. Soft soil and loose soil are characterized by high compressibility, high water content, low strength, poor permeability, and long-term consolidation deformation. The change in soft soil foundations involves a long process from rapid initial settlement to eventual stabilization, posing a severe challenge to railway lines with strict settlement requirements.

[0003] Traditional settlement calculations are mostly based on empirically modified formulas derived from local statistical data. These formulas largely rely on the assumptions of linear elastic continuous media, which differ somewhat from reality. Furthermore, the thickness of the compression layer in bridge pile foundations in soft soil areas lacks empirical data, yet this thickness is one of the most significant factors influencing settlement calculations, and its accuracy directly impacts the results. Therefore, research on the thickness of the compression layer in bridge pile foundations in soft soil areas is of great importance for future engineering design and research.

[0004] To this end, Chinese utility model patent CN205369205 U discloses a system for monitoring the thickness of the compressible layer of bridge pile foundations in soft soil areas, such as... Figure 1 As shown, the system includes a foundation 1, a liquid level settlement gauge 2, a single-point settlement gauge 3, a data acquisition module 4, and a remote control terminal 5. The liquid level settlement gauge 2 is installed at the top of the foundation 1. Two single-point settlement gauges 3 are installed between the foundation 1 and the soil layer. The liquid level settlement gauge 2 and the single-point settlement gauge 3 are connected to the data acquisition module 4. The data acquisition module 4 transmits the acquired monitoring data to the remote control terminal 5 via GPRS. This bridge pile foundation compression layer thickness monitoring system in soft soil areas fully utilizes the advantages of both the single-point settlement gauge 3 and the liquid level settlement gauge 2, providing accurate measurements and convenient construction in engineering projects. It enables settlement monitoring of bridge pile foundations in soft soil foundations. However, this bridge pile foundation compression layer thickness monitoring system in soft soil areas still has the following technical defects:

[0005] Data acquisition module 4 is exposed to the outside of the bridge pile foundation compression layer thickness monitoring equipment in soft soil areas for a long time. Under long-term exposure to sun and rain, the outer shell of data acquisition module 4 is prone to weathering, and the circuit is also prone to rusting and failure, which can lead to system failure or leakage. This not only fails to meet the normal working requirements of the bridge pile foundation compression layer thickness monitoring equipment in soft soil areas, but also leaves safety hazards. Utility Model Content

[0006] In order to solve the technical problems existing in the prior art, the purpose of this application is to provide a monitoring device for the thickness of the compression layer of bridge pile foundation in soft soil areas, which can effectively protect the data acquisition module, reduce the risk of weathering of the data acquisition module shell and rusting of the circuit, meet the normal operation requirements of the monitoring device for the thickness of the compression layer of bridge pile foundation in soft soil areas, and improve the safety index of the device.

[0007] To achieve the aforementioned objectives, the technical solution adopted in this application is as follows:

[0008] A device for monitoring the thickness of the compressible layer of bridge pile foundations in soft soil areas includes a pile cap, a liquid level settlement gauge, a single-point settlement gauge, a data acquisition module, and a remote control terminal. A shielding cavity is provided on one side of the pile cap; the shielding cavity has an opening; the shielding cavity is connected to the data acquisition module through a telescopic device; the telescopic device is used to drive the data acquisition module to enter / exit the shielding cavity through the opening.

[0009] Furthermore, the retractable device is a cylinder-driven device.

[0010] Preferably, the cylinder transmission device includes a cylinder, a piston, and a connecting rod; the piston is disposed in the cylinder and slidably connected to the cylinder; one end of the connecting rod is fixedly connected to the piston, and the other end is fixedly connected to the data acquisition module.

[0011] Alternatively, the retractable device may be a screw drive device.

[0012] Preferably, the lead screw drive device includes a motor, a lead screw, and a nut; the nut is fixed to the bottom of the data acquisition module; one end of the lead screw is inserted into the nut, and the other end is connected to the motor for transmission.

[0013] Alternatively, the retractable device may be an elastic transmission device.

[0014] Preferably, the elastic transmission device includes a latch and a spring disposed in the shielding cavity, and a hook disposed on the data acquisition module for engaging the latch; the latch is disposed opposite to the opening; the data acquisition module is connected to the shielding cavity through the spring.

[0015] Furthermore, the shielding cavity includes a bottom plate, a top plate, a front side plate, and a rear side plate; the top and bottom ends of the front side plate are respectively engaged with the top plate and the bottom plate, and the top and bottom ends of the rear side plate are respectively engaged with the top plate and the bottom plate, forming a cavity for accommodating the data acquisition module; the opening is located on the left end of the shielding cavity.

