JP2002074404A - Three-dimensional road design supporting system effectively utilizing map data - Google Patents

Abstract

PROBLEM TO BE SOLVED: To output simple evaluation information which can be examined and evaluated visually by selecting a road route on a map. SOLUTION: This system is provided with map data 1, having three- dimensional(3D) geographical information, road structure discrimination data 2 having information for discriminating the road structure of the road route corresponding to 3D geographical features, input means 3 for selectively inputting the road route, road structure discriminating means 7 for discriminating the road structure on the basis of the map data and the road structure discrimination data, according to the road route selectively inputted by the input means, road design model generating means 8-11 for generating a road design model from the road structure discriminated by the road structure discriminating means 7 and output means 4 for outputting the road design model generated by the road design model generating means. The road route is selectively inputted on the map, and the discriminated result of the road structure corresponding to the geographical features and the road design model based on the result are outputted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional road design support system utilizing map data for providing evaluation information of a selected road route.

[0002]

2. Description of the Related Art GIS
(Geographic Information System: Geographic Information System or Map Information System) is a digital mapping (DM: Digital Mapping, electronic map) data set by the Geospatial Information Authority of the Ministry of Construction, and modeling information of geographical space by advanced use of computers. Its use is being studied in a wide range of business as an information system that provides the GIS (see, for example, Hiroyuki Sakurai, "GIS Electronic Map Revolution", Toyo Keizai Shinposha, the first printing issued on October 16, 1997).

[0003] The DM data includes, for example, information on a general map that describes the form of the ground surface and the facilities (roads, railways, main buildings, etc.) and names present therein, a housing map, a city planning map, a road map, and a land use map. , A cadastral map, a sightseeing map, a vegetation map, a population map, and the like. Also, since the DM data has a feature classification code, the feature classification code can be used to specify, for example, a boundary from a prefecture to a small-sized world, traffic facilities including various roads and railways, buildings including buildings and various facilities, and manholes.・ Public facilities including fire hydrants, tanks, etc. ・ Small objects, water areas including rivers, weirs, piers, etc., slopes, enclosures, various land, land use including vegetation, etc., contour lines, reference points, deformed areas, etc. It is possible to freely select and extract information such as terrain included.

For example, a contour line can be selected from a feature classification code to model a terrain based on the contour line. As a method of modeling this terrain, TIN (Triangula
A tedIrregular Network (irregular network) model is known. TIN is a method of modeling the terrain with a triangular network connecting between contour lines and independent elevation points.

In earthwork design such as road design in a road construction project, a route is selected after grasping the current land use situation, topography, etc., and the structure of the road (cutting, embankment, bridge, tunnel) is examined, and a site for planning is selected. Examination of scope, examination of incidental structures,
A wide variety of studies and evaluations, such as cost estimation and evaluation, are required. However, TI using conventional DM data
In N-dimensional 3D terrain model, even if a planning line is set on the model, the terrain subject to road planning is deleted, and the volume and area of the DM is calculated, examined, and evaluated, and DM data processing work is performed. Etc. were manual. Therefore, there has been a problem that work efficiency is poor and the time and cost required are enormous.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and enables to output simple evaluation information which can be visually examined and evaluated by selecting a road route on a map. Things.

For this purpose, the present invention provides a three-dimensional road design support system utilizing map data for providing evaluation information of a selected road route. Road structure determination data having information for determining the road structure of the road route,
Input means for selecting and inputting a road alignment; road structure determining means for determining a road structure based on the map data and road structure determining data according to the road route selected and input by the input means; and the road structure determining means. A road design model generating means for generating a road design model based on the determined road structure, and an output means for outputting the road design model generated by the road design model generating means.

The map data is composed of a plurality of layers of map data having different attributes. The map data has a layer of map data relating to terrain and a layer of map data relating to land use classification. Is characterized by having data for automatically arranging ancillary structures for each road structure, wherein the road design model generating means generates a still image such as a bird's-eye view or a moving image such as a driving simulation image as a road design model. Select and arrange ancillary structures for each road structure, generate a map in which the road land area is superimposed, create a design drawing and output it from the output means, road land area for each land use classification,
A road land cost is calculated, an approximate construction cost is calculated for each road structure, and output from the output means.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing an embodiment of a three-dimensional road design support system utilizing map data according to the present invention, wherein 1 is map data, 2 is road structure discrimination data, 3 is an input device, 4 is an output device, 5 is a road design support processing device, 6 is a three-dimensional terrain generation unit, 7 is a road structure determination unit,
Reference numeral 8 denotes a road model generation unit, 9 denotes an approximate value calculation unit, 10 denotes an incidental structure generation unit, 11 denotes a simulation unit, and 12 denotes a design drawing preparation unit.

