JP4868579B2 - Ramp system - Google Patents

Description

The present invention melts snow that has accumulated or frozen on an inclined road surface such as various roads, ensures an appropriate gradient without making the inclined road surface gentle, and shortens the length of the approach portion of the road surface. The present invention relates to a ramp system designed to shorten the construction delivery time and reduce the construction cost.

As a first example of this type of conventional technology, there is a wind-based snow melting system disclosed in Japanese Patent Application Laid-Open No. 2003-35250 as shown in FIG. If it demonstrates about this, in this system, the wind power generator A is comprised by the Darrieus type | mold windmill 1 and the synchronous generator (alternator) 2. FIG. When the windmill 1 is rotated by the wind W, the rotating shaft of the synchronous generator 2 is rotated, and AC power is generated in the synchronous generator 2 by this rotation. The AC power is supplied to the electric heater through the power supply path 3. The power supply path 3 is provided with a transformer (voltage regulator) 3a, which can adjust the supply voltage. The electric heater 4 generates electric power and generates heat. For example, the electric heater 4 is configured using a planar heating element containing carbon. Further, since the planar heating element is installed outdoors, it is covered with a covering material made of resin or the like and waterproofed. A latent heat storage material 5 is provided on the electric heater 4 so as to be in contact therewith. The latent heat storage material 5 has a latent heat temperature set at a temperature at which the snow S melts, and the temperature shown in FIG. That is, the latent heat storage material 5 having the property of storing heat by spending heat applied at a temperature of about 5 ° C. for state change is used. As the latent heat storage material 5, a material obtained by sealing an inorganic hydrate salt in a resin bag (container) is used. And it is the structure by which the cover member 6 for covering this on the latent-heat storage material 5 is provided.

A second example of this type of conventional technology is a paved road storing a heat storage material, and there is a technology disclosed in Japanese Patent Laid-Open No. 7-243202 as shown in FIG. If it demonstrates about this, FIG. 3 has shown sectional drawing of the paved road which stored the thermal storage material B. FIG. In FIG. 3, the surface layer 7, the base layer 8, the roadbed 9, and the roadbed 10 are shown, and the storage container 11 storing the heat storage material B is embedded in the base layer 8. FIG. 3 shows the case of an asphalt paved road. In the case of a concrete paved road, the surface layer 7 and the base layer 8 form the same layer. For example, the thickness of the surface layer 7 is 5 cm, and the thickness of the base layer 8 is also 5 cm. Of course, the thickness of each of the layers 7 and 8 is not limited, but the surface layer 7 to be scraped off when repairing a damaged or aged road surface is required to have a sufficient thickness. 11 are embedded in a base layer 8 provided at a depth that does not become an obstacle during repair. Therefore, in the case of a concrete paved road, it is provided at a depth of several cm to 7 cm to 8 cm from the upper surface of the surface layer 7. And as an effect | action of the said structure, when the thermal storage material B stored in the storage container 11 exists in a liquid state, if this thermal storage material B is cooled, it will become below a freezing point, and after that, the thermal storage material B will be solid from a liquid. Change to phase. Depending on the heat storage material B, it may be supercooled, but when the phase changes from liquid to solid, solidification is continued while maintaining the freezing point temperature. Therefore, at this time, the heat storage material B releases latent heat and gives thermal energy to the road surface C, and as a result, the road surface C is prevented from freezing. In this second example, a heat storage material B that changes phase at a temperature slightly higher than the temperature at which the road surface C freezes is used. In some cases, even if the heat storage material B that changes phase at 1 to 8 ° C. is used, a certain effect can be obtained. Until all the heat storage material B changes to a solid phase, the heat energy is released and heat is applied to the road surface. The heat storage material B once changed into a solid state is given heat energy from the road surface. Return to liquid again. This is because the daytime temperature rises and the road surface temperature rises, and heat is transferred from the road surface C to the heat storage material B, so that the phase changes from solid to liquid. The heat storage material B that has obtained latent heat in the form of liquid again changes phase from liquid to solid when the air temperature drops at dawn, and heats the road surface C. In the second example, the road surface is prevented from freezing using the phase change of the heat storage material B.
Japanese Patent Laid-Open No. 2003-35250 Japanese Patent Laid-Open No. 7-243202