[0016] Preferably, the top and bottom ends of the front side plate are respectively provided with a front upper latch and a front lower latch; the top and bottom ends of the rear side plate are respectively provided with a rear upper latch and a rear lower latch; along the width direction of the bottom plate, the bottom plate is provided with a plurality of front bottom latches for latching the front lower latch and a plurality of rear bottom latches for latching the rear lower latch; along the width direction of the top plate, the top plate is provided with a plurality of front top latches for latching the front upper latch and a plurality of rear top latches for latching the rear lower latch.

[0017] More preferably, the front top latch and the front bottom latch are in one-to-one correspondence, and the corresponding front top latch is directly opposite the corresponding front bottom latch; the rear top latch and the rear bottom latch are in one-to-one correspondence, and the corresponding rear top latch is directly opposite the corresponding rear bottom latch.

[0018] Compared with the prior art, this application has at least the following technical effects:

[0019] This application's bridge pile foundation compression layer thickness monitoring device in soft soil areas uses a shielding cavity to house the data acquisition module. In case of severe weather, a retractable device can be used to retract the data acquisition module into the shielding cavity through an opening. After the severe weather, the retractable device can be used to push the data acquisition module out of the shielding cavity through the opening. This effectively protects the data acquisition module, reduces the risk of weathering of the module's casing and rusting of the circuitry, meets the normal operating requirements of the bridge pile foundation compression layer thickness monitoring device in soft soil areas, improves the safety index of the equipment, and extends the service life of the monitoring device. Attached Figure Description

[0020] Figure 1 A schematic diagram of the existing bridge pile foundation compression layer thickness monitoring system in soft soil areas;

[0021] Figure 2 This is a schematic diagram of a preferred embodiment of the bridge pile foundation compression layer thickness monitoring device in soft soil areas according to this application;

[0022] Figure 3 This is a schematic diagram of the structure of a first preferred embodiment of the telescopic device for monitoring the thickness of the compressible layer of bridge pile foundation in soft soil areas according to this application.

[0023] Figure 4 This is a schematic diagram of the second preferred embodiment of the telescopic device of the bridge pile foundation compression layer thickness monitoring equipment in soft soil areas according to this application;

[0024] Figure 5 This is a schematic diagram showing the structure of the retractable device of the bridge pile foundation compression layer thickness monitoring equipment in soft soil areas according to the third preferred embodiment of this application, connected to the data acquisition module.

[0025] in, Figure 1 The annotations in the attached figures are explained as follows:

[0026] 1. Foundation; 2. Liquid level sedimentation gauge; 3. Single-point sedimentation gauge; 4. Data acquisition module; 5. Remote control terminal.

[0027] Figures 2 to 5 The annotations in the attached figures are explained as follows:

[0028] 1. Foundation; 2. Liquid level sedimentation gauge; 3. Single-point sedimentation gauge; 4. Data acquisition module; 5. Remote control terminal; 6. Sensor; 7. Shielding cavity; 71. Opening; 72. Base plate; 73. Top plate; 74. Front side plate; 75. Rear side plate; 76. Cavity; 77. Spring latch; 78. Right end of shielding cavity; 8. Telescopic device; 81. Cylinder; 82. Connecting rod; 83. Motor; 84. Lead screw; 85. Nut; 86. Base; 87. Guide rail; 88. Spring; 89. Hook. Detailed Implementation

[0029] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present application are used to explain the present application, but are not intended to limit the present application.

[0030] It should be noted that all directional indicators (such as up, down, left, right, front, back, upper end, lower end, top, bottom, etc.) in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0031] In this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral part; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0033] The present application will be further described in detail below with reference to the accompanying drawings.

[0034] Example 1

[0035] Figures 2 to 3 The image shows a bridge pile foundation compression layer thickness monitoring device for soft soil areas according to this application, including a pile cap 1, a liquid level settlement gauge 2, a single-point settlement gauge 3, a data acquisition module 4, and a remote control terminal 5. Four single-point settlement gauges 3 are installed between the pile cap 1 and the soil layer. The liquid level settlement gauges 2 and the single-point settlement gauges 3 are connected to the data acquisition module 4. The data acquisition module 4 transmits the acquired monitoring data to the remote control terminal 5 via GPRS. Sensors 6 are installed on each single-point settlement gauge 3.

