Fabricated air-cooled roadbed

Abstract

The utility model relates to the technical field of road engineering, and particularly discloses an assembly type air-cooled roadbed which comprises a roadbed section arranged above a frozen soil layer, the frozen soil layer is filled by adding a block stone extrusion layer, the flatness and stability of the bottom of the roadbed can be ensured, and a block stone filling layer is filled above the block stone extrusion layer through an assembly type reinforcement cage structure. The stability of the block stone layer is improved through the fabricated reinforcement cage, prefabricated hoisting construction can be achieved, and the particle size distribution of the block stone layer is guaranteed; a plurality of ventilation pipes are arranged above the block stone filling layer, roadbed filling soil is arranged at the upper ends of the ventilation pipes, the ventilation pipes can cool the roadbed by natural ventilation and strengthening the strength of natural convection of the block stone filling layer, a plurality of concave ventilation grooves are formed in the slope surface of the roadbed, the ventilation grooves are coated with heat reflection paint, and the ventilation grooves can adjust the temperature of the slope surface. The heat reflection coating reflects solar radiation, and heat is prevented from being conducted into the roadbed from the slope position to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to road engineering technical field, specifically disclose the assembled air cooling roadbed. BACKGROUND

[0002] Frozen soil is a kind of special rock and soil with ice at negative temperature or zero temperature, which is closely related to human social and economic development and natural ecological environment. Major projects, human settlements, energy bases and other infrastructure are distributed in frozen soil area. With the influence of climate warming and human activities, the safety of engineering and human settlements is threatened, and the problems of thawing and frost heaving of roadbed are faced in the construction of traffic engineering in frozen soil area.

[0003] Block stone roadbed is the mainstream of the current roadbed cooling technology, but there are problems such as inconvenience in construction of block stone layer, particle size distribution not up to standard after construction, etc., which makes the cooling performance of block stone layer not up to standard. At the same time, due to the solar radiation law, the temperature difference between the two sides of the roadbed slope is large, forming the problem of yin and yang slope, which is easy to cause uneven settlement of roadbed. UTILITARIAN CONTENT

[0004] Therefore, the purpose of the utility model is to provide an assembled air cooling roadbed, which solves the problems of inconvenience in construction of block stone layer, particle size distribution not up to standard, temperature difference on the slope surface of roadbed, and thawing and cracking of frozen soil roadbed.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: an assembled air cooling roadbed, characterized by comprising a roadbed section and a drainage section arranged above the frozen soil layer.

[0006] The roadbed section and the drainage section are arranged in parallel, and the drainage section is arranged on one side of the roadbed section.

[0007] The roadbed section comprises a block stone extrusion layer, a foundation cushion layer is arranged above the block stone extrusion layer, and a geomembrane is arranged on both sides of the foundation cushion layer.

[0008] A reinforcement cage is arranged above the foundation cushion layer, a block stone filling layer is filled in the inner space of the reinforcement cage, the reinforcement cage has a ladder structure, and an anti-weathering coating is coated on the slope surface of both sides of the reinforcement cage.

[0009] A middle cushion layer is arranged above the reinforcement cage, and a filling layer is arranged at the upper end of the middle cushion layer.

[0010] A ventilation pipe is arranged through the filling layer, a wide mouth section is arranged at one end of the ventilation pipe, and a grid is embedded in the middle position of the filling layer.

[0011] A roadbed is arranged above the filling layer, road curbs are arranged along both sides of the road above the roadbed, and guardrails are installed at the upper end of the road curbs.

[0012] The slopes on both sides of the fill layer are respectively covered with slope protection made of multiple ventilation bricks;

[0013] The drainage section includes a drainage ditch, and a drainage channel is provided above the drainage ditch. The drainage channel has a wide-mouthed U-shaped cross-section.

[0014] The drainage ditch is located below the drainage channel and has an internal channel. A drainage pipe runs through the inside of the internal channel, and a compaction layer is filled between the drainage pipe and the internal channel.

[0015] Furthermore, a base plate is attached to the lower end of the ventilation pipe, and several base plate insert rods are provided at the lower end of the base plate, with the surface of the base plate insert rods inserted into the interior of the middle pad layer.

[0016] Furthermore, pipe limiting seats are respectively provided on both sides of the upper end of the base plate, and the pipe limiting seats distributed on both sides are in close contact with the ventilation pipe.

[0017] Furthermore, a load-bearing frame is provided above the ventilation duct, and the inner wall of the load-bearing frame is slidably fitted to both sides of the base plate.

