Roadbed settlement observation scale protection structure
By designing threadably connected and disconnected protective pipe and connecting pipe structures in the protective structure of the subgrade settlement observation ruler, combined with the method of fixing the protective pipe with the wing strip, the impact of the protective pipe on the settlement plate and the ruler during construction is solved, ensuring the authenticity of the subgrade settlement observation data.
Patent Information
- Application Number
- CN202421809005.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The protective pipes of existing roadbed settlement observation scales are susceptible to rolling and mechanical collisions during construction, resulting in displacement of settlement plates and scales, affecting the authenticity of roadbed settlement observation data.
A protective structure for subgrade settlement observation ruler is designed, including settlement plate, connecting pipe, protective pipe and ruler. A threaded joint is provided between the lower end of the protective pipe and the upper end of the connecting pipe, and a wing strip is provided on the outer periphery of the protective pipe, and the wing strip is embedded in the subgrade to fix the protective pipe.
Through the threaded connection and disconnection between the protective tube and the connecting tube, the adverse impact of the protective tube on the settlement plate is reduced, ensuring that the settlement plate and ruler truly reflect the settlement changes of the foundation, and improving the authenticity of the roadbed settlement observation data.
Smart Images
Figure CN222862232U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of level measurement, and also to the field of surveying on-site foundation soil after the completion of a foundation structure, in particular to a roadbed settlement observation scale protection structure. Background Art
[0002] The settlement plate is buried in the roadbed, placed horizontally, and a scale is fixed on the top of the settlement plate. By observing the scale later, the settlement data of the roadbed can be obtained. During the roadbed filling process, in order to protect the scale, a protective structure such as a protective pipe needs to be set around the scale to protect the scale.
[0003] At present, PVC pipes or steel pipes are generally installed on the settlement plate as protective pipes. The lower end of the protective pipe is fixedly installed on the settlement plate, and the scale is located inside the protective pipe. During construction, the protective pipe will inevitably be affected by the construction. The protective pipe will vibrate and displace due to rolling, mechanical collision, etc. Due to the fixed connection between the protective pipe and the settlement plate, the protective pipe will cause displacement of the settlement plate and the scale to varying degrees, especially deflection. After the construction is completed, due to the fixed connection between the protective pipe and the settlement plate, the dead weight of the protective pipe and the friction between the protective pipe and the surrounding soil will affect the position of the settlement plate, resulting in the settlement plate and the scale being unable to accurately reflect the actual settlement of the roadbed below it, affecting the authenticity of the roadbed settlement observation data. Utility Model Content
[0004] The utility model provides a roadbed settlement observation scale protection structure, aiming at reducing the adverse effect of a protection pipe on a settlement plate, so that the settlement plate and the scale can truly reflect the settlement of the foundation.
[0005] The technical solution adopted by the utility model is: a roadbed settlement observation scale protection structure, including a settlement plate, a connecting pipe, a protective pipe and a ruler, the settlement plate is arranged horizontally, a connecting pipe is fixed on the top surface of the settlement plate, the diameter of the protective pipe is consistent with the diameter of the connecting pipe, the protective pipe is located above the connecting pipe, the center line of the connecting pipe coincides with the center line of the protective pipe and is vertical, the ruler is fixedly installed on the settlement plate and is located inside the connecting pipe and the protective pipe, the ruler is arranged vertically, the lower part of the settlement plate, the outside of the connecting pipe and the outside of the protective pipe are all filled roadbed, at least one wing strip is provided on the outer periphery of the protective pipe, the wing strip is embedded in the roadbed, a mutually adaptable threaded joint is provided between the lower end of the protective pipe and the upper end of the connecting pipe, and the lower end of the protective pipe is disconnected from the upper end of the connecting pipe.
[0006] In order to make the settlement plate and the roadbed below it more stable, further: at least one through hole is provided between the top surface and the bottom surface of the settlement plate, and an anchor is provided in the through hole, and the anchor is embedded in the roadbed below the settlement plate. The anchor plays a role in fixing the settlement plate to the roadbed below it, and specifically: the anchor is a screw or a bolt.
[0007] In order to ensure the rigidity of the settlement plate, the connecting pipe and the protective pipe, specifically: the settlement plate is a steel plate, and the connecting pipe and the protective pipe are both steel pipes.
[0008] The scale is located at any position inside the connecting tube and the protective tube, preferably in the middle of the connecting tube and the protective tube. Specifically: the scale is located on the center line of the connecting tube and the protective tube.