[0036] The support platform 1 has a shielding cavity 7 on one side; the shielding cavity 7 has an opening 71; the shielding cavity 7 is connected to the data acquisition module 4 through a telescopic device 8; the telescopic device 8 is used to drive the data acquisition module 4 to enter / exit the shielding cavity 7 through the opening 71.

[0037] The bridge pile foundation compression layer thickness monitoring device in this application uses a shielding cavity 7 to house the data acquisition module 4. In the event of severe weather, a retractable device 8 can be used to retract the data acquisition module 4 into the shielding cavity 7 through the opening 71. After the severe weather, the retractable device 8 can be used to push the data acquisition module 4 out of the shielding cavity 7 through the opening 71. This effectively protects the data acquisition module 4, reduces the risk of weathering of the outer shell of the data acquisition module 4 and rusting of the circuit, meets the normal operation requirements of the bridge pile foundation compression layer thickness monitoring device in soft soil areas, improves the safety index of the device, and extends the service life of the bridge pile foundation compression layer thickness monitoring device in soft soil areas.

[0038] In this embodiment, the retractable device 8 is a cylinder 81 transmission device. Specifically, the cylinder 81 transmission device includes a cylinder 81, a piston (not shown), and a connecting rod 82; the piston (not shown) is disposed within the cylinder 81 and slidably connected to the cylinder 81; one end of the connecting rod 82 is fixedly connected to the piston (not shown), and the other end is fixedly connected to the data acquisition module 4. The cylinder 81 drives the piston (not shown) to retract and slide within the cylinder 81, and the connecting rod 82 drives the data acquisition module 4 to move in and out of the shielding cavity 7, thereby realizing the function of storing and extending the data acquisition module 4.

[0039] Specifically, the shielding cavity 7 includes a bottom plate 72, a top plate 73, a front side plate 74, and a rear side plate 75; the top and bottom ends of the front side plate 74 are respectively engaged with the top plate 73 and the bottom plate 72, and the top and bottom ends of the rear side plate 75 are respectively engaged with the top plate 73 and the bottom plate 72, forming a cavity 76 for accommodating the data acquisition module 4; the opening 71 is provided on the left end of the shielding cavity 7, thereby realizing the detachable connection of the shielding cavity 7, which facilitates the assembly and disassembly of the shielding cavity 7 on the support platform 1, and facilitates carrying and equipment maintenance.

[0040] Specifically, the front side plate 74 has a front upper latch (not shown) and a front lower latch (not shown) at its top and bottom ends, respectively; the rear side plate 75 has a rear upper latch (not shown) and a rear lower latch (not shown) at its top and bottom ends, respectively; along the width direction of the bottom plate 72, the bottom plate 72 has a plurality of front bottom latches (not shown) for latching the front lower latch (not shown) and a plurality of rear bottom latches (not shown) for latching the rear lower latch (not shown); along the width direction of the top plate 73, the top plate 73 has a plurality of front top latches (not shown) for latching the front upper latch (not shown) and a plurality of rear top latches (not shown) for latching the rear lower latch (not shown).

[0041] By setting several front bottom latches (not shown) and rear bottom latches (not shown) in the width direction of the base plate 72, and several front top latches (not shown) and rear top latches (not shown) in the width direction of the top plate 73, respectively connecting the rear upper latch (not shown), rear lower latch (not shown), front upper latch (not shown), and front lower latch (not shown), the size of the shielding cavity 7 is adjustable, satisfying people's requirements for the adjustability of the size of the data acquisition module 4; with several front bottom latches (not shown), rear bottom latches (not shown), front top latches (not shown), and rear top latches (not shown), the size of the shielding cavity 7 is adjustable in several levels, satisfying the user's diverse functional needs for the monitoring equipment for the thickness of the compression layer of bridge pile foundation in soft soil areas of this application. For those skilled in the art, the specific size of the shielding cavity 7 can be adjusted to different levels according to the size of the data acquisition module 4. However, regardless of which specific level is selected, it should fall within the protection scope of the bridge pile foundation compression layer thickness monitoring device in soft soil areas of this application.

[0042] Specifically, the front top latch (not shown) and the front bottom latch (not shown) correspond one-to-one, and the corresponding front top latch (not shown) faces the corresponding front bottom latch (not shown); the rear top latch (not shown) and the rear bottom latch (not shown) correspond one-to-one, and the corresponding rear top latch (not shown) faces the corresponding rear bottom latch (not shown), thereby effectively ensuring the regularity of the shape of the formed shielding cavity 7.

