A roadbed antifreeze structure in seasonal frozen soil areas and its construction method

Abstract

The present invention relates to the technical field of roadbed in frozen soil areas, and specifically to an antifreeze structure for roadbed in seasonal frozen soil areas and a construction method thereof, wherein the antifreeze structure comprises an insulation plate, wherein the insulation plate comprises a left side plate and a right side plate, wherein one end of the left side plate and the right side plate are both inclined to form an inclined plate, and arc grooves are provided on the opposite surfaces of the left side plate and the right side plate, and the arc grooves are combined to form a through hole for a heating rod to pass through, and two arc blocks are provided above the through hole, and an adjustment component is installed between the arc block and the left side plate or the right side plate, and a plurality of plug rods are vertically installed on the bottom surfaces of the left side plate, the right side plate and the inclined plate. The present invention has a simple structure, fully utilizes the existing column resources on the site, and plays a role in reducing the construction cost, and is convenient to install and disassemble. At the same time, the left side plate, the right side plate and the inclined plate can prevent the invasion of cold energy in the cold season and slow down the freezing degree of the roadbed structure.

Description

Technical Field

[0001] The invention relates to the technical field of roadbed in frozen soil areas, and in particular to an antifreeze structure for roadbed in seasonal frozen soil areas and a construction method thereof. Background Art

[0002] During the construction of the Qinghai-Tibet Highway and the Qinghai-Tibet Railway, measures to protect permafrost were proposed, such as high fill roadbed, thermal insulation roadbed, heating rods and ventilation ducts. In the existing technology, radiation protection panels are often used for protection to block both sides of the roadbed and reduce the temperature impact of solar radiation. However, traditional radiation protection panels may be damaged or aged after long-term use. Moreover, since radiation protection panels are usually fixed with brackets and bolts, they are inconvenient to disassemble and maintain. At the same time, in actual use, the antifreeze effect of relying solely on heating rods is not ideal. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a roadbed antifreeze structure in a seasonal frozen soil area and a construction method thereof, wherein the insulation board can be directly installed on a heating rod on the frozen soil layer and fixed by the heating rod, thereby facilitating installation and disassembly.

[0004] The present invention is achieved through the following technical scheme: a seasonal frozen soil area roadbed antifreeze structure, including an insulation plate, the insulation plate including a left side plate and a right side plate, one end of the left side plate and the right side plate are inclined to form an inclined plate, the left side plate and the right side plate are provided with arc grooves on the opposite surfaces, the arc grooves are combined to form a through hole for the heating rod to pass through, two arc blocks are provided above the through hole, and adjustment components are installed between the arc blocks and the left side plate or the right side plate, and multiple plug rods are vertically installed on the bottom surfaces of the left side plate, the right side plate and the inclined plate.

[0005] As a preferred technical solution, the adjusting components include bearings, a barrel and a screw. The bearings are embedded in the bottom surface of the arc block, the upper end of the barrel is installed in the inner ring of the bearing, the upper end of the screw is inserted into the barrel and is threadedly connected to the barrel, and the lower end is respectively installed on the left plate or the right plate. The middle part of the barrel is reduced inward to form an adjusting part, and a nut is welded and fixed on the adjusting part.

[0006] As a preferred technical solution, a plurality of positioning parts are protruded from the left side plate and the inclined plate connected thereto, and a plurality of positioning grooves are provided on the right side plate and the inclined plate connected thereto, and one end of the positioning part is inserted into the positioning groove.

[0007] As a preferred technical solution, the left side plate, the right side plate and the inclined plate are all made of radiation protection plates.

[0008] As a preferred technical solution, the arc-shaped blocks are combined to form a ring body, and the middle hole of the ring body is arranged vertically opposite to the through hole.

[0009] As a preferred technical solution, the inclination of the inclined plate matches the inclined surfaces on both sides of the roadbed.

[0010] As a preferred technical solution, it also includes a heat-conducting plate, a heat-conducting rod and a heat-conducting cloth 14 installed in the roadbed, the heat-conducting plate is connected to the heating rod, the space between the heat-conducting plate and the heat-conducting cloth is filled with roadbed soil, and the upper surface of the heat-conducting plate and the lower surface of the heat-conducting cloth are coated with a far-infrared radiation coating layer.

