An elevation control device and its usage method in the construction of subgrade in frozen soil section

Abstract

A elevation control device and its usage method in the construction of subgrade in frozen soil section, belonging to the technical field of road construction, including an elevation column with height markings. A soil-type load sleeve is sleeved on the upper section of the elevation column. A locking piece is arranged between the soil-type load sleeve and the elevation column. A transfer ring A, a transfer ring B and a hollow ring are rotatably installed in the soil-type load sleeve. And wire connection blocks A, B and C are respectively fixedly installed on the outer surfaces of the transfer ring A, the transfer ring B and the hollow ring. L-shaped wire passing holes are respectively formed through one ends of the wire connection blocks A, B and C away from the soil-type load sleeve. The present invention introduces a means for detecting the construction quality at the middle position of the road. Through the precise monitoring of multiple dimensions of the road cross-section, a more perfect construction quality control system is formed, effectively improving the overall construction quality of the road and ensuring that the project meets the requirements of high-standard construction.

Description

Technical Field

[0001] The present invention belongs to the technical field of road construction, and particularly relates to an elevation control device and a method for using the same in the construction of subgrade in frozen soil sections. Background Art

[0002] In the construction of frozen soil sections of railways in the alpine regions of Sichuan-Tibet, after the foundation pit is excavated, a layered backfilling and compaction laying process is adopted. During this process, in order to accurately control the thickness of each layer of backfill, control piles need to be installed on both sides of the road as a reference benchmark for project quality.

[0003] After patent retrieval, among related fields, the control piles involved in authorized patents such as those with publication numbers CN218712041U, CN216947765U, and CN220685714U each have their own structural characteristics, but all have certain limitations. The structure of the wire rope connection end is relatively fixed. When implanting the elevation column into the soil, it is difficult to flexibly adjust the direction independently. Construction workers need to ensure that the direction of the wire rope connection end meets the requirements with extremely high operation accuracy. This process is difficult, time-consuming, and laborious, and any carelessness will reduce the accuracy of subsequent elevation control.

[0004] At the same time, during the road laying period, it is not convenient to laterally connect the wire ropes for detection. When it is necessary to refer to the elevation at the middle position of the road, due to the technical defects of the existing elevation columns, construction workers can only make a long-distance judgment by the naked eye, which inevitably introduces a large error and is difficult to meet the strict requirements of modern projects for high precision. In the long run, it will have a negative impact on the flatness, linearity, and overall structural quality of the road, thereby increasing the probability of project rework, resulting in project delays and cost increases. In view of this, an elevation control device and a method for using the same in the construction of subgrade in frozen soil sections are provided to solve the above technical problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an elevation control device and a method for using the same in the construction of subgrade in frozen soil sections to solve the problems mentioned in the above background art. The specific technical solutions are as follows:

[0006] An elevation control device includes an elevation column with height markings. The upper section of the elevation column is sleeved with a soil-type carrier sleeve. A locking member is arranged between the soil-type carrier sleeve and the elevation column. A transfer ring A, a transfer ring B, and a hollow ring are rotatably installed in the soil-type carrier sleeve. The transfer ring A, the transfer ring B, and the hollow ring are arranged in sequence from top to bottom. Wire connection blocks A, B, and C are respectively and fixedly installed on the outer surfaces of the transfer ring A, the transfer ring B, and the hollow ring. The wire connection blocks A, B, and C are respectively used to connect the wire ropes between two elevation columns.

[0007] In the above technical solution, L-shaped wire threading holes are respectively formed through one ends of the steel wire connection block A, the steel wire connection block B and the steel wire connection block C far away from the soil-shaped carrier sleeve. The three L-shaped wire threading holes are located on the same circumferential level. And on one sides of the steel wire connection block A, the steel wire connection block B and the steel wire connection block C far away from the soil-shaped carrier sleeve, fastening bolts are screwed and installed. The fastening bolts penetrate through the corresponding L-shaped wire threading holes.

[0008] In the above technical solution, both the steel wire connection block A and the steel wire connection block B are Z-shaped, and the length of the steel wire connection block C is less than one half of the lengths of the steel wire connection block A and the steel wire connection block B.

[0009] In the above technical solution, the soil-shaped carrier sleeve includes a sleeve. A reading window is formed through the outer surface of the sleeve. And a supporting ring is fixedly installed on the lower surface of the sleeve. The upper surface of the supporting ring is attached to the lower surface of the hollow ring. A limiting ring is fixedly installed on the outer surface of the upper section of the sleeve. The lower surface of the limiting ring is attached to the upper surface of the adapter ring A.