[0043] Example 2

[0044] The second preferred embodiment of the bridge pile foundation compression layer thickness monitoring device in soft soil areas of this application, which is related to... Figures 2 to 3 The only difference in the first preferred embodiment shown is that: Figure 4 As shown, the retractable device 8 is a lead screw 84 transmission device, which can also connect the data acquisition module 4 in a retractable manner.

[0045] Specifically, the lead screw 84 transmission device includes a motor 83, a lead screw 84, and a nut 85; the nut 85 is fixed to the bottom of the data acquisition module 4; one end of the lead screw 84 is fitted into the nut 85, and the other end is connected to the motor 83. The motor 83 drives the lead screw 84 to rotate. Since the lead screw 84 and the nut 85 are threadedly connected, the rotational motion of the lead screw 84 is converted into the translational motion of the nut 85. This, in turn, causes the data acquisition module 4 to translate through the nut 85, allowing it to enter the shielding cavity 7 through the opening 71. When the motor 83 drives the lead screw 84 to rotate in the opposite direction, this reverse rotation of the lead screw 84 again causes the nut 85 to translate in the opposite direction, allowing the data acquisition module 4 to translate through the opening 71 and exit the shielding cavity 7.

[0046] Compared to the cylinder-driven telescopic device 8 in Embodiment 1, the lead screw 84-driven telescopic device 8 in this embodiment has the following advantages:

[0047] (1) Under the same load, a smaller power motor 83 can be selected to reduce energy consumption.

[0048] (2) The low friction characteristics support high-speed motion, with small starting and braking inertia and rapid response.

[0049] (3) Regular lubrication (such as adding grease) is sufficient, but the maintenance cycle is relatively long.

[0050] In this embodiment, the nut 85 is preferably a double nut 85 structure, which can eliminate the backlash and control the positioning error to the micrometer level (e.g., ±0.01mm / 300mm).

[0051] In order to stably fix the data acquisition module 4 on the nut 85, the nut 85 is fixedly connected to the data acquisition module 4 through a base 86; the left and right ends of the base 86 are also provided with guide holes (not shown in the figure), and each guide hole is provided with a guide rail 87 to guide the movement direction of the base 86 and make the movement balance of the base 86 better.

[0052] Example 3

[0053] The second preferred embodiment of the bridge pile foundation compression layer thickness monitoring device in soft soil areas of this application, which is related to... Figures 2 to 3 The only difference in the first preferred embodiment shown is that: Figure 5 As shown, the retractable device 8 is an elastic transmission device, which can also connect the data acquisition module 4 in a retractable manner.

[0054] Specifically, the elastic transmission device includes a spring latch 77 and a spring 88 disposed in the shielding cavity 7, and a hook 89 disposed on the data acquisition module 4 for engaging the spring latch 77; the spring latch 77 is disposed opposite to the opening 71; the data acquisition module 4 is connected to the spring latch 77 of the shielding cavity 7 through the spring 88.

[0055] The data acquisition module 4 is manually pressed into the shielding cavity 7 through the opening 71. When the data acquisition module 4 enters the shielding cavity 7, the hook 89 on the data acquisition module 4 will automatically engage with the spring latch 77 of the shielding cavity 7, thus fixing the data acquisition module 4 in the shielding cavity 7. At this time, the spring 88 is under compression. When it is necessary to remove the data acquisition module 4 from the shielding cavity 7, simply press the data acquisition module 4 into the shielding cavity 7, causing the hook 89 on the data acquisition module 4 to disengage from the spring latch 77. Then, the reverse thrust of the spring 88 will push the data acquisition module 4 out of the shielding cavity 7 through the opening 71.

[0056] Compared to Embodiment 1 and Embodiment 2, which respectively use a cylinder transmission device and a lead screw 84 transmission device as the telescopic device 8, Embodiment 3 uses an elastic transmission device as the telescopic device 8, which has a simpler structure and is easier to maintain, thus helping to reduce the production cost of the bridge pile foundation compression layer thickness monitoring equipment in soft soil areas of this application.

[0057] Specifically, there is one hook 89, which is located in the middle of the right end of the data acquisition module 4. Correspondingly, there is also one spring latch 77, which is located in the middle of the inner wall of the right end 78 of the shielding cavity. This makes the tension between the hook 89 and the spring latch 77 more evenly distributed to the periphery, which not only facilitates the connection of the hook 89 to the spring latch 77, but also helps to improve the connection stability between the hook 89 and the spring latch 77.