[0018] Furthermore, the upper end of the pipe limiting seat has multiple lower rod seats distributed longitudinally, and the upper end of the inner wall of the load-bearing frame has multiple upper rod seats distributed longitudinally, with the same support rod inserted between adjacent upper and lower rod seats.

[0019] Furthermore, reinforcing seats are provided on both sides of the load-bearing frame, and several reinforcing rods are fixedly distributed at the lower end of the reinforcing seats, with the surface of the reinforcing rods embedded in the interior of the middle pad layer.

[0020] Furthermore, pin grooves are provided on both sides of the base plate, and a locking pin is slidably sleeved inside the pin groove. A spring is provided inside the pin groove, and an arc-shaped groove is opened on the inner wall of the load-bearing frame. The arc-shaped end of the locking pin is slidably engaged with the arc-shaped groove.

[0021] The working principle and beneficial effects of this scheme are as follows: 1. By using a riprap compression layer to fill the frozen soil layer, the flatness and stability of the roadbed base can be guaranteed. Through the structure of the steel cage and the riprap filling layer inside, the compressive stability of the lower roadbed layer can be guaranteed, and the lower roadbed layer will not become loose and collapse due to excessive pressure, unlike conventional soil filling structures. Then, in the backfill area of ​​the middle layer of the roadbed, ventilation pipes are buried. The ventilation pipes can enhance the air circulation inside the roadbed, reduce the humidity and temperature of the roadbed, thereby improving the stability of the roadbed. The ventilation pipes can provide a drainage channel to quickly drain the water inside the roadbed, reduce the moisture content of the roadbed, and prevent the roadbed from being damaged by moisture accumulation.

[0022] 2. In order to ensure that the ventilation pipe can have good durability, the bottom plate and the load-bearing frame structure are increased to surround the ventilation pipe and provide good compression protection when the ventilation pipe is buried in the filling layer, the bottom plate is inserted through the bottom plate, the load-bearing frame is inserted through the reinforcing rod below the connecting reinforcing seat on both sides, and the two types of rods are all buried in the middle cushion layer to maximize the stability of the ventilation pipe. The ventilation pipe is positioned by the pipe limiting seat, and the support rod structure is added to the pipe limiting seat between the load-bearing frame and the bottom plate, which can support the load-bearing frame from the inside and prevent deformation and improve the compression support capacity.

[0023] Other advantages, objects and features of the present application will be apparent from the following detailed description of the application and will be apparent to those skilled in the art in view of the teachings herein, or will be learned from the practice of the application. The objects and other advantages of the present application will be realized and attained by the methods and compositions particularly pointed out in the written description and claims hereof. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The overall schematic diagram of the embodiment is shown in the figure.

[0025] Figure 2 The distribution schematic diagram of the roadbed section and the drainage section of the embodiment is shown in the figure.

[0026] Figure 3 The enlarged schematic diagram of A of the embodiment is shown in the figure.

[0027] Figure 4 The structure schematic diagram of the ventilation pipe buried in the filling layer of the embodiment is shown in the figure.

[0028] Figure 5 The front structure schematic diagram of the embodiment is shown in the figure. Figure 4

[0029] Figure 6 The enlarged schematic diagram of B of the embodiment is shown in the figure.

[0030] ​Icons: 1-Frozen soil layer, 2-Subgrade section, 3-Drainage section, 20-Rock compaction layer, 21-Foundation cushion layer, 22-Geomembrane, 23-Reinforcing cage, 24-Rock filling layer, 231-Weatherproof coating, 25-Intermediate cushion layer, 26-Soil fill layer, 261-Ventilation pipe, 262-Wide opening section, 263-Grid, 27-Road surface, 271-Cutting edge, 272-Guardrail, 28-Ventilation brick, 30-Drainage 31-Drainage channel, 32-Drainage pipe, 33-Firming layer, 2610-Base plate, 2611-Pipe limiting seat, 2612-Base plate insert rod, 2613-Bearing frame, 2614-Lower rod seat, 2615-Support rod, 2616-Upper rod seat, 2617-Reinforcing seat, 2618-Reinforcing insert rod, 2620-Pin groove, 2621-Clamping pin, 2622-Spring, 2623-Arc groove. Detailed Implementation

[0031] The following detailed description illustrates the specific implementation method:

[0032] Example

[0033] like Figures 1 to 6 As shown, a prefabricated air-cooled roadbed is disclosed, including a roadbed section 2 and a drainage section 3 set above a frozen soil layer 1. The roadbed section 2 and the drainage section 3 are distributed in parallel, and the drainage section 3 is set on one side of the roadbed section 2. The roadbed section 2 includes a boulders compression layer 20. A foundation cushion layer 21 is laid on top of the boulders compression layer 20. Geomembranes 22 are respectively set on both sides of the foundation cushion layer 21. The geomembranes 22 are located between the foundation cushion layer 21 and the boulders compression layer 20. The geomembranes 22 on both sides are distributed in parallel. The geomembranes 22 are made of high-density ethylene material and have good corrosion resistance and aging resistance.