[0010] In the above technical solution, a conical finger is fixedly installed on one side of the steel wire connection block C close to the sleeve. The conical finger and the L-shaped wire threading hole are located at the same circumferential level position.

[0011] In the above technical solution, the locking member includes a locking bolt. The locking bolt is screwed and installed through the outer surface of the sleeve. The locking bolt is located above the limiting ring. And an operating handle is fixedly installed at one end of the locking bolt far away from the sleeve.

[0012] In the above technical solution, two rib grooves are formed on the inner barrel wall of the sleeve. Two positioning ribs are fixedly installed on the outer surface of the upper end of the elevation column. A sliding connection is formed between the rib groove and the corresponding positioning rib.

[0013] In the above technical solution, a fixing plate is fixedly installed on the outer surface of the lower end of the elevation column. The fixing plate and the elevation column are vertically arranged.

[0014] The present invention also provides a using method of the elevation control device in the construction of the subgrade in the frozen soil section. The method includes the steps:

[0015] a. In the construction of the subgrade in the frozen soil section, along both sides of the predetermined laying road, at an interval distance of not less than 50 cm, drive a plurality of the elevation columns into the ground. After ensuring driving in, the lower surface of the fixing plate is closely attached to the ground, and the starting end of the height mark of the elevation column is flush with the ground, so as to provide a stable and accurate reference point for subsequent elevation control.

[0016] b. After the elevation column is installed, the locking bolt is rotated by turning the operating handle to release the fixing constraint on the soil type carrier sleeve. According to the elevation value required for construction, the soil type carrier sleeve is slid up and down on the elevation column. In this process, with the help of the synergy of the reading window and the conical finger, the height position of the L-shaped threading hole can be accurately determined to ensure the accuracy of the elevation adjustment.

[0017] c. After completing the elevation adjustment of the soil type carrier, for each elevation column, flexibly rotate the wire connection block A and the wire connection block B so that their orientation meets the construction requirements. Pass the wire rope through the L-shaped threading holes of the wire connection block A and the wire connection block B in turn, and evenly apply force to tighten and straighten the wire rope. Subsequently, use the tightening bolt to firmly fix the wire rope in the L-shaped threading hole, thus completing the wire pulling operation between the two adjacent elevation columns, providing a standard reference line for the road paving and compaction process.

[0018] d. During the construction of layered road paving, the soil carrier sleeve can be released in time according to the elevation requirements of each layer, and the elevation can be adjusted again to meet the construction requirements of different layered paving. After each layer of paving is completed, a steel wire rope is connected between two steel wire connecting blocks C that are diagonally opposite or front and back, and the steel wire rope is used as a reference to detect the elevation of the middle position of the paved road. When the road surface fits the steel wire rope, it indicates that the road surface paving height meets the standard; if the road surface is lower than the steel wire rope, it means that the paving height is insufficient, and construction materials need to be supplemented and compacted in time; if the steel wire rope is abnormally arched, that is, the middle of the road surface is higher than the two sides, the road surface should be compacted immediately with a roller or tamping equipment to ensure that the road surface is level with the roads on both sides and meet the quality standards of road construction.

[0019] Compared with the prior art, the elevation control device of the present invention and the method of using the same in the construction of frozen soil roadbed have the following beneficial effects:

[0020] Before actually driving the elevation control piles described in the present invention, there is no need to consider the orientation of the wire connection blocks, and the operation of driving the elevation piles into the soil can be directly carried out, reducing the operation difficulty during the installation of the elevation piles. After driving, the directions of the wire connection block A and the wire connection block B can be adjusted 360° according to the direction to which the steel wire rope is to be connected, realizing the wire-pulling operation between two elevation piles, providing a standard reference line for the road paving and compaction processes. At the same time, for the usage method of the elevation control device described in the present invention in the construction of subgrade in frozen soil sections, during the process of layered road paving, two wire connection blocks C61 that are diagonally opposite or front and back relative can be used to connect a steel wire rope between them. Taking this steel wire rope as a reference, the elevation of the middle position of the paved road can be monitored to ensure that the road surface is level with the roads on both sides. Compared with the traditional construction monitoring mode that only focuses on the quality control of both sides of the road, this solution introduces a means for detecting the construction quality of the middle position of the road. Through precise monitoring of multiple dimensions of the road cross-section, a more perfect construction quality control system is formed, effectively improving the overall construction quality of the road and ensuring that the project meets the requirements of high-standard construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the front view structural schematic diagram of the present invention.

