Protective device for settlement plate and method of using the same in roadbed filling

Abstract

The present invention provides a protective device for a settlement plate, comprising: a base plate, an operating hole, at least two support members, and a protective cover capable of sealing the operating hole, wherein the compressive strength of the base plate and the protective cover is designed to be greater than the compressive strength of the roadbed. This protective device can prevent the measuring rod of the settlement plate from directly contacting devices such as a road roller, thereby reducing the risk of damage during the laying of the roadbed, and is easy to install and reusable. The present invention also provides a method for using the above-mentioned protective device for a settlement plate during the process of filling the roadbed, which includes cutting the measuring rod or cutting it so that it does not protrude beyond the corresponding roadbed layer and arranging a protective device above the measuring rod, thereby ensuring the compaction quality of the roadbed, especially the roadbed around the measuring rod, and providing a complete working surface for the filling of the next layer of roadbed, thereby improving construction efficiency.

Description

Technical Field

[0001] The invention relates to a protective device for a roadbed detection system, in particular to a protective device for a settlement plate. Background Art

[0002] The roadbed is an important part of the current high-speed railway structure. Its stability and safety directly determine the operation safety and speed of the high-speed railway. Therefore, it is very important to observe the expansion or settlement of the roadbed in time and take corresponding treatment measures accordingly. At present, the settlement plate is mainly used to observe the deformation of the roadbed. The settlement plate is mainly composed of a settlement plate base, a measuring rod and a casing. The settlement plate base is arranged at the interface between the foundation and the roadbed, the measuring rod is vertically fixed on the settlement plate base, and the casing is sleeved on the measuring rod. The existing roadbed filling method is generally layered filling, and each layer of filling includes two steps: laying and compacting. As the fill increases, the measuring rod and the casing are also connected accordingly. Finally, the measuring rod should be higher than the top surface of the roadbed for easy observation. However, in the actual roadbed filling process, the measuring rod protruding from the laid roadbed often becomes an obstacle in the roadbed compaction process, because during the compaction process, the roller used must avoid the measuring rod for compaction, which will lead to poor compaction quality of the roadbed around the measuring rod, and manual assistance is still required, affecting the work efficiency and construction quality. In addition, in the process of using the roller to perform the compaction operation, it is very easy to damage the measuring rod, and the difficulty of repairing the measuring rod also makes people question the accuracy of the observation data obtained from the settlement plate. Summary of the invention

[0003] In order to overcome the above problems, the present invention provides a protective device for a settlement plate, which can be arranged above the measuring rod as needed to protect the measuring rod during the roadbed compaction process. The present invention also provides a method for using the above-mentioned protective device for a settlement plate when filling the roadbed, which not only avoids damage to the settlement plate caused by the compaction operation, but also ensures the compaction quality of the roadbed.

[0004] The present invention provides a protective device for a settlement plate, wherein the settlement plate comprises a settlement plate base and a measuring rod vertically arranged on the settlement plate base and capable of being connected to a height, the protective device comprises a substrate having a first side surface and a second side surface opposite to the first side surface, an operating hole designed to be opened through the substrate and allowing the measuring rod to pass through the substrate from the first side surface or the second side surface, a support member designed to be fixedly connected to the substrate and extending toward the first side surface or extending from the first side surface away from the substrate, and a protective cover designed to be able to seal the operating hole from the second side surface, wherein the compressive strength of the substrate and the protective cover is designed to be greater than the compressive strength of the roadbed.

[0005] Preferably, the protection cover is constructed to include a bottom plate and a sealing flange extending perpendicularly to the bottom plate from an entire circumference of the bottom plate, and the sealing flange is designed to surround the operation hole.

[0006] Preferably, the bottom plate is pivotably coupled to the second side of the base plate by means of a bolt-nut assembly.

[0007] Preferably, the protective device is designed to be rust-proof.

[0008] Preferably, the compressive strength of the substrate and the protective cover is designed to be greater than 55 MPa.

