A pre-embedded inclinometer tube structure for continuous compaction construction within a wall

Abstract

This utility model discloses a pre-embedded inclinometer tube structure for continuous compaction construction of asphalt concrete core walls. The structure includes an asphalt concrete core wall layer, within which an inclinometer tube is pre-embedded. The inclinometer tube includes a tube body with threads at both the top and bottom. A sealing device is installed at the top of the tube body. Three positioning steel plates are circumferentially arranged along the middle of the tube body. Two symmetrical anti-slip wing rings are fitted onto the outer wall of the tube body. This invention avoids the adverse effects of permanent damage to the asphalt core wall caused by subsequent drilling within the wall, and effectively solves the problems associated with continuous compaction construction of asphalt concrete core walls, demonstrating promising application prospects.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydropower, specifically a pre-embedded inclinometer tube structure for through-compaction construction. Background Technology

[0002] Asphalt concrete is an artificial concrete made by mixing, laying and compacting asphalt, coarse and fine aggregates, mineral fillers and other materials in a certain proportion at high temperature. It has excellent impermeability, good flexibility and deformation adaptability, high durability and self-healing properties.

[0003] Asphalt concrete core dams are a type of earth-rock dam with an asphalt concrete core wall. Compared to conventional earth-rock dams with soil core walls, asphalt concrete core dams offer advantages such as superior seepage control, less susceptibility to weather conditions during construction, stronger erosion resistance, and no risk of hydraulic fracturing. They are widely used in areas lacking suitable seepage-proof soil materials or where soil construction is difficult in cold or frigid regions. The height of the asphalt concrete core wall in these dams typically exceeds 30 meters, with the highest existing wall exceeding 120 meters. The wall thickness ranges from 0.4 to 1.2 meters, and the wall is usually constructed using a layered paving and vibratory compaction process. Asphalt concrete core walls are characterized by their thinness and height. Under the pressure of reservoir water, the wall deforms downstream, but the bottom end of the wall restrains the deformation. Under the combined effect of reservoir water pressure and bottom restraint, the wall will exhibit an "arch-shaped" deformation in the vertical direction, with small deformation at both ends and large deformation in the middle. To intuitively understand the deformation distribution of the wall along the height direction, inclinometer tubes are generally installed inside the asphalt concrete core wall to obtain data on the horizontal displacement changes of the core wall at different elevations, thereby determining the overall safety of the asphalt core wall.

[0004] Inclinometers inside asphalt concrete core walls are generally installed using two methods: drilling and embedding after filling is completed, or pre-embedding during the filling process. Drilling after filling should be done using dry drilling with vertical holes. Due to the relatively thin asphalt core wall, the vertical accuracy and drilling process are extremely important. If the borehole is skewed, it will penetrate the asphalt core wall, causing irreparable and permanent damage, compromising the integrity of the seepage prevention system, and directly affecting the dam's seepage prevention effect. Furthermore, sealing the boreholes is extremely difficult, making it hard to ensure the sealing material is dense, void-free, and forms a unified seepage prevention system with the already poured asphalt concrete. Therefore, currently, drilling is generally not recommended for inclinometers in asphalt concrete core walls. Pre-embedding during the filling process involves embedding the inclinometers simultaneously with the asphalt concrete core wall in layers. This avoids the adverse effects of later drilling. However, embedding the inclinometers will separate the sections that could be compacted through the asphalt concrete core wall into relatively independent systems, interfering with the compaction progress and process. Utility Model Content

[0005] To minimize the interference of pre-embedded inclinometers on the construction of asphalt concrete core walls and to facilitate the compaction construction of roller-compacted asphalt concrete core wall dams, this application proposes a structure for pre-embedded inclinometers within the wall during compaction construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An embedded inclinometer tube structure for continuous compaction construction includes an asphalt concrete core wall layer, in which an inclinometer tube is embedded. The inclinometer tube includes a tube body, with threads at the top and bottom. A sealing device is provided at the top of the tube body. Three positioning steel plates are arranged circumferentially along the tube wall in the middle of the tube body. Two symmetrical anti-slip wing rings are fitted on the outer wall of the tube body.

[0008] Preferably, the bottom of the inclinometer tube body is provided with an external thread, and the top of the inclinometer tube body is provided with an internal thread.

[0009] Preferably, the asphalt concrete core wall pouring layer is multi-layered, and the external thread of the inclinometer tube at the bottom of the upper asphalt concrete core wall pouring layer is threadedly connected to the internal thread of the inclinometer tube at the top of the lower asphalt concrete core wall pouring layer.

[0010] Preferably, the sealing device has an external thread at its bottom, which is threaded to the internal thread of the inclinometer tube at the top of the top layer of asphalt concrete core wall.