[0011] As a preferred technical solution, the heat conducting rod includes a cross bar and vertical rods evenly arranged on the upper and lower surfaces of the cross bar. The lower end of the vertical rod passes through the heat conducting plate and is fixed to the heat conducting plate, and the upper end abuts against the heat conducting cloth.

[0012] The present invention also provides a construction method for the above-mentioned seasonal frozen soil area roadbed antifreeze structure, comprising the following steps:

[0013] S1. Excavate the foundation with a depth of about 50 cm and anchor the heat conduction plate at the bottom of the foundation pit;

[0014] S2. Apply a far-infrared radiation coating layer on the upper top surface of the heat conducting plate, and install a heat conducting rod on the heat conducting plate;

[0015] S3, backfilling foundation soil between the heat conducting rods until the foundation soil covers the entire heat conducting rod;

[0016] S4. Level the site and compact the roadbed to a compaction degree of not less than 95%;

[0017] S5. Apply a far-infrared radiation coating layer on the lower bottom surface of the heat-conducting cloth and lay it on the compacted roadbed;

[0018] S6. Lay a gravel layer on the heat-conducting cloth with a thickness of about 50 cm, and insert a heating rod into the roadbed so that the side of the heating rod abuts against the heat-conducting rod;

[0019] S7. Lay a filler layer on the gravel layer with a paving thickness of 30 cm;

[0020] S8. Lay a cement-stabilized gravel layer on the filler layer with a paving thickness of 30 cm;

[0021] S9. Paving the road surface layer on the cement stabilized crushed stone layer;

[0022] S10. Complete the installation of the insulation board.

[0023] The beneficial effects of the present invention are:

[0024] 1) The insulation board can be directly installed on the heating rod on the frozen soil layer without the use of bolts, etc., and it is fixed by the heating rod, which makes full use of the existing column resources on the site and reduces the construction cost. It is easy to install and disassemble. At the same time, the left plate, right plate and inclined plate can prevent the invasion of cold energy in the cold season and slow down the freezing degree of the roadbed structure.

[0025] 2) A heating and heat-conducting cavity is formed by the heat-conducting plate, heat-conducting rod and heat-conducting cloth in cooperation with the heat-supplying rod, which can significantly increase the overall temperature of the roadbed, thereby improving the antifreeze effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the thermal insulation board in the present invention;

[0028] Figure 2 It is a structural schematic diagram of the right side plate in the present invention.

[0029] Figure 3 This is a schematic diagram of the structure after the insulation board is installed.

[0030] Figure 4 It is a structural schematic diagram of the frozen soil roadbed in the present invention.

[0031] Among them, 1. left side plate; 2. right side plate; 3. inclined plate; 4. positioning part; 5. screw; 6. arc groove; 7. nut; 8. cylinder; 9. arc block; 10-heating rod; 11. insertion rod; 12. positioning groove; 13-heat conducting rod; 14-heat conducting cloth; 15-far infrared radiation coating layer. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0034] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0035] like Figure 1 and Figure 2 As shown, a seasonal frozen soil area roadbed antifreeze structure of the present invention includes an insulation plate, wherein the insulation plate includes a left side plate 1 and a right side plate 2, one end of the left side plate 1 and the right side plate 2 are inclined to form an inclined plate 3, arc grooves 6 are provided on the opposite surfaces of the left side plate 1 and the right side plate 2, and the arc grooves 6 are combined to form a through hole for the heating rod to pass through, and two arc blocks 9 are provided above the through hole, and adjustment components are installed between the arc blocks 9 and the left side plate 1 or the right side plate 2, and a plurality of plug rods 11 are vertically installed on the bottom surfaces of the left side plate 1, the right side plate 2 and the inclined plate 3.

[0036] In this embodiment, the adjustment components include bearings, a barrel 8 and a screw 5. The bearings are embedded on the bottom surface of the arc block 9. The upper end of the barrel 8 is installed in the inner ring of the bearing. The upper end of the screw 5 is inserted into the barrel 8 and is threadedly connected to the barrel 8. The lower end is respectively installed on the left plate 1 or the right plate 2. The middle part of the barrel 8 is reduced inward to form an adjustment part, and a nut 7 is welded and fixed on the adjustment part.