[0009] The present invention also provides a method for using the above-mentioned protective device for the settlement plate in the process of filling the roadbed, comprising the following steps: step A, arranging the settlement plate base on the interface between the roadbed and the foundation, and connecting the first measuring rod to the settlement plate base; step B, laying the first layer of roadbed, cutting off the first measuring rod so that it does not protrude beyond the laid first layer of roadbed; step C, inserting the protective device into the laid first layer of roadbed with the help of the support, arranging the operating hole correspondingly above the first measuring rod, and closing the protective cover; step D, compacting the first layer of roadbed; step E, cutting off the second measuring rod, and punching Open the protective cover to expose the operating hole, and connect the second measuring rod to the first measuring rod through the operating hole; step F, remove the protective device, lay the second layer of roadbed, and cut off the second measuring rod so that it does not protrude beyond the laid second layer of roadbed; step G, repeat the above steps C to F until the Nth layer of roadbed is compacted, where N is an integer greater than 1; step H, cut off the (N+1)th measuring rod, open the protective cover to expose the operating hole, and connect the (N+1)th measuring rod to the Nth measuring rod, so that the (N+1)th measuring rod protrudes beyond the Nth layer of roadbed after connection.

[0010] Preferably, after the Nth layer of roadbed is laid, the truncated Nth measuring rod is 5-10 cm lower than the laid Nth layer of roadbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 and Figure 2 The figures are a front view and a top view of the protective device for a settling plate according to the present invention.

[0012] Reference numerals list

[0013] 1. Base plate; 2. First side; 3. Second side; 4. Operation hole; 5. Support member; 6. Protective cover; 7. Bottom plate. DETAILED DESCRIPTION

[0014] Now, with reference to the accompanying drawings, the schematic scheme of the device disclosed in the present invention is described in detail. Although the accompanying drawings are provided to present some embodiments of the present invention, the accompanying drawings are not necessarily drawn according to the size of the specific embodiments, and some features known to those skilled in the art may be enlarged or removed to better illustrate and explain the disclosure of the present invention. Some components in the accompanying drawings may be adjusted in position according to actual needs without affecting the technical effect.

[0015] Certain directional terms used in the following description of the drawings, such as "upper" and "lower", will be understood to have their normal meanings and refer to those directions involved when the drawings are normally viewed. "First" and "second" are used only for distinction and do not indicate any primary or secondary meaning.

[0016] Figure 1 and Figure 2 The front view and top view of the protective device for the settlement plate according to the present invention are shown. The settlement plate mainly includes a settlement plate base arranged at the interface between the roadbed and the foundation, a measuring rod vertically fixedly connected to the settlement plate base, and a sleeve sleeved outside the measuring rod and generally made of PVC material.

[0017] Specifically, the protection device is constructed to mainly include a base plate 1, a support member 5, an operation hole 4 provided through the base plate 1, and a protection cover 6 used in conjunction with the operation hole 4. The base plate 1 is generally made of concrete, reinforced concrete or steel material, and is designed to include a first side surface 2 facing the measuring rod and a second side surface 3 arranged opposite to the first side surface 2 and in direct contact with the road roller. The base plate 1 is inserted into the roadbed with the aid of the support member 5. The support member 5 can be designed, for example, to be fixedly connected (for example, welded, screwed) to the periphery of the base plate 1 and extend toward the first side surface 2, or to be fixedly connected to the first side surface 2 of the base plate 1 and extend away from the base plate 1. In order to ensure that the base plate 1 is subjected to stable force, at least two support members 5, for example, symmetrically arranged relative to the vertical center line of the base plate 1, can be used.

[0018] In order to conveniently observe the measuring rod and facilitate the connection of the measuring rod while protecting the measuring rod, an operation hole 4 is formed through the substrate 1. The operation hole 4 can be set at the center of the substrate 1 and is designed to allow the measuring rod to pass through the substrate 1 from the first side surface or the second side surface. The operation hole 4 can be designed to be circular, and its diameter is slightly larger than the diameter of the measuring rod.

[0019] In order to prevent roadbed materials or dust from entering the measuring rod through the operating hole 4 or rainwater from flowing into the measuring rod through the operating hole 4 during the compaction operation, a corresponding protective cover 6 is also required for the operating hole 4. The protective cover 6 should be able to seal and shield the operating hole 4 from the second side surface to prevent unwanted objects from entering the measuring rod. The protective cover 6 can be separated from the substrate 1 or connected to the substrate 1. For example, the protective cover 6 can be constructed to include a bottom plate 7 that conforms to the operating hole 4 and a sealing flange (not shown) extending perpendicularly to the bottom plate from the periphery of the bottom plate 7, and the sealing flange should be able to surround the entire operating hole 4. The bottom plate 7 can be pivotally connected to the second side of the substrate 1, for example, by means of a bolt-nut assembly or other connecting parts to prevent loss. The sealing flange can be obtained, for example, by bending the periphery of the bottom plate 7 toward the second side 3 of the substrate 1, or an elastic member such as rubber can be provided on the periphery of the bottom plate 7.