[0011] Preferably, the anti-slip wing ring includes a first anti-slip wing ring and a second anti-slip wing ring, which are respectively disposed on the upper and lower sides of the positioning steel plate to prevent the inclinometer tube from sliding up and down in the asphalt concrete core wall pouring layer.

[0012] Preferably, the positioning steel plate is rectangular and has three layers, with the included angle between the three positioning steel plates being 120 degrees, to prevent the inclinometer tube from moving or rotating during the spreading and compaction process in the asphalt concrete core wall pouring layer.

[0013] Preferably, the upper part of the sealing device has a hexagonal structure and the lower part has an external thread structure, which facilitates the installation and disassembly of the temporary sealing device.

[0014] The positive effects of this utility model are as follows:

[0015] This utility model relates to a pre-embedded inclinometer tube structure within the asphalt concrete core wall pouring layer. By pre-embedding the inclinometer tube within the wall before pouring the asphalt concrete core wall, the inclinometer tube rises synchronously with the asphalt core wall during compaction, avoiding the adverse effects of subsequent drilling within the wall on the asphalt core wall, which would cause permanent damage. Furthermore, a sealing device is installed at the top of the inclinometer tube, facilitating continuous compaction of the asphalt concrete core wall and effectively reducing interference from the inclinometer tube during construction. Simultaneously, this utility model utilizes two symmetrical anti-slip wing rings and three circumferential positioning steel plates within the asphalt concrete core wall pouring layer, ensuring a tight bond between the inclinometer tube and the asphalt concrete core wall pouring layer, preventing upward or downward sliding or rotation, and achieving excellent positioning. Attached Figure Description

[0016] To further illustrate the technical solutions of this utility model in the embodiments, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings with creative effort.

[0017] Figure 1 This is a structural layout diagram of the present utility model.

[0018] Figure 2 This is a schematic diagram of the inclinometer tube assembly structure of this utility model.

[0019] Figure 3 This utility model Figure 2 Cross-sectional view of part A in the middle.

[0020] Figure 4 This utility model Figure 2 Cross-sectional view of section B.

[0021] Figure 5 This is a top view of the sealing device of this utility model.

[0022] Figure 6 This is a side view of the sealing device of this utility model.

[0023] Marked in the diagram: 1. Asphalt concrete core wall pouring layer; 2. Inclinometer tube body; 3. Sealing device; 4. External thread of inclinometer tube body; 5. Internal thread of inclinometer tube body; 6. Positioning steel plate; 7. First anti-slip wing ring; 8. Second anti-slip wing ring. Detailed Implementation

[0024] The following is combined with Figures 1-6 The present invention will now be further described.

[0025] The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0026] A pre-embedded inclinometer tube structure within a roller compaction (RCC) wall includes an asphalt concrete core wall layer 1, an inclinometer tube, and a tube sealing device 3. The inclinometer tube is pre-embedded within the asphalt concrete core wall layer 1. The inclinometer tube includes a tube body 2, with threads at both the top and bottom. A sealing device 3 is installed at the top of the tube body 2, with a hexagonal upper part and a threaded lower part. Three circumferential positioning steel plates 6 are arranged along the middle of the tube body 2, each rectangular, with an included angle of 120 degrees between them. Two symmetrical anti-slip wing rings are fitted onto the outer wall of the tube body 2. Each anti-slip wing ring includes a first anti-slip wing ring 7 and a second anti-slip wing ring 8, which are respectively positioned on the upper and lower sides of the positioning steel plates 6.

[0027] The bottom of the inclinometer tube body 2 is provided with an external thread 4, and the top of the inclinometer tube body 2 is provided with an internal thread 5. The asphalt concrete core wall pouring layer 1 is an independent horizontal layer formed by each paving and compaction during the construction of the core wall layer by layer, and the asphalt concrete core wall pouring layer 1 is multi-layered. The external thread 4 of the inclinometer tube body 2 at the bottom of the upper asphalt concrete core wall pouring layer 1 is threadedly connected to the internal thread 5 of the inclinometer tube body 2 at the top of the lower asphalt concrete core wall pouring layer 1. The bottom of the sealing device 3 is provided with an external thread, and the external thread at the lower part of the sealing device 3 is threadedly connected to the internal thread 5 of the inclinometer tube body 2 at the top of the top asphalt concrete core wall pouring layer 1.