[0009] In order to make the wing strips more stable after being embedded in the roadbed, further: the wing strips are distributed along the radial direction of the protection tube, the wing strips are in a strip-shaped structure, and the planes of the strip pairs are horizontal.
[0010] According to the thickness of the roadbed, the protection pipe can be a whole pipe or two or more pipe sections connected in series. In order to avoid the protection pipe being too long and affecting the construction, the protection pipe is further formed by at least two pipe sections connected in series, the two adjacent pipe sections are threadedly connected, at least one pipe section is provided with at least one wing strip on the periphery, and the pipe section closest to the connecting pipe is provided with at least one wing strip on the periphery.
[0011] In order to ensure that each pipe section of the protection pipe and the surrounding roadbed are kept stable, further: at least one wing strip is provided on the outer periphery of each pipe section.
[0012] The wing strip is embedded in the roadbed around the protection tube, so that the protection tube or the pipe section constituting the protection tube is fixed to the roadbed around it. In order to balance the force on the wing strip, further: at least two wing strips are arranged at the same height of the protection tube or the pipe section, and each wing strip is distributed at the same central angle along the radial direction of the protection tube or the pipe section. For example, three wing strips of equal length are arranged at the same height of the protection tube or the pipe section, and the central angles corresponding to any two adjacent wing strips are 120°.
[0013] The beneficial effects of the utility model are as follows: a mutually adaptable threaded joint is provided between the lower end of the protection tube and the upper end of the connecting tube, so that the protection tube and the connecting tube can be threadedly connected during the roadbed filling process, so as to avoid the filling material from entering the inside of the connecting tube from between the protection tube and the connecting tube during the roadbed filling process, and to avoid the damage of the scale due to construction, so as to ensure that the scale remains in a vertical state. The protection tube and the connecting tube are threadedly connected, and the protection tube and the connecting tube can be easily disconnected by rotating the protection tube, so that the construction difficulty is low, the efficiency is high, and it is labor-saving and safe. The protection tube can be produced by a factory, and is easy to store, carry, and install, and the product quality is guaranteed. The outer periphery of the protection tube is provided with a wing strip, which is embedded in the roadbed, and the protection tube is fixed in the roadbed around it. In addition, the disconnection between the protection tube and the connecting tube can minimize the influence of the deadweight of the protection tube and the friction between it and the roadbed on the position of the settlement plate, so that the settlement plate can truly reflect the settlement changes of the roadbed at its bottom, thereby ensuring the authenticity of the roadbed settlement observation data. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of an embodiment of the roadbed settlement observation scale protection structure of the utility model on a vertical section.
[0015] Figure 2 It is a top view schematic diagram of another embodiment of the roadbed settlement observation scale protection structure of the utility model.
[0016] Figure 3 yes Figure 2 A perspective structural diagram of the protection tube in the illustrated embodiment.
[0017] Reference numerals: sedimentation plate 1, connecting pipe 2, protection pipe 3, scale 4, wing strip 5, anchor 6. DETAILED DESCRIPTION
[0018] The utility model will be further described below in conjunction with the accompanying drawings.
[0019] like Figure 1 As shown, the utility model includes a roadbed settlement observation scale protection structure, including a settlement plate 1, a connecting pipe 2, a protective pipe 3 and a scale 4. The settlement plate 1 is horizontally arranged in the roadbed where the settlement needs to be measured. In order to ensure the strength of the settlement plate 1, the settlement plate 1 is a metal plate, generally a steel plate. The settlement plate 1 can be in various shapes, such as a rectangle or a circle. In order to make the combination between the settlement plate 1 and the roadbed below it more stable and make the settlement plate 1 accurately reflect the settlement of the roadbed below it, at least one through hole is provided between the top and bottom surfaces of the settlement plate 1, and an anchor 6 is provided in the through hole, and the anchor 6 is embedded in the roadbed below the settlement plate 1. The anchor 6 serves to fix the settlement plate 1 to the roadbed below it, for example, the anchor 6 is a screw or a bolt. The anchors 6 are preferably evenly arranged on the settlement plate 1, and the anchors 6 are generally arranged vertically. For example, the settlement plate 1 is rectangular, and through holes are respectively provided at the four corners of the settlement plate 1, and each through hole is respectively provided with an anchor 6, see Figure 2 .