In FIG. 1, a map data 1 is composed of, for example, a plurality of layers, and has terrain, ground surface,
It consists of map data of land use classification, houses, aerial photographs (digital orthophotos), roads, railways, water systems, retaining walls and slopes, and administrative boundaries. Road structure discrimination data 2
Corresponds to the road structure (cut,
Embankment, bridge, tunnel)
Further, it has information for arranging incidental structures such as guardrails, lightings, and trees. Input device 3
Is a pointing device such as a keyboard and a mouse for inputting selection of a road alignment based on a horizontal alignment and a vertical alignment. Examples of the display include a display for displaying images and the like and a printer for printing and outputting.

The road design support processing device 5 determines the road structure based on the map data 1 and the road structure determination data 2 according to the road route selected and input from the input device 3, and based on the road structure, the road route evaluation information and A three-dimensional terrain generating unit 6 for generating a three-dimensional terrain; a road structure determining unit 7 for determining a road structure according to a road route; A road model generation unit 8 that analyzes a planned land area to generate a road model, an approximate value calculation unit 9 that calculates an estimated land cost and an estimated construction cost, and an incidental structure generation unit that arranges incidental structures necessary for roads 10, a simulation unit 11 for performing simulation by CG software, and a design drawing creating unit 12.

The three-dimensional terrain generation unit 6 includes a TIN module, a three-dimensional house generation module, and a three-dimensional land use classification generation module, generates three-dimensional terrain from contour lines of map data, and further generates a house and land use thereon. This is to generate a model that combines information on situations. T
The IN module is for creating a smooth terrain shape by interpolating between contour lines into a mesh using triangles. When a road route is selected and input, the three-dimensional terrain of the road route is deleted and the triangle is removed. Modify the triangle model so that does not cross the road line. The three-dimensional house generation module creates a three-dimensional house model by using the representative point data of the house shape and the height of the map data. A three-dimensional land use classification is created using the data and land use classification data.

The road structure discriminating unit 7 has a linear calculation module for calculating the coordinates of the horizontal and vertical alignments of the road.
The difference between the coordinates of the vertical alignment and the coordinates of the terrain generated by the three-dimensional terrain generation unit 6 and the road structure discrimination data 2 according to the surrounding terrain
And determines whether the road structure is cut, embankment, bridge, or tunnel. For example, if the difference between the vertical alignment coordinates and the terrain coordinates is small, it is determined that the road structure is cut or embankment.If the difference between the vertical alignment coordinates and the terrain coordinates is large, the bridge or tunnel Judge as the road structure.

The road model generating section 8 generates a road model by structuring cuts, embankments, bridges, and tunnels in accordance with the determined road structure to determine a range surrounded by the bottom line as a planned site range. The approximate value calculation unit 9 includes an approximate land cost calculation module and an approximate construction cost calculation module. Then, the approximate land cost calculation module calculates an approximate land area for each land use class of the structured road model, and further calculates an approximate land cost based on a unit price for each land use class. The approximate construction cost calculation module calculates the approximate construction cost for each of the earthwork section, bridge section, and tunnel section of the structured road model, and further calculates the approximate construction cost based on each unit price. The incidental structure generation unit 10 outputs the road structure discrimination data 2
With reference to the above, ancillary structure models such as guardrails, lightings, and trees are arranged according to the respective road structures of cut, embankment, bridge, and tunnel, and ancillary structure models are generated. The simulation unit 11 performs a landscape simulation such as a running simulation, a still image, and a moving image using the three-dimensional road model and the incidental structure model generated by the road model generating unit 8 and the incidental structure generating unit 10, respectively. The design drawing creation unit 12 creates design drawings such as a design longitudinal section / cross sectional view of any cross section, a design plan view, and a plan view of any horizontal cross section based on the three-dimensional road model and the attached structure model.