[0028] The construction process is as follows: Before pouring the asphalt concrete core wall layer 1, a pre-embedded inclinometer tube 2 is pre-installed. Before the asphalt concrete core wall layer 1 is laid and compacted, the pre-embedded inclinometer tube 2 is installed according to the design positioning. The top of the pre-embedded inclinometer tube 2 is provided with an internal thread 5, and the bottom is provided with an external thread 4. The external thread 4 is threadedly connected to the internal thread 5 of the inclinometer tube 2 pre-embedded in the previous layer. Three rectangular positioning steel plates 6 are set circumferentially along the tube wall in the middle of the inclinometer tube 2. The included angle between the three rectangular positioning steel plates 6 is 120 degrees. Two symmetrical anti-slip wing rings are fitted on the outer wall of the inclinometer tube 2. The anti-slip wing rings include a first anti-slip wing ring 7 and a second anti-slip wing ring 8. The first anti-slip wing ring 7 and the second anti-slip wing ring 8 are respectively set on both sides of the positioning steel plate 6. After the pre-embedded inclinometer tube 2 is installed, a sealing device 3 is installed at its top opening. The sealing device 3 is provided with an external thread that matches the internal thread 5 of the inclinometer tube body, and connects to the internal thread 5 of the inclinometer tube body at the top of the inclinometer tube. The upper part of the sealing device 3 has a hexagonal structure, and the lower part has a threaded structure. Finally, the asphalt concrete fill material is spread and compacted. After the asphalt concrete core wall is filled, the above work is repeated to realize the pre-embedding of the inclinometer tube along with the layered filling of the asphalt concrete core wall.

[0029] The working principle of this utility model is as follows: During the asphalt concrete core wall filling and compaction process, the pre-embedded inclinometer tubes in the previous layer of asphalt concrete fill material are dug out and the temporary sealing structure is dismantled. The next layer of inclinometer tubes is installed, and a temporary sealing device 3 is installed on the top of the inclinometer tubes. Then, the asphalt concrete fill material is spread and compacted. After the current layer of asphalt concrete core wall is filled, the above work is repeated to realize the pre-embedding of inclinometer tubes along with the layered filling of the asphalt concrete core wall. The inclinometer tubes pre-embedded in the asphalt concrete core wall are installed before the asphalt concrete core wall is poured. The pre-embedded inclinometer tubes are rolled up synchronously with the asphalt core wall, avoiding the adverse effects of permanent damage to the asphalt core wall caused by drilling in the wall later. A sealing device 3 is set at the top of the inclinometer tube body 2 to facilitate the continuous rolling construction of the asphalt concrete core wall, effectively reducing the interference of the pre-embedded inclinometer tubes on the construction of the asphalt concrete core wall. At the same time, the inclinometer tubes pre-embedded in the asphalt concrete core wall are tightly connected to the asphalt concrete core wall through two symmetrical anti-slip wing rings and three circumferential positioning steel plates 6, preventing upward or downward sliding or rotation, and the embedding and positioning effect is good.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structure of pre-burying an inclinometer tube in a wall by tunneling and rolling construction, characterized in that, The asphalt concrete core wall pouring layer (1) is included, and a clinometer is pre-embedded in the asphalt concrete core wall pouring layer (1). The clinometer includes a clinometer tube body (2). The top and bottom of the clinometer tube body (2) are threaded. A sealing device (3) is provided at the top of the clinometer tube body (2). Three positioning steel plates (6) are arranged circumferentially along the tube wall in the middle of the clinometer tube body (2). Two anti-slip wing rings are fitted on the outer wall of the clinometer tube body (2).

2. The structure of the pre-buried inclinometer casing in the wall for tunneling and rolling construction according to claim 1, characterized in that, The bottom of the inclinometer tube body (2) is provided with an external thread (4), and the top of the inclinometer tube body (2) is provided with an internal thread (5).

3. The pre-buried inclinometer casing structure in the wall of the tunneling and rolling construction according to claim 2, characterized in that, The asphalt concrete core wall pouring layer (1) is multi-layered. The external thread (4) of the inclinometer tube body (2) in the upper asphalt concrete core wall pouring layer (1) is threadedly connected to the internal thread (5) of the inclinometer tube body (2) in the lower asphalt concrete core wall pouring layer (1).

4. The structure of the pre-buried inclinometer casing in the wall for the construction of the wall by the method of the tunneling according to claim 3, characterized in that, The sealing device (3) has an external thread at its bottom, and the external thread at the bottom of the sealing device (3) is threadedly connected to the internal thread (5) of the inclinometer tube body (2) at the top of the top layer of asphalt concrete core wall (1).

5. The wall-embedded inclinometer tube structure for through-compaction construction according to claim 1, characterized in that, The anti-slip wing ring includes a first anti-slip wing ring (7) and a second anti-slip wing ring (8), which are respectively disposed on the upper and lower sides of the positioning steel plate (6).

6. The structure of the pre-buried inclinometer casing in the wall for tunneling and rolling construction according to claim 1, characterized in that, The positioning steel plate (6) is rectangular and has three sections, with the included angle between the three positioning steel plates (6) being 120 degrees.

7. The structure of the pre-buried inclinometer casing in the wall for tunneling and rolling construction according to claim 1, characterized in that, The sealing device (3) has a hexagonal structure at the top and an external thread structure at the bottom.

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