[0020] A connecting pipe 2 is fixed to the top surface of the settlement plate 1. The connecting pipe 2 is used to temporarily connect the protective pipe 3 during construction, so that the protective pipe 3 remains relatively fixed, thereby protecting the connecting pipe 2 and the scale 4 inside the protective pipe 3. The center line of the connecting pipe 2 is perpendicular to the plane corresponding to the settlement plate 1. The lower end of the connecting pipe 2 is fixedly connected to the settlement plate 1, and the upper end of the connecting pipe 2 is provided with a threaded joint adapted to the protective pipe 3. In order to ensure the strength of the connecting pipe 2, the connecting pipe 2 is made of metal, generally a steel pipe. The connecting pipe 2 can be fixed to the settlement plate 1 by mechanical connection or by welding. For example, the connecting pipe 2 is a steel pipe with a length of 10.0 cm and a wall thickness of 1.0 cm. The lower end of the steel pipe is welded to the top surface of the settlement plate 1, and the upper end of the steel pipe is provided with an internal thread with a depth of 5.0 cm and a wall thickness of 0.5 cm.
[0021] The diameter of the protection tube 3 is consistent with the diameter of the connecting tube 2. The protection tube 3 is located above the connecting tube 2. The center line of the connecting tube 2 coincides with and is vertical to the center line of the protection tube 3. A mutually adaptable threaded joint is provided between the lower end of the protection tube 3 and the upper end of the connecting tube 2, so that the connecting tube 2 can be temporarily connected to the joint at the lower end of the protection tube 3 during construction. The lower end of the protection tube 3 is disconnected from the upper end of the connecting tube 2 after the roadbed is filled to a certain depth of the protection tube 3. In order to ensure the rigidity of the connecting tube 2 and the protection tube 3, the connecting tube 2 and the protection tube 3 are both metal tubes, for example, the connecting tube 2 and the protection tube 3 are both steel tubes. For example, the connecting tube 2 and the protection tube 3 are both steel tubes with an inner diameter of 10.0 cm and a wall thickness of 1.0 cm. The joint at the upper end of the connecting tube 2 is provided with an external thread, and the joint at the lower end of the protection tube 3 is provided with an adaptable internal thread. For example, the step length of the joints of the connecting tube 2 and the protection tube 3 is 5.0 cm, and the wall thickness of the threaded section is 0.5 cm.
[0022] The scale 4 is fixedly mounted on the settlement plate 1 and is located inside the connecting pipe 2 and the protective pipe 3. The scale 4 is arranged vertically. The scale 4 is located at any position inside the connecting pipe 2 and the protective pipe 3, preferably in the middle of the connecting pipe 2 and the protective pipe 3. At this time, the scale 4 is located on the center line of the connecting pipe 2 and the protective pipe 3. The lower part of the settlement plate 1, the outside of the connecting pipe 2 and the outside of the protective pipe 3 are all filled roadbeds. At least one wing strip 5 is provided on the periphery of the protective pipe 3. The wing strip 5 is embedded in the roadbed so that the protective pipe 3 is fixed in the roadbed filling material around it. The wing strip 5 can be embedded in the roadbed to fix the protective pipe 3 in the roadbed filling material around it, so the wing strip 5 can be in various shapes such as strips, plates, blocks, etc. In order to make the wing strip 5 more stable after being embedded in the roadbed, the wing strip 5 is distributed along the radial direction of the protective pipe 3. The wing strip 5 is in a strip-like structure and the plane of the strip pair is horizontal.
[0023] According to the thickness of the roadbed, the protection tube 3 can be an integral pipe, that is, the protection tube 3 is an inseparable, complete pipe, or it can be formed by connecting two or more sections of pipe in series. In order to avoid the protection tube 3 being too long and affecting the construction, the protection tube 3 is preferably formed by connecting at least two sections of pipe in series, and the two adjacent sections of pipe are threadedly connected, that is, mutually adaptable joints are set at both ends of the pipe. The lengths of each section of the pipe can be equal or unequal. For example, the length of the pipe section is 1.0m, 1.3m, 1.5m and other specifications, which is convenient for combination and use according to actual needs during construction. When the protection tube 3 is connected by at least two sections of pipe, at least one section of the pipe is provided with at least one wing strip 5 on the periphery, and at least one wing strip 5 is provided on the periphery of the pipe section closest to the connecting pipe 2. In order to firmly connect each section of the protection tube 3 with the roadbed around it, it is best to have at least one wing strip 5 on the periphery of each section of the pipe. The wing strips 5 are embedded in the roadbed around the protection pipe 3, so that the protection pipe 3 or the pipe section constituting the protection pipe 3 is fixed to the roadbed around it. In order to balance the force of the wing strips 5 and reduce the adverse effects of the wing strips 5 on the construction, the wing strips 5 are arranged at the same height of the protection pipe 3 or the pipe section, and there are at least two wing strips 5 at this height, and each wing strip 5 is distributed at the same central angle along the radial direction of the protection pipe 3 or the pipe section. For example, see Figure 2 and Figure 3 Three wing strips 5 of equal length are arranged at the same height of the protection tube 3 or the tube section, and the central angle corresponding to any two adjacent wing strips 5 is 120°.