[0020] The above-mentioned protection device can be reused, and in order to extend its service life, it is preferably subjected to rust-proof treatment on its outer surface. For example, the outer surface of the protection device can be painted with anti-rust paint or the protection device can be prepared by materials such as stainless steel.

[0021] In order to protect the measuring rod located thereunder, the base plate 1 and the protective cover 6 should not be deformed too much when subjected to the force applied by the roller to prevent interference with the measuring rod. The compressive strength of the base plate 1 and the protective cover 6 should be at least greater than the compressive strength of the roadbed, and preferably the compressive strength of both should be greater than 55 MPa.

[0022] The protective device is arranged between the measuring rod and the roller when the roller passes over it, ensuring that the measuring rod does not come into direct contact with the roller and is therefore not damaged by the roller. At the same time, the compaction quality of the roadbed around the measuring rod is ensured, providing a complete working surface for the subsequent roadbed. In addition, the protective device also reduces the amount of unwanted objects that may enter the measuring rod when the measuring rod is raised. At the same time, people can also observe the condition of the measuring rod at any time through the operating hole.

[0023] The following is a brief description of the use of the protective device when constructing the roadbed.

[0024] In the prior art, the filling of the roadbed is generally carried out in layers, and each layer of filling mainly includes two steps: laying and compacting. The roadbed filling process in the prior art is briefly described as follows. Assuming that three layers of roadbed need to be filled, before filling the first layer of roadbed, the settlement plate should first be arranged at the interface between the roadbed and the foundation, and then the first measuring rod should be fixedly connected thereto, and a casing should be correspondingly set on the outside of the measuring rod; the next step is to lay the first layer of roadbed, in which the first measuring rod should protrude beyond the laid first layer of roadbed; next, the first layer of roadbed is compacted; next, the second measuring rod is cut and connected to the first measuring rod ( This step is to connect the first measuring rod); next, lay the second layer of roadbed, in which the second measuring rod still needs to protrude beyond the second layer of roadbed, and then compact the second layer of roadbed; repeat the steps of filling the second layer of roadbed when filling the third layer of roadbed, that is, first cut the third measuring rod and then connect it to the second measuring rod, and accordingly set a sleeve on the outside of the third measuring rod; next, lay the third layer of roadbed, similarly, the third measuring rod should protrude beyond the third layer of roadbed; finally, compact the third layer of roadbed. The deformation of the roadbed can be obtained by finally observing the reading of the third measuring rod.

[0025] When the above-mentioned protective device is used, still taking the above three-layer roadbed filling as an example, after the first layer of roadbed is laid, the first measuring rod should be cut off so that it does not protrude beyond the first layer of roadbed, and is preferably 5-10 cm lower than the first layer of roadbed; next, the protective device is inserted into the first layer of roadbed with the help of the support 5, so that the operating hole 4 is aligned with the first measuring rod, and the protective cover 6 is closed so that its sealing flange seals the operating hole 4; next, the first layer of roadbed is compacted; thereby, the protective device bears the load that may have been applied to the first measuring rod, and at the same time, the roadbed around the first measuring rod can also be compacted by a roller or other device.