[0034] like Figures 1-3 As shown, a steel cage 23 is installed above the foundation pad 21. The internal space of the steel cage 23 is filled with a stone filling layer 24. The steel cage 23 has a stepped structure. The two sides of the steel cage 23 are coated with a weathering-resistant coating 231. The weathering-resistant coating 231 is made of fluorocarbon material, which has sufficient weather resistance and corrosion resistance.

[0035] like Figures 1-3 As shown, a middle bedding layer 25 is laid on top of the reinforcing cage 23. The middle bedding layer 25 is used to level the uneven area at the top of the reinforcing cage 23. Both the middle bedding layer 25 and the foundation bedding layer 21 are made of crushed stone material, which has good permeability and stability. In summer, it facilitates ventilation. The crushed stone blocks can keep the entire subgrade at a low temperature. In winter, the crushed stone blocks can absorb heat and keep the internal temperature of the subgrade stable, preventing the subgrade from having a large temperature difference in extremely cold climates, which could lead to subsidence.

[0036] The upper end of the middle cushion layer 25 is provided with a filling layer 26, the inside of the filling layer 26 is provided with a ventilation pipe 261, the ventilation pipe 261 is equidistantly distributed along the longitudinal position, one end of the ventilation pipe 261 is provided with a wide mouth section 262, the wide mouth section 262 is used for increasing the air inlet amount, the middle position of the filling layer 26 is further embedded with a grid 263, the grid 263 can improve the compactness of the filling layer 26 as a whole, increase the overall strength and stability, prevent the filling from cracking, the upper of the filling layer 26 is paved with a road surface 27, the upper of the road surface 27 is provided with a curbstone 271 along the two sides of the road, the upper end of the curbstone 271 is installed with a guardrail 272, the curbstone 271 cooperates with the guardrail 272, which can ensure the falling safety of the road surface 27 after passing through the road.

[0037] As shown in Figures 1-3 The two side slopes of the filling layer 26 are respectively paved with a slope protection made of a plurality of ventilation bricks 28, the ventilation brick 28 is a concave brick with heat reflecting ability, the surface of the brick is designed as a concave shape, which increases the space for air flow and helps to enhance the ventilation effect, the surface of the brick is coated with a layer of heat reflecting material, which can effectively reflect solar radiation heat and reduce the heat absorption of the wall body, the inside of the brick is designed with a ventilation channel, which allows air to flow inside the channel, further enhances the ventilation and heat dissipation effect, reduces the heat absorption of the slope, and eliminates the temperature difference at different slope positions.

[0038] As shown in Figure 1 , 2 The drainage section 3 comprises a drainage ditch 30, the upper of the drainage ditch 30 is provided with a drainage channel 31, the cross-sectional shape of the drainage channel 31 is a wide-mouthed U-shaped structure, the drainage ditch 30 and the lower of the drainage channel 31 are provided with an embedded channel, the inside of the embedded channel is provided with a drainage pipe 32, the drainage pipe 32 and the embedded channel are filled with a compacting layer 33, the compacting layer 33 is filled with small-volume sandstone, the drainage channel 31 can drain the accumulated water on the road surface, when the accumulated water on the road surface is too much, the accumulated water seeps into the compacting layer 33, and the accumulated water is drained along the direction of the compacting layer 33, the drainage pipe 32 is inserted into the foundation, and underground water can be drained from the drainage pipe 32.

[0039] As shown in Figures 1-6As shown, the lower end of the ventilation pipe 261 is provided with a bottom plate 2610, the lower end surface of the bottom plate 2610 is laid on the middle cushion layer 25, the lower end of the bottom plate 2610 is provided with a plurality of bottom plate insertion rods 2612, the surface of the bottom plate insertion rod 2612 is inserted into the inside of the middle cushion layer 25, and the lower end of the bottom plate insertion rod 2612 is a tapered structure, the two sides of the upper end of the bottom plate 2610 are respectively provided with pipe limiting seats 2611, the lower end of the pipe limiting seat 2611 is fixedly assembled with the bottom plate 2610 through screws, the pipe limiting seats 2611 distributed on both sides are in close contact with the ventilation pipe 261, the upper side of the ventilation pipe 261 is covered with a bearing frame 2613, the inner wall surface of the bearing frame 2613 is in sliding close contact with the two sides of the bottom plate 2610, a plurality of lower rod seats 2614 are distributed on the upper end of the pipe limiting seat 2611 along the longitudinal direction, the lower end of the lower rod seat 2614 is fixedly assembled with the pipe limiting seat 2611 through screws, a plurality of upper rod seats 2616 are distributed on the inner wall upper end of the bearing frame 2613 along the longitudinal position, the upper end of the upper rod seat 2616 is fixedly assembled with the bearing frame 2613 through screws, the upper rod seat 2616 at any position is provided in correspondence with the lower rod seat 2614, a same support rod 2615 is inserted between the upper rod seat 2616 and the lower rod seat 2614 which are adjacent to each other, the support rod 2615 can be used to support the inside of the bearing frame 2613, so that the bearing frame 2613 has an anti-pressure protection effect when pressing the ventilation pipe 261, the support rod 2615 further protects the inside of the bearing frame 2613;