FIG. 2 is a diagram for explaining an outline of processing of a three-dimensional road design support system utilizing map data according to the present invention, FIG. 3 is a diagram showing an example of a road alignment selection input screen, and FIG. FIG. 5 is a diagram showing an example of a structure discrimination screen and a plan land area grasping screen. FIG. 5 is a diagram showing an example of an orthophoto superimposing screen and a current land use grasping screen. FIG. 6 is a plane alignment creation screen and vertical alignment. FIG. 7 shows an example of a creation screen of FIG.
FIG. 8 is a diagram illustrating an example of a three-dimensional road model generation screen, FIG. 8 is a diagram illustrating an example of a three-dimensional road model generation screen viewed from the driver's seat of a car, and FIG. is there.

In the processing of the three-dimensional road design support system utilizing map data according to the present invention, as shown in FIG. 2, first, map data is read (step S11), three-dimensional terrain is generated and displayed on a screen. (Step S12).
Then, the horizontal alignment (road center position) shown in FIG. 3A is examined, the point data is analyzed from the determined horizontal alignment, and the vertical alignment shown in FIG. 3B is created. A road route is selected by defining (planned elevation) (step S13). Next, the road structure (cut, embankment, bridge, tunnel) is determined as shown in FIG. 4 by analyzing the terrain from the planned profile defined according to the selected road route (step S1).
4) Generate a road model (step S15). At the same time, it will be possible to calculate the amount of earthwork and the estimated construction cost.

FIG. 4B shows an example of a screen in which the area surrounded by the normal line (planned land area) is superimposed on the topographic map and displayed as an analysis result. Figure 5 (A) shows an example of a screen in which the planned land area is superimposed and displayed on the digital orthophoto so that the current state of clothing can be checked at the same time. FIG. 5 shows an example of displaying the figure.
(B). As a result, it is possible to calculate the area for each land in the planned land area and calculate the approximate land cost. By summing up the numerical values obtained as a result of various analyzes in this way, it is possible to quantitatively evaluate one route and examine multiple routes, create more study plans, and compare the evaluation results By doing so, it is also possible to extract an optimal route according to the purpose.

Next, a rough design of the road is performed (step S).
16). In the schematic design of this road, FIG.
The horizontal alignment shown in FIG. 6A and the cross-sectional alignment shown in FIG. 6B are created, and the three-dimensional road model generation screen shown in FIG. 7 and the driver's seat at an arbitrary point shown in FIG. Generate a three-dimensional road model as seen, create a longitudinal section shown in FIG. 9A, create a cross section shown in FIG.
Design tunnels roughly. As a result, the amount of earthwork and the estimated construction cost can be calculated for each road structure. Then, a CG presentation is created (step S
17) Further, ancillary structures are created (step S1).
8) A CG presentation is created (step S19). In addition, as a support for the business plan, an area for each land use, an approximate land cost, and a cost for each road structure are calculated (step S20).

The present invention is not limited to the above embodiment, and various modifications are possible. For example, in the above-described embodiment, the processes of generating a road model, calculating an approximate value, generating ancillary structures, and outputting a simulation image based on the selection of a road route have been described. Procedures such as repeatedly examining the site by selecting multiple road routes, executing a rough design of multiple roads by generating a road model, calculating the approximate cost first and examining it, etc. It goes without saying that the procedure and combination of the processing can be arbitrarily adopted according to the purpose, such as changing the processing appropriately or repeating the processing in the middle. In addition, although it has been described that information for arranging ancillary structures such as guardrails, lighting, and trees is included in the road structure identification data, the arrangement data of the ancillary structures may be different.

[0020]

As is apparent from the above description, according to the present invention, there is provided a three-dimensional road design support system utilizing map data for providing evaluation information of a selected road route. , Road structure discrimination data having information for discriminating the road structure of the road route corresponding to the three-dimensional terrain, input means for selecting and inputting the road alignment, and input data selected by the input means. Road structure discriminating means for discriminating the road structure based on the map data and road structure discriminating data according to the road route; road design model generating means for generating a road design model based on the road structure discriminated by the road structure discriminating means; Output means for outputting the road design model generated by the model generation means. It is possible to provide a road design model based on the discrimination result of the response to road construction and result.

The map data is composed of a plurality of layers of map data having different attributes. The map data has a layer of map data relating to terrain and a layer of map data relating to land use classification. Since there is data for automatically arranging ancillary structures for each road structure, a layer can be selected to provide a road design model with desired attributes.

Further, a still image such as a bird's-eye view or a moving image such as a driving simulation image is generated as a road design model by the road design model generating means, ancillary structures are selectively arranged for each road structure, and a road land area is overlapped. Generate a combined map, create a design drawing and output it from the output means, calculate the road area and road cost for each land use classification, calculate the approximate construction cost for each road structure, and output Since the output is further output, it is possible to provide evaluation information of a road route that is easy to visually examine and evaluate, and further to provide a specific road design drawing.