[0022] Figure 2 is the structural schematic diagram of the soil-shaped load sleeve of the present invention.

[0023] Figure 3 is the exploded structural schematic diagram of the soil-shaped load sleeve of the present invention.

[0024] Figure 4 is the sectional structural schematic diagram of the hollow ring of the present invention.

[0025] Figure 5 is the structural schematic diagram of the present invention under normal use state.

[0026] Figure 6 is the schematic diagram of the use state of the present invention when horizontally detecting the height of a local road surface.

[0027] Figure 7 is the schematic diagram of the use state of the present invention when obliquely detecting the height of a local road surface.

[0028] Figures 1-7 In the figure, where: 1, elevation pile; 11, fixing plate; 12, positioning rib; 2, soil-shaped load sleeve; 21, sleeve; 211, reading window; 212, rib groove; 22, supporting ring; 23, limiting ring; 3, locking part; 31, locking bolt; 32, operating handle; 4, adapter ring A; 41, wire connection block A; 5, adapter ring B; 51, wire connection block B; 6, hollow ring; 61, wire connection block C; 62, tapered finger; 7, L-shaped wire passing hole; 71, tightening bolt. Detailed implementation manners

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] The front, back, left, right, top and bottom in this embodiment are described with Figure 5 as the reference plane. Please refer to Figures 1-7 , the present invention provides a technical solution:

[0031] A elevation control device includes an elevation column 1 with height marks. A soil-type carrier sleeve 2 is sleeved on the upper section of the elevation column 1. A locking member 3 is arranged between the soil-type carrier sleeve 2 and the elevation column 1. A transfer ring A 4, a transfer ring B 5 and a hollow ring 6 are rotatably installed in the soil-type carrier sleeve 2. The transfer ring A 4, the transfer ring B 5 and the hollow ring 6 are arranged in sequence from top to bottom. And wire connection blocks A 41, wire connection blocks B 51 and wire connection blocks C 61 are respectively fixedly installed on the outer surfaces of the transfer ring A 4, the transfer ring B 5 and the hollow ring 6. The wire connection blocks A 41, the wire connection blocks B 51 and the wire connection blocks C 61 are respectively used for connecting the steel wires between two elevation columns 1. L-shaped wire passing holes 7 are respectively formed through one end of the wire connection blocks A 41, the wire connection blocks B 51 and the wire connection blocks C 61 far away from the soil-type carrier sleeve 2. The three L-shaped wire passing holes 7 are all on the same circumferential level. And fastening bolts 71 are respectively screwed and installed on one side of the wire connection blocks A 41, the wire connection blocks B 51 and the wire connection blocks C 61 far away from the soil-type carrier sleeve 2. The fastening bolts 71 penetrate through the corresponding L-shaped wire passing holes 7;

[0032] Combined with Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, during actual use, multiple elevation columns 1 are used together. When in use, on both sides of the road to be built, the elevation columns 1 are nailed into the ground at equal intervals respectively. Then, the fixing of the soil-type carrier sleeve 2 by the locking member 3 is released, and according to the height to be elevated, the position of the soil-type carrier sleeve 2 is adjusted by sliding it up and down, so that the wire connecting block A41, the wire connecting block B51, and the wire connecting block C61 are located at the circumferential horizontal position to be elevated. Then, the soil-type carrier sleeve 2 is fixed by the locking member 3 (this operation needs to be carried out for each elevation column 1 to ensure that the elevation positions of multiple elevation columns 1 are the same). Then, the positions of the wire connecting block A41 and the wire connecting block B51 are adjusted by rotation so that they face the direction of the adjacent elevation column 1 on one side. Then, a steel wire rope is connected between the wire connecting block B51 and the wire connecting block A41 on another adjacent elevation column 1 through the L-shaped wire passing hole 7. Then, the steel wire rope is straightened and tightened, and the two ends of the steel wire rope are respectively fixed in the corresponding L-shaped wire passing holes 7 by the tightening bolts 71. According to the same installation method, the steel wire ropes are installed between adjacent two elevation columns 1 in turn, and multiple steel wire ropes are arranged on both sides of the road to form a reference line for the paving and compaction processes.