The conventional technique has the following problems because of the configuration and operation described above. That is, according to the wind-powered snow melting system as a first example in the prior art, the collected energy is directly used for snow melting, and the energy of the wind W rotates the windmill 1, The rotational force is converted into an electric signal by the synchronous generator 2, and this electric signal is directly introduced into the electric heater 4 to cause the electric heater 4 below the road surface to generate heat, and the snow S on the road surface through the latent heat storage material 5. It is not a technology to melt snow that has accumulated on the slope. Further, it is necessary to provide the snow melting function with the electric heater 4 and the latent heat storage material 5 for each part of the road surface, and the snow melting device and the snow melting system become complicated and large-scale and expensive, and the snow melting effect is a large amount of energy directly generated. There was a problem that it was greatly affected by small, snow melting efficiency was poor and not suitable for practical use.
Further, according to the paved road storing the heat storage material as the second example in the prior art, the heat storage material B has the property of changing phase from liquid to solid before and after several degrees Celsius. It is a freezing prevention technology that uses the heat of solidification that occurs at the time, and it is not a technology that prevents the freezing phenomenon of the road surface due to snow accumulated on the inclined road surface, and it is not suitable for the snow melting technology positively on the inclined road surface There was a problem.

The ramp system according to the present invention converts natural energy such as wind energy, solar heat, geothermal heat, heat of decomposition of organic matter by microorganisms, kinetic energy such as vibration force into heat or electric energy, and this heat or electric energy is converted into the ramp surface. A snow melting system that supplies to the pavement provided inside the ground, for example, using the ground heat stored in the ground or the roadbed for the snow melting system, used to prevent snow accumulation and freezing on the sloped road surface, A technology that shortens the construction delivery time and reduces construction costs by setting the length of the approach portion of the sloped road surface short without designing the sloped road more gently than necessary. It is established from.
That is, according to the first aspect of the present invention, an inclined road surface in which a predetermined composite gradient is formed on the upper surface of a roadbed (ground) provided in a civil engineering / building structure, and an embedded or laid underground surface of the inclined road surface. a pavement for snow melting snow and snow on the upper surface, consisting of a geothermal collected pile of conducting geothermal heat energy in a predetermined embedded depth was GHP were collected and the pavement of the road bed (ground) configuration The geothermal sampling piles are left and right geothermal sampling piles, each of which is embedded to a predetermined depth in the roadbed, and is formed of a double coaxial pipe made of a polyethylene bag composed of an inner pipe and an outer pipe. And

According to a second aspect of the present invention, in the first aspect of the present invention, the combined slope of the inclined road surface is set in a range of 8 (%) to 12.5 (%).

The ramp system according to the present invention has the following effects because it has the above-described configuration and operation.
That is, according to the present invention of mounting according to claim 1 and 2 SL, circulating water from the heat supply pipe and return through the heat supply pipe left, the inner tube of the right geothermal taken pile after descending towards the pile away The outer pipe is lifted up and sent again to the left and right pavements. This repeated operation has the effect of conducting ground heat energy in a rational manner without causing heat loss and quickly melting snow accumulated on the left side, right side pavement or left side, right side slope road surface. In addition, it ensures vehicle driving safety and climbing ability, eases road alignment, shortens the length of approach on the sloped road surface, and extends application to urban areas and places where land acquisition is a problem. As a result, the construction cost can be reduced. In addition, when the road is located in an area where the degree of snow and cold is frequent, it is applied to the place where the composite gradient is 8%, and the road alignment is relaxed to the general composite gradient of 10% by the road structure ordinance. There is an effect that the length of the approach portion can be shortened by about 2% with respect to the height difference. Further, for example, a snow melting system that supplies geothermal heat, which is clean energy, as heat or electric energy to a pavement provided inside an inclined road structure through a geothermal collection pile that collects geothermal heat becomes possible. There is an effect that heat or electric energy supplied to can be used mainly for freezing prevention and snow melting function.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a ramp system according to the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 is a vertical sectional view showing an example of an embodiment of a ramp system according to the present invention.