[Brief description of the drawings]

FIG. 1 is a diagram showing an embodiment of a three-dimensional road design support system utilizing map data according to the present invention.

FIG. 2 is a diagram for explaining a processing outline of a three-dimensional road design support system utilizing map data according to the present invention.

FIG. 3 is a diagram illustrating an example of a road alignment selection input screen;

FIG. 4 is a diagram showing an example of a road structure discrimination screen and a plan land area grasp screen.

FIG. 5 is a diagram showing an example of an orthophoto overlay screen and a current land use grasp screen.

FIG. 6 is a diagram showing examples of a plane alignment creation screen and a vertical alignment creation screen.

FIG. 7 is a diagram illustrating an example of a three-dimensional road model generation screen.

FIG. 8 is a diagram showing an example of a three-dimensional road model generation screen viewed from the driver's seat of a car.

FIG. 9 is a diagram showing an example of creating a longitudinal section and a cross section.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Map data, 2 ... Road structure discrimination data, 3 ... Input device, 4 ... Output device, 5 ... Road design support processing device, 6 ... 3
Dimensional terrain generation unit, 7: road structure determination unit, 8: road model generation unit, 9: approximate value calculation unit, 10: incidental structure generation unit,
11: simulation part, 12: design drawing preparation part

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09B 29/00 G09B 29/00 A (72) Inventor Hideo Yagi 2nd Rokubancho, Chiyoda-ku, Tokyo Kokusai Kogyo (72) Inventor: Masashi Yoshikawa, 2nd, Rokubancho, Chiyoda-ku, Tokyo Kokusai Kogyo Co., Ltd. (72) Inventor: Hideo Kashiya 2nd, Rokubancho, Chiyoda-ku, Tokyo, Kokusai Kogyo (72) Inventor Takeshi Ichikawa 2nd Rokubancho, Chiyoda-ku, Tokyo F-term within Kokusai Kogyo Co., Ltd. BA17 CA07 EA19 EA24 EA27 FA02 FA03 FA13 FA19

Claims (12)

[Claims] 1. A three-dimensional road design support system utilizing map data for providing evaluation information of a selected road route, the map data having three-dimensional terrain information, and the road route corresponding to the three-dimensional terrain. Road structure discrimination data having information for discriminating the road structure, input means for selecting and inputting a road alignment, and the map data and the road structure discrimination data in accordance with the road line selected and input by the input means. A road structure determining means for determining a road structure; a road design model generating means for generating a road design model based on the road structure determined by the road structure determining means; and a road design model generated by the road design model generating means. An output means for outputting, comprising: a three-dimensional road design support system. 2. The three-dimensional road design support system according to claim 1, wherein said map data is composed of a plurality of layers of map data having different attributes. 3. The map data according to claim 2, wherein the map data includes a map data layer related to terrain and a map data layer related to land use classification.
-Dimensional road design support system. 4. The three-dimensional road design support system according to claim 1, wherein said road structure discrimination data includes data for automatically arranging ancillary structures for each road structure. 5. The method according to claim 1, wherein the road design model generation means generates a still image such as a bird's eye view as a road design model and outputs the still image from the output means.
-Dimensional road design support system. 6. The three-dimensional road design support system according to claim 1, wherein the road design model generating means generates a moving image such as a driving simulation image as a road design model and outputs the generated moving image from the output means. 7. The three-dimensional road design support system according to claim 5, wherein ancillary structures are selectively arranged for each road structure. 8. The three-dimensional road design support system according to claim 1, wherein the road design model generating means generates a map in which road areas are superimposed as a road design model and outputs the map from the output means. 9. The three-dimensional road design support system according to claim 1, wherein the road design model generating means creates a design drawing as a road design model and outputs the drawing from the output means. 10. The three-dimensional road design support system according to claim 1, wherein said road design model generating means calculates a road land area for each land use classification as a road design model and outputs the calculated road land area from said output means. . 11. The three-dimensional road design support system according to claim 1, wherein the road design model generating means calculates a road land cost for each land use class as a road design model and outputs the calculated land cost from the output means. . 12. The road design model generating means calculates an approximate construction cost for each road structure as a road design model and outputs the calculated construction cost from the output means.
A three-dimensional road design support system as described.