[0033] During the process of layered paving construction of the road, after each layer of the road is paved well, as Figure 6 and Figure 7 shown, another steel wire rope for detection can be connected between the wire connecting blocks C61 on the front and rear elevation columns 1 or the wire connecting blocks C61 on the two elevation columns 1 at the diagonal. The steel wire rope can be erected across the road, and the state between the road surface and the steel wire rope is used to judge whether the middle and both sides of the paved road surface are flush, so as to facilitate timely filling or flattening and avoid affecting subsequent construction.

[0034] Compared with the prior art, the present invention reduces the operation difficulty when nailing the elevation column 1. After being nailed in, the directions of the wire connecting block A41 and the wire connecting block B51 can be adjusted 360° according to the direction to which the steel wire rope is to be connected, realizing the wire-pulling operation between two elevation columns 1, and the operation is simpler and more convenient. In addition, compared with the traditional construction monitoring mode that only focuses on the quality control of both sides of the road, this solution introduces a comprehensive construction quality monitoring means for the middle position of the road. Through the precise monitoring of multiple dimensions of the road cross-section, a more perfect construction quality control system is formed, effectively improving the overall construction quality of the road and ensuring that the project meets the high-standard construction requirements.

[0035] Combined with Figure 1 and Figure 3As shown, both the wire connection block A41 and the wire connection block B51 are Z-shaped. The length of the wire connection block C61 is less than half of the lengths of the wire connection block A41 and the wire connection block B51. When the wire connection block C61 of this length rotates to the adjustment position, it can smoothly pass under the wire connection block A41 and the wire connection block B51, ensuring normal adjustment function.

[0036] Combined with Figure 2 and Figure 3 As shown, the soil-type carrier sleeve 2 includes a sleeve 21. A reading window 211 is penetrated and opened on the outer surface of the sleeve 21. The position of the reading window 211 corresponds to the height marking position on the elevation column 1. And a supporting ring 22 is fixedly installed on the lower surface of the sleeve 21. The upper surface of the supporting ring 22 is attached to the lower surface of the hollow ring 6. A limiting ring 23 is fixedly installed on the outer surface of the upper section of the sleeve 21. The lower surface of the limiting ring 23 is attached to the upper surface of the adapter ring A4.

[0037] During the production process of the soil-type carrier sleeve 2, first weld the supporting ring 22 to the bottom of the sleeve 21. Then, sequentially sleeved the hollow ring 6 with the wire connection block C61, the adapter ring B5 with the wire connection block B51, and the adapter ring A4 with the wire connection block A41 on the outer surface of the sleeve 21. After that, sleeve the limiting ring 23 on the outer surface of the sleeve 21. After the sleeve 21 slightly contacts the adapter ring A4, weld and fix the limiting ring 23 and the sleeve 21.

[0038] To facilitate accurate reading of the elevation height, combined with Figure 1 , Figure 2 and Figure 4 As shown, a tapered finger 62 is fixedly installed on the side of the wire connection block C61 close to the sleeve 21. The tapered finger 62 and the L-shaped wire passing hole 7 are in the same circumferential horizontal position.

[0039] When the elevation position needs to be adjusted, the operator changes the overall elevation by adjusting the sleeve 21 up and down. During this process, rotate the hollow ring 6, and the tapered finger 62 can be accurately adjusted to the position of the reading window 211 of the sleeve 21 flexibly. Due to the circumferential horizontal position relationship between the tapered finger 62 and the L-shaped wire passing hole 7, the operator only needs to observe the position indicated by the tapered finger 62 through the reading window 211 to quickly and accurately determine the position of the L-shaped wire passing hole 7. This design not only simplifies the reading steps during the elevation adjustment process but also greatly improves the accuracy and reliability of elevation measurement, providing an efficient and accurate operation method for elevation control work in fields such as road construction and building engineering.

[0040] Combined with Figure 2 and Figure 3As shown in the figure, the locking member 3 includes a locking bolt 31 which is installed through screwing on the outer surface of the sleeve 21. The locking bolt 31 is located above the limiting ring 23, and an operating handle 32 is fixedly installed at one end of the locking bolt 31 away from the sleeve 21. By rotating the operating handle 32, the locking bolt 31 can be driven to rotate, so that it fits against the outer surface of the elevation column 1 to maintain the fixation between the sleeve 21 and the elevation column 1. Reversely rotating the operating handle 32 can separate the locking bolt 31 from the outer surface of the elevation column 1 and release the fixation of the sleeve 21.