[0037] In this embodiment, a plurality of positioning portions 4 are protruded from the left side plate 1 and the inclined plate 3 connected thereto, and a plurality of positioning grooves 12 are provided on the right side plate 2 and the inclined plate 3 connected thereto, and one end of the positioning portion 4 is inserted into the positioning groove 12, wherein the positioning groove and the positioning portion are arranged in a trapezoidal structure, and after insertion, they cannot be pulled out horizontally, thereby increasing the connection stability between the two.

[0038] In this embodiment, the left side plate 1, the right side plate 2 and the inclined plate 3 are all made of radiation protection plates.

[0039] In this embodiment, the arc blocks 9 are combined to form a ring body, and the middle hole of the ring body is arranged perpendicularly to the through hole.

[0040] In this embodiment, the inclination of the inclined plate matches the inclined surfaces on both sides of the roadbed, so that the inclined plate can be pressed on both sides of the roadbed and in close contact with the side surfaces of the roadbed.

[0041] In this embodiment, a heat conducting plate, a heat conducting rod 13 and a heat conducting cloth 14 are also included and installed in the roadbed. The heat conducting plate is connected to the heat supply rod 10. The space between the heat conducting plate and the heat conducting cloth 14 is filled with roadbed soil. The upper top surface of the heat conducting plate and the lower bottom surface of the heat conducting cloth 14 are coated with a far-infrared radiation coating layer 15.

[0042] In this embodiment, the heat conducting rod 13 includes a horizontal rod and vertical rods evenly arranged on the upper and lower surfaces of the horizontal rod. The lower ends of the vertical rods penetrate the heat conducting plate and are fixed to the heat conducting plate, and the upper ends of the vertical rods abut against the heat conducting cloth 14 .

[0043] The present invention also provides a construction method for a roadbed antifreeze structure in a seasonally frozen soil area, comprising the following steps:

[0044] S1. Excavate the foundation with a depth of about 50 cm and anchor the heat conduction plate at the bottom of the foundation pit;

[0045] S2, applying a far-infrared radiation coating layer 15 on the upper top surface of the heat conducting plate, and installing a heat conducting rod 13 on the heat conducting plate;

[0046] S3, backfilling foundation soil between the heat conducting rods 13 until the foundation soil covers the entire heat conducting rods 13;

[0047] S4. Level the site and compact the roadbed to a compaction degree of not less than 95%;

[0048] S5, applying a far-infrared radiation coating layer 15 on the lower bottom surface of the heat-conducting cloth 14, and laying it on the compacted roadbed;

[0049] S6. Lay a gravel layer on the heat-conducting cloth 14 with a thickness of about 50 cm, and insert a heating rod 10 into the roadbed so that the side of the heating rod 10 abuts against the heat-conducting rod 13;

[0050] S7. Lay a filler layer on the gravel layer with a paving thickness of 30 cm;

[0051] S8. Lay a cement-stabilized gravel layer on the filler layer with a paving thickness of 30 cm;

[0052] S9. Paving the road surface layer on the cement stabilized crushed stone layer;

[0053] S10, complete the installation of the insulation board. During the installation, the arc groove on the left plate and the arc groove on the right plate are respectively put on the heating rod. The installation needs to be carried out from top to bottom, and the right plate needs to be assembled first. After the right plate is located at the bottom, the left plate is installed so that the positioning part on the left plate can be inserted into the positioning groove, so that the two are plugged and positioned. After pressing down, the insertion rod can be inserted into the frozen soil layer to fix it;

[0054] In order to increase the firmness of the fixation, the nut can be rotated by a wrench. The rotation of the nut drives the barrel, so that the barrel moves upward along the screw. The movement of the barrel drives the arc block until the arc block contacts the wing blades on the heating rod. The extrusion between the wing blades can exert a downward pressure on the insulation board, thereby increasing the contact tightness between the wing blades and the frozen soil layer, and also increasing the firmness after installation.

[0055] Among them, the left side plate and the right side plate are sleeved on the heating rod, and the heating rod can play a positioning effect thereon.

[0056] When disassembling, the insulation board can be disassembled by simply rotating the cylinder downward and pulling out the plug rod upward, which increases convenience.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope defined in the claims.