[0024] The settlement plate 1 is connected to the foundation by screws or bolts, and the scale 4 is installed at the center of the settlement plate 1. A pipe section is passed through the scale 4 and connected to the upper end of the connecting pipe 2. When the roadbed is constructed to a certain height, the pipe section is rotated to disengage the connecting pipe 2, and then the filling is continued, and the next level of pipe section is connected as needed until the filling is completed. The connecting pipe 2 and the protective pipe 3 are first threadedly connected and then disconnected during the filling, thereby minimizing the deadweight of the protective pipe and the influence of the friction between the protective pipe and the filling body on the position of the settlement plate 1, so that the settlement plate 1 can truly reflect the settlement changes of the roadbed at its bottom, thereby ensuring the authenticity of the roadbed settlement observation data.
Claims
1. A roadbed settlement observation scale protection structure, comprising a settlement plate (1), a connecting pipe (2), a protection pipe (3) and a scale (4), wherein the settlement plate (1) is arranged horizontally, a connecting pipe (2) is fixed on the top surface of the settlement plate (1), the diameter of the protection pipe (3) is consistent with the diameter of the connecting pipe (2), the protection pipe (3) is located above the connecting pipe (2), the center line of the connecting pipe (2) coincides with the center line of the protection pipe (3) and is vertical, the scale (4) is fixedly installed on the settlement plate (1) and is located inside the connecting pipe (2) and the protection pipe (3), the scale (4) is arranged vertically, the lower part of the settlement plate (1), the outside of the connecting pipe (2) and the outside of the protection pipe (3) are all filled roadbed, and the characteristics are: At least one wing strip (5) is provided on the outer periphery of the protection pipe (3), the wing strip (5) is embedded in the roadbed, a mutually adaptable threaded joint is provided between the lower end of the protection pipe (3) and the upper end of the connecting pipe (2), and the lower end of the protection pipe (3) and the upper end of the connecting pipe (2) are disconnected.
2. The roadbed settlement observation scale protection structure according to claim 1, characterized in that: At least one through hole is provided between the top surface and the bottom surface of the settlement plate (1), an anchor (6) is provided in the through hole, and the anchor (6) is embedded in the roadbed below the settlement plate (1).
3. The roadbed settlement observation scale protection structure according to claim 2, characterized in that: The anchoring member (6) is a screw or a bolt.
4. The roadbed settlement observation scale protection structure according to claim 1, characterized in that: The sedimentation plate (1) is a steel plate, and the connecting pipe (2) and the protection pipe (3) are both steel pipes.
5. The roadbed settlement observation scale protection structure according to claim 1, characterized in that: The scale (4) is located on the center line of the connecting tube (2) and the protective tube (3).
6. The roadbed settlement observation scale protection structure according to claim 1, characterized in that: The wing strips (5) are distributed along the radial direction of the protection tube (3), the wing strips (5) are in a strip-shaped structure, and the planes of the strip pairs are horizontal.
7. The roadbed settlement observation scale protection structure according to any one of claims 1 to 6, characterized in that: The protective tube (3) is an integral pipe fitting; or, the protective tube (3) is formed by at least two pipe sections connected in series, two adjacent pipe sections are threadedly connected, at least one pipe section is provided with at least one wing strip (5) on its outer periphery, and the pipe section closest to the connecting tube (2) is provided with at least one wing strip (5) on its outer periphery.
8. The roadbed settlement observation scale protection structure according to claim 7, characterized in that: At least one wing strip (5) is provided on the outer periphery of each pipe section.
9. The roadbed settlement observation scale protection structure according to claim 7, characterized in that: At least two wing strips (5) are arranged at the same height of the protection tube (3) or the tube section, and the wing strips (5) are distributed along the metallographic central angle of the protection tube (3) or the tube section.
10. The roadbed settlement observation scale protection structure according to claim 9, characterized in that: Three wing strips (5) of equal length are arranged at the same height of the protection tube (3) or the tube section, and the central angles corresponding to any two adjacent wing strips (5) are 120 degrees.