[0041] To prevent the sleeve 21 from rotating, two rib grooves 212 are provided on the inner barrel wall of the sleeve 21, and two positioning ribs 12 are fixedly installed on the outer surface of the upper end of the elevation column 1. The rib grooves 212 are slidably connected to the corresponding positioning ribs 12, which can ensure that the sleeve 21 can slide up and down, so as to ensure that the position of the reading window 211 of the sleeve 21 always corresponds to the height marking position of the elevation column 1.

[0042] Finally, to ensure that after the elevation column 1 is driven into the ground, the starting end of the height marking on its outer surface can be flush with the ground, a fixing plate 11 is fixedly installed on the outer surface of the lower end of the elevation column 1. The fixing plate 11 is vertically arranged with respect to the elevation column 1. When the elevation column 1 is driven into the ground and the lower surface of the fixing plate 11 fits against the ground, the starting end of the height surface of the elevation column 1 is flush with the ground.

[0043] The present invention also provides a method for using an elevation control device in the construction of a frozen soil subgrade. The method includes the steps:

[0044] a. In the construction of a frozen soil subgrade, along both sides of the predetermined laying road, at an interval distance of not less than 50 cm, drive a plurality of elevation columns 1 into the ground. After ensuring driving in, the lower surface of the fixing plate 11 is closely attached to the ground, and the starting end of the height marking of the elevation column 1 is flush with the ground, so as to provide a stable and accurate reference point for subsequent elevation control.

[0045] b. After the elevation columns are installed, by rotating the operating handle 32, drive the locking bolt 31 to rotate and release its fixed constraint on the soil type carrier sleeve 2. According to the elevation value required for construction, after sliding the soil type carrier sleeve 2 up and down on the elevation column 1, re-tighten the locking bolt 31 against the outer surface of the elevation column 1. During this process, with the cooperation of the reading window 211 and the conical finger 62, the height position of the L-shaped threading hole 7 can be accurately determined to ensure the accuracy of elevation adjustment.

[0046] c. After completing the elevation adjustment of the soil form carrier sleeve 2, for each elevation column 1, flexibly rotate the wire connecting block A41 and the wire connecting block B51 so that their orientations meet the construction requirements. Pass the steel wire rope through the L-shaped wire threading holes 7 of the wire connecting block A41 and the wire connecting block B51 in sequence, and apply uniform force to pull the steel wire rope tight. Subsequently, use the tightening bolt 71 to firmly fix the steel wire rope in the L-shaped wire threading hole 7. Thus, the wire pulling operation between two adjacent elevation columns 1 is completed, providing a standard reference line for the road paving and compaction processes.

[0047] d. During the layered paving construction of the road, according to the elevation requirements of each layer of construction, the fixation of the soil form carrier sleeve 2 can be released in a timely manner, and the elevation adjustment can be carried out again to meet the construction requirements of different layered paving. After each layer of paving operation is completed, connect the steel wire ropes between two wire connecting blocks C61 that are diagonally opposite or front and back relative to each other. Taking this steel wire rope as a reference, the elevation of the middle position of the paved road is detected. When the road surface fits the steel wire rope, it indicates that the paving height of the road surface meets the standard; if the road surface is lower than the steel wire rope, it means that the paving height is insufficient, and building materials need to be supplemented in a timely manner and compaction operations need to be carried out; if the steel wire rope shows abnormal arching, that is, the middle of the road surface is higher than both sides, road rolling or ramming equipment should be immediately used to compact the road surface to ensure that the road surface is level with the roads on both sides and meets the quality standards of road construction.

