METHOD AND APPARATUS FOR FORMING BEARING COURSE OF TRAFFIC ROUTE

• US 20110295552A1
• Filed: 05/26/2011
• Published: 12/01/2011
• Est. Priority Date: 05/27/2010
• Status: Abandoned Application

• Current Assignee: Roadscanners Holding Oy
• Original Assignee: Roadscanners Oy
• Inventors: SAARENKETO, Timo
• Application Number:
  US13/116,172
• Publication Number:
  US 20110295552A1
• Time in Patent Office: Days
• US Class Current: 702/152
• CPC Class Codes: G01C 7/04 involving a vehicle which moves along the profile to be traced

Abstract

In the method an existing surface of a bearing course (120) of a traffic route is first chosen as the reference level (100), in relation to which the target level (150) of a surface of a bearing course to be formed is determined. After this the forming procedure of a bearing course is performed, in which the surface of a bearing course is brought to the target level. Typically the forming procedure comprises spreading, levelling and compacting of a soil layer on the surface of the reference level. The location of a traffic route is determined in the terrain as plane coordinate points (x_n, y_n) with a satellite positioning method and the elevation z_n of an existing bearing course chosen as the reference level is determined in each coordinate point (x_n, y_n) as cross sectional figures extending from the unchanged terrain on the first side of the traffic route over the surface of the traffic route to the unchanged terrain on the second side of the traffic route. The cross sectional figures are determined with laser scanning. The laser scanning can be performed form a vehicle (300) or a construction machine travelling along the traffic route.

Claims

1. A method for forming a bearing course (120) of a traffic route, in which method an existing surface of a bearing course of a traffic route is chosen as the reference level (100), a target level (150) of the surface of a bearing course to be formed is determined in relation to the reference level and a forming procedure of the bearing course is performed, in which procedure the surface of the bearing course is brought to said reference level, wherein

the location of the traffic route chosen as the reference level is determined in the terrain as plane coordinate points (x_n, y_n),

the elevation (z_n) of an existing bearing course chosen as the reference level is determined in each coordinate point (x_n, y_n) by determining a cross sectional figure of the reference level extending from the terrain, that stays unchanged during the formation of the bearing course, on the first side of the traffic route over the surface of the traffic route to the terrain, that stays unchanged during the formation of the bearing course, on the second side of the traffic route.

the location and cross sectional figures of the traffic route chosen as the reference level are saved in spatial coordinate points (x_n, y_n, z_nr) as the given value data file (242) of the forming of the bearing course.

2. The method according to claim 1, wherein the coordinate points (x_n, y_n) of the location of the traffic route are determined with a satellite positioning method, preferably with GPS positioning method.

3. The method according to claim 1, wherein the elevation (z_nt) of the target level (150) in each measurement point (x_n, y_n) is determined by adding the planned height h of the bearing surface (120) to the elevation (z_nr) of the reference level of said measurement point.

4. The method according to claim 3, wherein the elevation (z_nm) of the upper surface level of the formed bearing course (120) is determined in a coordinate point (x_n, y_n) and it is compared to the determined elevation (z_nt) of the reference level (150) in the same coordinate point.

5. The method according to claim 1, wherein the elevations (z_nm) of the upper surface level of the formed bearing course (120) and the elevations (z_nr) of the reference level (100) in the coordinate point (x_n, y_n) of the traffic route are determined with laser scanning.

6. The method according to claim 5, wherein laser scanning is performed from a vehicle (300) travelling along a traffic route.

7. The method according to claim 5, wherein laser scanning is performed from a construction machine travelling along the traffic route and participating in the forming of a bearing course (120).

8. The method according to claim 1 wherein a sub-base (120) of a traffic route is formed with the method.

9. The method according to claim 1 wherein a base course (120) of the traffic route is formed with the method.

10. The method according to claim 1 wherein a surface layer of a traffic route is formed with the method.

11. The method according to claim 1 wherein the upper surface of the bearing course below the bearing course (120) to be formed is chosen as the reference level.

12. The method according to claim 1 wherein the upper surface of the surface layer of the traffic route is chosen as the reference level.

13. An apparatus for forming a bearing course of a traffic course wherein said apparatus comprises

positioning means for determining the location of a traffic route chosen as the reference level in the terrain as coordinate points (x_n, y_n)

measuring means for determining the elevation (z_nr) of the surface of an existing bearing course of a traffic route in each coordinate point (x_n, y_n) as a cross sectional figure of the reference level extending from the terrain, that stays unchanged during the formation of the bearing course, on the first side of the traffic route over the surface of the traffic route to the terrain, that stays unchanged during the formation of the bearing course, on the second side of the traffic route and

saving means for saving the location and cross sectional figures of the traffic route chosen as the reference level as coordinate points (x_n, y_n, z_n) into a given value data file (242).

14. The apparatus according to claim 13, wherein said positioning means comprise satellite positioning means, preferably GPS positioning means (200).

15. The apparatus according to claim 13, wherein said positioning means comprise distance-measuring means placed in a vehicle, preferably a so-called precision trip meter.

16. The apparatus according to claim 13, wherein said measuring means for determining the elevation of the surface of a bearing course comprise a laser scanner (220).

17. The apparatus according to claim 16, wherein it further comprises an apparatus for measuring the inclination a of the laser scanner, such as a gyroscopic apparatus (260).

18. The apparatus according to claim 13, wherein said saving means for saving the location and elevation of the reference level comprise a computer (240) and a computer software loaded in the memory of a computer.

19. The apparatus according to claim 18, wherein said saving means further comprise an analysing software for processing measurement results and for controlling the construction work.

20. The apparatus according to claim 13, wherein said positioning means, measurement means and saving means are arranged in a vehicle (300).

21. The apparatus according to claim 13, wherein positioning means, measurement means and saving means are arranged in a construction machine used in the forming of a bearing course (120).