[0058] like Figure 5 As shown, in this embodiment, the number of hooks 89 is preferably two, respectively located at the upper right end and lower right end of the data acquisition module 4. Correspondingly, the number of spring clips 77 is also two, respectively located at the upper and lower ends of the inner wall of the right end 78 of the shielding cavity. The hook 89 located at the upper right end of the data acquisition module 4 connects to the spring clip 77 located at the upper end of the inner wall of the right end 78 of the shielding cavity, and the hook 89 located at the lower right end of the data acquisition module 4 connects to the spring clip 77 located at the lower end of the inner wall of the right end of the shielding cavity. By using two hooks 89 to connect two spring clips 77, the connection stability between the data acquisition module 4 and the shielding cavity 7 can be further improved.

[0059] Although the embodiments of this application are described with reference to actual solutions, they do not constitute a limitation on the meaning of this application. Modifications to the implementation schemes and combinations with other schemes based on this specification will be obvious to those skilled in the art.

Claims

1. A monitoring device for the thickness of the compressible layer of bridge pile foundations in soft soil areas, comprising a pile cap, a liquid level settlement gauge, a single-point settlement gauge, a data acquisition module, and a remote control terminal, characterized in that: The support platform has a shielding cavity on one side; the shielding cavity has an opening; the shielding cavity is connected to the data acquisition module through a telescopic device; the telescopic device is used to drive the data acquisition module to enter / exit the shielding cavity through the opening.

2. The monitoring device for the thickness of the compression layer of bridge pile foundations in soft soil areas according to claim 1, characterized in that: The retractable device is a cylinder-driven device.

3. The monitoring device for the thickness of the compression layer of bridge pile foundations in soft soil areas according to claim 2, characterized in that: The cylinder transmission device includes a cylinder, a piston, and a connecting rod; the piston is disposed in the cylinder and slidably connected to the cylinder; one end of the connecting rod is fixedly connected to the piston, and the other end is fixedly connected to the data acquisition module.

4. The monitoring device for the thickness of the compression layer of bridge pile foundations in soft soil areas according to claim 1, characterized in that: The retractable device is a screw drive device.

5. The monitoring device for the thickness of the compression layer of bridge pile foundations in soft soil areas according to claim 4, characterized in that: The lead screw drive device includes a motor, a lead screw, and a nut; the nut is fixed to the bottom of the data acquisition module; one end of the lead screw is inserted into the nut, and the other end is connected to the motor for transmission.

6. The monitoring device for the thickness of the compression layer of bridge pile foundations in soft soil areas according to claim 1, characterized in that: The retractable device is an elastic transmission device.

7. The monitoring device for the thickness of the compressible layer of bridge pile foundations in soft soil areas according to claim 6, characterized in that: The elastic transmission device includes a latch and a spring disposed in the shielding cavity, and a hook disposed on the data acquisition module for engaging the latch; the latch is disposed opposite to the opening; the data acquisition module is connected to the shielding cavity through the spring.

8. The monitoring device for the thickness of the compression layer of bridge pile foundations in soft soil areas according to claim 1, characterized in that: The shielding cavity includes a bottom plate, a top plate, a front side plate, and a rear side plate; the top and bottom ends of the front side plate are respectively engaged with the top plate and the bottom plate, and the top and bottom ends of the rear side plate are respectively engaged with the top plate and the bottom plate, forming a cavity for accommodating the data acquisition module; the opening is located on the left end of the shielding cavity.

9. The monitoring device for the thickness of the compressible layer of bridge pile foundations in soft soil areas according to claim 8, characterized in that: The front side plate has a front upper latch and a front lower latch at its top and bottom ends, respectively; the rear side plate has a rear upper latch and a rear lower latch at its top and bottom ends, respectively; along the width direction of the bottom plate, the bottom plate has a plurality of front bottom latches for latching the front lower latch and a plurality of rear bottom latches for latching the rear lower latch; along the width direction of the top plate, the top plate has a plurality of front top latches for latching the front upper latch and a plurality of rear top latches for latching the rear lower latch.

10. The monitoring device for the thickness of the compression layer of bridge pile foundation in soft soil areas according to claim 9, characterized in that: The front top latch and the front bottom latch are in one-to-one correspondence, and the corresponding front top latch is directly opposite the corresponding front bottom latch; the rear top latch and the rear bottom latch are in one-to-one correspondence, and the corresponding rear top latch is directly opposite the corresponding rear bottom latch.

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