[0040] The two sides of the bearing frame 2613 are respectively provided with reinforcing seats 2617, the reinforcing seat 2617 can avoid the ventilation pipe 261 from being greatly deviated or being greatly extruded due to the activity of the soil layer of the filling layer 26 after the bearing frame 2613, the ventilation pipe 261 and the bottom plate 2610 and other structures are buried in the filling layer 26, the upper end of the reinforcing seat 2617 is fixedly assembled with the side surface of the bearing frame 2613 through screws, a plurality of reinforcing insertion rods 2618 are fixedly distributed on the lower end of the reinforcing seat 2617, the surface of the reinforcing insertion rod 2618 is buried in the inside of the middle cushion layer 25;

[0041] The two sides of the bottom plate 2610 are respectively provided with pin grooves 2620, the inside of the pin groove 2620 is slidably sleeved with a pin 2621, the end of the pin 2621 is an arc surface structure, the inside of the pin groove 2620 is provided with a spring 2622, the two ends of the spring 2622 are fixedly assembled with the surface of the pin 2621 and the inside of the pin groove 2620, an arc-shaped groove 2623 is formed on the inner wall of the bearing frame 2613, the arc surface end of the pin 2621 is slidably connected with the arc-shaped groove 2623, through the expansion and contraction of the pin 2621 matched with the spring 2622, the sliding and clamping assembly with the arc-shaped groove 2623 can be realized, and the efficiency of the assembly of the bottom plate 2610 and the bearing frame 2613 is facilitated.

[0042] In particular implementation

[0043] By laying the roadbed section 2 on the frozen soil layer 1, a certain space is reserved on the frozen soil layer 1, and the space is filled by the block stone extrusion layer 20, which can improve the structural stability of the region, then the foundation cushion layer 21 is laid on the block stone extrusion layer 20, which can be used for leveling the region above the block stone extrusion layer 20, and in order to prevent the frozen soil layer 1 and the block stone extrusion layer 20 from being connected at the position, water seepage from outside to inside may occur, which affects the durability of the block stone extrusion layer 20, and the geomembrane 22 structure is added on both sides of the foundation cushion layer 21, which can be used for waterproof protection;

[0044] The block stone is made into a reinforced cage 23, and the assembly type construction is assembled on site, the top steel of the reinforced cage 23 is welded to form a whole, the required block stone is screened and processed in the stone yard to form a block stone filling layer 24, and then placed in the cage with prefabricated size, and then hoisted and assembled together on site to become the lower structure of the roadbed section 2, and the weathering-resistant coating 231 is coated on the two sides of the outward area of the reinforced cage 23, which can have an anti-aging and durable ability, and after the construction of the roadbed lower structure formed by the reinforced cage 23 and the block stone filling layer 24 is completed, the middle cushion layer 25 is laid on the top of the reinforced cage 23, which is used for compacting and leveling the concave-convex part on the top of the reinforced cage 23; The assembly type reinforced cage 23 increases the stability of the two block stone layers, and can be prefabricated and hoisted for construction, which ensures the particle size distribution of the stone in the block stone layer; In winter, convection is generated to cool the internal stone layer, and in summer, part of the cold energy stored in the stone layer is released, so that the internal roadbed keeps low temperature, and cold energy storage is realized.