Reference numeral 12 denotes a civil engineering / building structure such as an underpass or an overpass. Reference numeral 13 denotes a ground or roadbed adjacent to or below the civil engineering / building structure 12. The roadbed 13 forms inclined road surfaces 13a and 13b on the left and right of the upper surface 13A. The left and right inclined road surfaces 13a and 13b have, for example, a composite gradient set to 10 (%) and are inclined in opposite directions. A left pavement 14a and a right pavement 14b are buried or laid inside the respective road structures on the left inclined road surface 13a and the right inclined road surface 13b. The left and right pavement bodies 14a and 14b are made of the same material as the heat supply pipe 16, for example, as a circulation pipe structure.
Here, the composite gradient is a gradient obtained by combining a longitudinal gradient and a single gradient or a cross gradient, and the value is determined according to the road design speed.

Reference numeral 15 a denotes a left-side geothermal sampling pile, which is connected to the left-side pavement 14 a through a heat supply pipe 16. Reference numeral 15 b denotes a right-side geothermal collection pile that is connected to the right-side pavement 14 b through a heat supply pipe 16. The left and right geothermal sampling piles 15a and 15b are respectively embedded to a predetermined depth in the road bed 13 to collect underground heat in the ground 13. Here, the left and right geothermal sampling piles 15a and 15b are, for example, polyethylene bag double coaxial pipes composed of an inner pipe and an outer pipe, and the pile length is set to about 70 to 200 (m). It is determined from the amount of underground heat energy to be collected and the configuration conditions of the roadbed 13. The collected underground thermal energy is conducted from the left and right geothermal sampling piles 15a and 15b through the heat supply pipes 16 and 16 to the left pavement 14a and the right pavement 14b, respectively. The left side, right side pavement 14a, the upper surface portion or the left 14b, right inclined road surface 13a, if there is frozen or snow by snow S to 13b, you snow melting it.

Next, the operation | movement etc. based on embodiment of the ramp system which concerns on this invention are demonstrated.
The above-mentioned roadbed (ground) 13 has geothermal energy, and the left and right geothermal sampling piles 15a and 15b collect this geothermal energy. The left and right ground heat collection piles 15a and 15b are hydraulically connected to the left and right pavement bodies 14a and 14b by heat supply pipes 16 and 16 in a closed loop. For example, a separate pump serves as a heat medium. Pump and circulate the circulating water. Circulating water returned through the heat supply pipes 16 and 16 from the circulation heat supply pipes constituting the internal structure of the left and right pavements 14a and 14b is contained in the left and right geothermal sampling piles 15a and 15b. After descending the pipe toward the pile tip, the outer pipe is raised and again sent to the left and right pavements 14a and 14b. By repeating this operation, the underground thermal energy is conducted to melt the snow S accumulated on the left and right pavements 14a and 14b or the left and right inclined road surfaces 13a and 13b.