Claims

1. A roadbed antifreeze structure in seasonal frozen soil areas, characterized by: The invention comprises a heat preservation plate, wherein the heat preservation plate comprises a left side plate (1) and a right side plate (2), one end of the left side plate (1) and the right side plate (2) are inclined to form an inclined plate (3), arc grooves (6) are provided on the opposite surfaces of the left side plate (1) and the right side plate (2), and the arc grooves (6) are combined to form a through hole for a heating rod (10) to pass through, and two arc blocks (9) are provided above the through hole, and an adjustment component is installed between the arc block (9) and the left side plate (1) or the right side plate (2), and a plurality of plug rods (11) are vertically installed on the bottom surfaces of the left side plate (1), the right side plate (2) and the inclined plate (3), and the heating rod (10) is provided with a plurality of plug rods (11) ... The heat rod (10) is provided with wings; it also includes a heat conducting plate (16), a heat conducting rod (13) and a heat conducting cloth (14) installed in the roadbed; the heat conducting plate (16) is connected to the heat supply rod (10); the heat conducting plate (16) and the heat conducting cloth (14) are filled with roadbed soil; and the upper top surface of the heat conducting plate (16) and the lower bottom surface of the heat conducting cloth (14) are both coated with a far-infrared radiation coating layer (15); the heat conducting rod (13) includes a cross bar and vertical bars evenly arranged on the upper and lower surfaces of the cross bar; the lower end of the vertical bar passes through the heat conducting plate (16) and is fixedly connected to the heat conducting plate (16); the upper end of the vertical bar abuts against the heat conducting cloth (14).

2. The seasonal frozen soil area roadbed antifreeze structure according to claim 1, characterized in that: The adjusting components all include bearings, barrels (8) and screws (5), the bearings are embedded in the bottom surface of the arc block (9), the upper end of the barrels (8) is installed in the inner ring of the bearing, the upper end of the screws (5) is inserted into the barrels (8) and is threadedly connected to the barrels (8), and the lower end is respectively installed on the left plate (1) or the right plate (2), the middle part of the barrels (8) is reduced inward to form an adjusting part, and a nut (7) is welded and fixed on the adjusting part.

3. The seasonal frozen soil area roadbed antifreeze structure according to claim 1, characterized in that: A plurality of positioning portions (4) are protruded from the left side plate (1) and the inclined plate (3) connected thereto, and a plurality of positioning grooves (12) are provided on the right side plate (2) and the inclined plate (3) connected thereto, and one end of the positioning portion (4) is inserted into the positioning groove (12).

4. The seasonal frozen soil area roadbed antifreeze structure according to claim 1, characterized in that: The left side plate (1), the right side plate (2) and the inclined plate (3) are all made of radiation protection plates.

5. The seasonal frozen soil area roadbed antifreeze structure according to claim 1, characterized in that: The arc-shaped blocks (9) are combined to form a ring body, and the middle hole of the ring body is arranged vertically opposite to the through hole.

6. The seasonal frozen soil area roadbed antifreeze structure according to claim 1, characterized in that: The inclination of the inclined plate matches the inclined surfaces on both sides of the roadbed.

7. A construction method for a seasonally frozen soil area roadbed antifreeze structure according to any one of claims 1 to 6, characterized in that: The steps include: S1, excavating the foundation, the excavation depth is about 50cm, and anchoring the heat conduction plate (16) at the bottom of the foundation pit; S2, applying a far-infrared radiation coating layer (15) on the upper top surface of the heat conducting plate (16), and installing a heat conducting rod (13) on the heat conducting plate (16); S3, backfilling foundation soil between the heat conducting rods (13) until the foundation soil covers the entire heat conducting rods (13); S4. Level the site and compact the roadbed to a compaction degree of not less than 95%; S5, applying a far-infrared radiation coating layer (15) on the lower bottom surface of the heat-conducting cloth (14), and laying it on a compacted roadbed; S6. Laying a gravel layer on the heat-conducting cloth (14) with a thickness of about 50 cm, and inserting a heating rod (10) into the roadbed so that the side of the heating rod (10) abuts against the heat-conducting rod (13); S7. Lay a filler layer on the gravel layer with a paving thickness of 30 cm; S8. Lay a cement-stabilized gravel layer on the filler layer with a paving thickness of 30 cm; S9. Paving the road surface layer on the cement stabilized crushed stone layer; S10. Complete the installation of the insulation board.

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