[0026] Next, according to the thickness of the second layer of roadbed to be laid, the second measuring rod is cut off, the protective cover 6 is rotated again to expose the operating hole 4, and the second measuring rod is connected to the first measuring rod through the operating hole 4 to connect the first measuring rod; next, the protective device is removed, the second layer of roadbed is laid, and the second measuring rod is cut off so that it does not protrude beyond the laid second layer of roadbed. It is also preferred that the second measuring rod is 5-10 cm lower than the laid second layer of roadbed; next, the protective device is inserted into the laid second layer of roadbed again, the operating hole 4 is aligned with the second measuring rod, and the protective cover 6 is rotated so that its sealing flange seals the operating hole 4. Make hole 4; next, compact the second layer of roadbed; next, cut off the third measuring rod according to the third layer of roadbed to be laid, turn the protective cover 6 again to expose the operation hole 4, connect the third measuring rod through the operation hole 4 to the second measuring rod, so as to connect the second measuring rod; next, remove the protective device, lay the third layer of roadbed, cut off the third measuring rod so that it does not protrude beyond the laid third layer of roadbed; next, insert the protective device into the third layer of roadbed again, align the operation hole 4 with the third measuring rod, turn the protective cover 6 so that its sealing flange seals the operation hole 4; next, compact the third layer of roadbed. It should be noted that at this time, the measuring rod may still be lower than the compacted third layer of roadbed, so that the data of the measuring rod cannot be observed, so continue to cut off the fourth measuring rod, open the protective cover 6 to expose the operation hole 4, connect the fourth measuring rod to the third measuring rod, and after connection, the fourth measuring rod protrudes beyond the third layer of roadbed, so that the fourth measuring rod can be directly observed. After the fourth measuring rod is connected, the protection device can be removed or left in the third roadbed.

[0027] It can be seen that the laying, compaction and height connection method from the second roadbed and the second measuring rod to the Nth roadbed and the Nth measuring rod (where N is an integer greater than 1) is to repeat the above steps. When it is necessary to lay N layers of roadbed, the (N+1)th measuring rod should be intercepted at last, and the (N+1)th measuring rod should be connected to the Nth measuring rod. After the connection, the (N+1)th measuring rod protrudes beyond the Nth roadbed. The final roadbed deformation result is obtained by observing the data change of the (N+1)th measuring rod.

Claims

1. A method for using a protective device for a settlement plate in a process of filling a roadbed, wherein the protective device for a settlement plate comprises a settlement plate base and a measuring rod vertically arranged on the settlement plate base and capable of being connected to a height, wherein the protective device comprises: A substrate (1) comprising a first side surface (2) and a second side surface (3) opposite to the first side surface (2); an operating hole (4) which is designed to be opened through the substrate (1) and allows the measuring rod to pass through the substrate (1) from the first side surface or the second side surface; a support member (5) configured to be fixedly connected to the base plate (1) and to extend laterally toward the first side surface or to extend away from the base plate (1) from the first side surface; a protective cover (6) designed to seal the operation hole (4) from the second side surface; The compressive strength of the base plate (1) and the protective cover (6) is designed to be greater than the compressive strength of the roadbed; The protective cover is constructed to include a bottom plate (7), the bottom plate is pivotally connected to the second side of the base plate by means of a bolt-nut assembly, and the support member defines an operating space located below the base plate and corresponding to the operating hole in its extending direction; The following steps are involved: Step A, arranging the settlement plate base on the interface between the roadbed and the foundation, and connecting the first measuring rod to the settlement plate base; Step B, laying the first layer of roadbed, cutting off the first measuring rod so that it does not protrude beyond the laid first layer of roadbed; Step C, inserting the protection device into the first layer of the laid roadbed with the aid of the support member (5), arranging the operation hole (4) correspondingly above the first measuring rod, and closing the protection cover (6); Step D, compacting the first layer of roadbed; Step E, cutting off the second measuring rod, opening the protective cover (6) to expose the operating hole (4), and the second measuring rod passing through the operating hole (4) to be connected to the first measuring rod; Step F, dismantling the protective device, laying a second layer of roadbed, and cutting off the second measuring rod so that it does not protrude beyond the laid second layer of roadbed; Step G, repeating the above steps C to F until the Nth layer of roadbed is compacted, where N is an integer greater than 1; Step H, cutting off the (N+1)th measuring rod, opening the protective cover (6) to expose the operating hole (4), connecting the (N+1)th measuring rod to the Nth measuring rod, and after connection, the (N+1)th measuring rod protrudes beyond the Nth layer of roadbed.

2. The method of use according to claim 1, characterized in that After the Nth layer of roadbed is laid, the Nth measuring rod after truncation is 5-10 cm lower than the Nth layer of roadbed.

3. The method of use according to claim 1, characterized in that: The protection cover is configured to further include a sealing flange extending perpendicularly to the bottom plate from the entire periphery of the bottom plate, and the sealing flange is designed to surround the operation hole.

4. The method of use according to claim 1, characterized in that: The protective device is designed to be rust-proof.

5. The method of use according to claim 1, characterized in that: The compressive strength of the substrate and the protective cover is designed to be greater than 55 MPa.

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