Claims

1. An elevation control device, characterized in that, It includes a elevation column (1) with a height identifier. A soil-type carrier sleeve (2) is sleeved on the upper section of the elevation column (1). A locking member (3) is provided between the soil-type carrier sleeve (2) and the elevation column (1). A transfer ring A (4), a transfer ring B (5) and a hollow ring (6) are rotatably installed in the soil-type carrier sleeve (2). The transfer ring A (4), the transfer ring B (5) and the hollow ring (6) are arranged in sequence from top to bottom. Wire connection blocks A (41), wire connection blocks B (51) and wire connection blocks C (61) are respectively and fixedly installed on the outer surfaces of the transfer ring A (4), the transfer ring B (5) and the hollow ring (6). The wire connection blocks A (41), the wire connection blocks B (51) and the wire connection blocks C (61) are respectively used for connecting the steel wire ropes between two elevation columns (1). L-shaped wire passing holes (7) are respectively and penetratingly opened at the ends of the wire connection blocks A (41), the wire connection blocks B (51) and the wire connection blocks C (61) far away from the soil-type carrier sleeve (2). The three L-shaped wire passing holes (7) are all on the same circumferential horizontal plane. And fastening bolts (71) are respectively and screwed on the sides of the wire connection blocks A (41), the wire connection blocks B (51) and the wire connection blocks C (61) far away from the soil-type carrier sleeve (2). The fastening bolts (71) penetrate through the corresponding L-shaped wire passing holes (7); Both the wire connection block A (41) and the wire connection block B (51) are Z-shaped. The length of the wire connection block C (61) is less than half of the lengths of the wire connection block A (41) and the wire connection block B (51); The soil-type carrier sleeve (2) includes a sleeve (21). A reading window (211) is penetratingly opened on the outer surface of the sleeve (21). And a support ring (22) is fixedly installed on the lower surface of the sleeve (21). The upper surface of the support ring (22) is in contact with the lower surface of the hollow ring (6). A limit ring (23) is fixedly installed on the outer surface of the upper section of the sleeve (21). The lower surface of the limit ring (23) is in contact with the upper surface of the transfer ring A (4).

2. The elevation control device according to claim 1, wherein A tapered finger (62) is fixedly installed on the side of the wire connection block C (61) close to the sleeve (21). The tapered finger (62) and the L-shaped wire passing hole (7) are in the same circumferential horizontal position.

3. A height control device according to claim 2, characterized in that, The locking member (3) includes a locking bolt (31). The locking bolt (31) is penetratingly and screwed on the outer surface of the sleeve (21). The locking bolt (31) is above the limit ring (23). And an operation handle (32) is fixedly installed at the end of the locking bolt (31) far away from the sleeve (21).

4. The elevation control device according to claim 3, characterized in that, Two rib grooves (212) are opened on the inner barrel wall of the sleeve (21). Two positioning ribs (12) are fixedly installed on the outer surface of the upper end of the elevation column (1). A sliding connection is provided between the rib grooves (212) and the corresponding positioning ribs (12).

5. The elevation control device according to claim 4, characterized in that, A fixing plate (11) is fixedly installed on the outer surface of the lower end of the elevation column (1). The fixing plate (11) is vertically arranged with the elevation column (1).

6. A method for using an elevation control device in the construction of a subgrade in frozen soil sections, which is used based on the elevation control device described in claim 5, characterized in that, The method includes the steps: a. During the subgrade construction in the frozen soil section, drive multiple elevation columns (1) into the ground at intervals of not less than 50 cm on both sides of the predetermined road laying path; b. After the elevation columns are installed, rotate the operation handle (32) to drive the locking bolt (31) to rotate, release its fixed constraint on the soil-type carrier sleeve (2), and according to the elevation value required for construction, slide the soil-type carrier sleeve (2) up and down on the elevation column (1), and then press the locking bolt (31) against the outer surface of the elevation column (1) again for fastening; c. After completing the elevation adjustment of the soil-type carrier sleeve (2), for each elevation column (1), flexibly rotate the wire connecting block A (41) and the wire connecting block B (51) to make their orientations meet the construction requirements. Pass the steel wire rope through the L-shaped wire threading holes (7) of the wire connecting block A (41) and the wire connecting block B (51) in sequence, and apply uniform force to pull the steel wire rope tight. Then, use the tightening bolt (71) to firmly fix the steel wire rope in the L-shaped wire threading hole (7). Thus, the wire pulling operation between two adjacent elevation columns (1) is completed, providing a standard reference line for the road laying and compaction processes; d. During the layered road laying construction, the fixation of the soil-type carrier sleeve (2) can be released in a timely manner according to the elevation requirements of each layer of construction, and the elevation adjustment can be carried out again to meet the construction requirements of different layered laying. After each layer of laying operation is completed, connect a steel wire rope between two diagonally opposite or front-back opposite wire connecting blocks C (61), and use this steel wire rope as a reference to detect the elevation of the middle position of the laid road.

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