[0045] Then, the ventilation pipe 261 structure is laid on the upper part of the middle cushion layer 25, and the construction process is as follows: first, the bottom plate 2610 is laid on the designated position, then the bottom plate 2610 is fixed by inserting the bottom plate inserting rod 2612 into the middle cushion layer 25, so that the position deviation caused by soil extrusion after the backfilling of the soil layer 26 is avoided, then the ventilation pipe 261 is arranged at the longitudinal middle position of the bottom plate 2610, and the pipe limiting seat 2611 is arranged on both sides, the lower end of the pipe limiting seat 2611 is fixed with the bottom plate 2610, so that the position of the ventilation pipe 261 is limited, then the lower rod seat 2614 is fixed at the upper end of the pipe limiting seat 2611 at equal intervals, the upper rod seat 2616 is fixed on the inner side of the pre-installed bearing frame 2613, the support rod 2615 is first inserted and connected with the lower rod seat 2614, then the bearing frame 2613 is covered on the ventilation pipe 261, and the upper end of the support rod 2615 can be inserted and connected with the upper rod seat 2616, so that the bearing frame 2613 is completely connected with the bottom plate 2610 and is completely covered, then the reinforcing seat 2617 is installed with the bearing frame 2613, the reinforcing inserting rod 2618 at the lower end of the reinforcing seat 2617 can be completely inserted into the middle cushion layer 25, so that the position of the bearing frame 2613 is limited and fixed.

[0046] After the bearing frame 2613 is completely connected with the bottom plate 2610, the pin 2621 can be clamped into the arc-shaped groove 2623, so that the bearing frame 2613 and the bottom plate 2610 are quickly positioned and connected, and the principle is that the arc-shaped end of the pin 2621 is extruded with the inner arc surface of the arc-shaped groove 2623, so that the pin is quickly connected and installed.

[0047] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should be considered as the protection range of the present application, and these will not affect the effect and practicability of the present application.

Claims

1. A fabricated air-cooled subgrade, characterized by: It includes a roadbed section (2) and a drainage section (3) set above the frozen soil layer (1); the roadbed section (2) and the drainage section (3) are distributed in parallel, and the drainage section (3) is set on one side of the roadbed section (2); the roadbed section (2) includes a boulders compression layer (20), a foundation cushion layer (21) is laid on top of the boulders compression layer (20), and geomembranes (22) are respectively set on both sides of the foundation cushion layer (21); a steel cage (23) is set on top of the foundation cushion layer (21), the internal space of the steel cage (23) is filled with a boulders filling layer (24), the steel cage (23) is a stepped structure, a middle cushion layer (25) is laid on top of the steel cage (23), and a soil filling layer (26) is set at the upper end of the middle cushion layer (25); A ventilation pipe (261) is installed through the interior of the fill layer (26), and a wide section (262) is provided at one end of the ventilation pipe (261). A grid (263) is also embedded in the middle of the fill layer (26). A road surface (27) is laid on top of the fill layer (26), and slope protection composed of multiple ventilation bricks (28) is laid on both sides of the fill layer (26). The drainage section (3) includes a drainage ditch (30) set on one side of the slope protection.

2. The assembled air-cooled roadbed of claim 1, wherein: The lower end of the ventilation pipe (261) is fitted with a base plate (2610), and the lower end of the base plate (2610) is provided with several base plate (2610) insert rods, the surface of the base plate (2610) insert rods being inserted into the interior of the middle pad layer (25).

3. The assembled air-cooled roadbed of claim 2, wherein: The upper end of the base plate (2610) is provided with pipe limiting seats (2611) on both sides, and the pipe limiting seats (2611) distributed on both sides are in close contact with the ventilation pipe (261).

4. The assembled air-cooled roadbed of claim 3, wherein: The ventilation duct (261) is covered by a load-bearing frame (2613), and the inner wall of the load-bearing frame (2613) is slidably attached to both sides of the base plate (2610).

5. The assembled air-cooled roadbed of claim 4, wherein: The upper end of the pipe limiting seat (2611) has a plurality of lower rod seats (2614) distributed longitudinally, and the upper end of the inner wall of the load-bearing frame (2613) has a plurality of upper rod seats (2616) distributed longitudinally. The same support rod (2615) is inserted between the upper rod seats (2616) and the lower rod seats (2614) that are adjacent to each other.

6. The assembled air-cooled roadbed of claim 5, wherein: The load-bearing frame (2613) is provided with reinforcing seats (2617) on both sides respectively. Several reinforcing rods (2618) are fixedly distributed at the lower end of the reinforcing seats (2617). The surface of the reinforcing rods (2618) is embedded in the interior of the middle pad layer (25).

7. The assembled air-cooled roadbed of claim 6, wherein: The base plate (2610) has pin grooves (2620) on both sides, and a locking pin (2621) is slidably sleeved inside the pin groove (2620). A spring (2622) is installed inside the pin groove (2620). An arc-shaped groove is opened on the inner wall of the load-bearing frame (2613), and the arc end of the locking pin (2621) is slidably locked with the arc-shaped groove.

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