Generally, in cold snowy areas, the left and right inclined road surfaces 13a and 13b are gently sloping according to criteria related to road gradients in other areas from the viewpoint of vehicle safety and climbing ability during freezing and snow accumulation. For example, it is strictly required to have a synthetic gradient of about 8% or less. That is, before applying the system of the present invention, the combined gradient of the left and right inclined road surfaces 13a and 13b is set to 8 (%). The combined gradient is preferably set to 8 (%) to 12.5 (%) so as to conform to the structure of the left and right inclined road surfaces 13a and 13b. The gradient angles θ01 and θ02 are the horizontal distances from the base end P1 to the upper end P2 of the left and right inclined road surfaces 13a and 13b, that is, the lengths L01 and L02 of the approach portions of the left and right inclined road surfaces. When the present invention shown in FIG. 1 is applied, the slope of the inclined road surface can be made somewhat steep while ensuring the safety of traveling of the vehicle, and the combined gradient of the left and right inclined road surfaces 13a and 13b is 10 (%). Can be set to about. As shown in FIG. 1, when the slopes θ1 and θ2 are set, and the lengths L1 and L2 of the left and right inclined road surface approaches, the relations θ1> θ01, θ2> θ02, L1 <L01, and L2 <L02 are established. The approach portions L1 and L2 can be set shorter than the lengths L01 and L02 of the previous approach portions. Therefore, the safety and the climbing ability of the vehicle are ensured, the road alignment is relaxed, and the length of the approach portions L1 and L2 of the left and right inclined road surfaces 13a and 13b is shortened by the composite gradient 2 (%) in the above example. As a result, it has become possible to expand application to urban areas and places where there are problems with land expropriation, and construction costs could be reduced without extending construction.

An embodiment of the ramp system according to the present invention will be described.
The configuration example of the embodiment of the ramp system according to the present invention described above is a case where two slope road surfaces, that is, the left and right slope road surfaces 13a and 13b are formed on the upper surface 13A of the roadbed (ground) 13, and the left A snow melting system provided with two right pavements 14a and 14b and two left and right geothermal collection piles 15a and 15b is provided.
The snow melting system according to the embodiment is a small-scale snow melting system, and forms a single inclined surface on the upper surface 13A of the roadbed (ground) 13, thereby deploying a single geothermal sampling pile and a single pavement. Configure. Even with such a snow melting system, the object of the present invention can be achieved.

Further, the present invention can be applied to the snow melting system by converting kinetic energy such as wind power, solar heat, decomposition heat of organic matter by microorganisms, friction / vibration, and the like into heat or electric energy other than underground heat energy.
Further, the present invention circulates the ground thermal energy from the roadbed (ground) 13 through a medium such as antifreeze or air, supplies it to the left and right pavements 14a and 14b as the heat medium and electric medium, Using heat or electric energy as a heat source, snow accumulation on the left and right inclined road surfaces 13a and 13b is prevented, freezing is prevented, road surface conditions are improved, and vehicle running safety and climbing ability are ensured. On the other hand, the heat source medium, that is, the circulating material, is the circulating water, the heat pipe, etc. in addition to the circulating water described above, and is supplied to demand points such as the left and right pavements 14a and 14b through this. In the case of electrical energy, it is supplied through electric wires.

It is a vertical sectional view showing an embodiment of a ramp system according to the present invention. It is a block diagram which shows the snow melting system using a wind force as a 1st example in the prior art. It is a block diagram which shows the paved road which stored the thermal storage material as a 2nd example in the prior art.

12 Civil engineering and building structures 13 Roadbed (Earth)
13A Top surface of roadbed (ground) 13a Left slope road surface 13b Right slope road surface 14a Left pavement 14b Right pavement 15a Left geothermal collection pile 15b Right geothermal collection pile 16 Heat supply pipe θ1 Left slope slope angle θ2 Right slope slope Angle L1 Length of approach section on left slope road surface L2 Length of approach section on right slope road surface

Claims (2)

An inclined road surface having a predetermined composite gradient formed on the upper surface of the roadbed (earth) provided in the civil engineering / building structure; in the structure formed by the geothermal collected pile of conducting geothermal heat energy in a predetermined embedded depth was GHP were collected and the pavement of the road bed (ground), the geothermal collecting piles left, right A ramp system characterized in that the pile is a geothermal sampling pile, each of which is embedded to a predetermined depth in the roadbed, and is composed of a double coaxial pipe made of polyethylene bags composed of an inner pipe and an outer pipe . 2. The ramp system according to claim 1, wherein a composite gradient of the ramp surface is set in a range of 8 (%) to 12.5 (%).

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