SPATIAL TRANSITION CURVES AS A GEODETIC GRID OF A GIVEN SURFACE

LE CURVE SPAZIALI DI RACCORDO COME GEODETICHE DI UNA DATA SUPERFICI

In the normal treatment of skidding equilibrium on a superelevated curve (a treatment which is based on the assumption of the rigidity of the vehicle and of considering as a plane problem one which is essentially spatial) it is supposed that the resultant of the weight and centrifugal forces applied to the vehicle centre of gravity, are constantly normal to the trajectory which the carriageway maintains with the vertical plane containing the vector of centrifugal force. More usually, in road and rail construction, the carriageway constitutes a grid, which renders inappropriate the generally applied dictum of normality between the resultant force and the carriageway surface. This paper presents a treatment of spatial transition curves as a geodetic grid of a given surface. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03732916
• Corporate Authors:

  Permanent International Assoc of Road Congresses

  Via Andreani 4
  Milan,   Italy 
• Authors:
  • Baschieri, L
• Publication Date: 1979-7-8

Language

• Italian

Media Info

• Pagination: p. 267-321
• Serial:
  • Strade
  • Volume: 81
  • Issue Number: 1185
  • Publisher: Casa Editrice la fiaccola
  • ISSN: 0373-2916

Subject/Index Terms

• TRT Terms: Cartographic grids; Centrifugal force; Curves (Geometry); Equilibrium (Mechanics); Geodesy; Grids (Transmission lines); Mathematical models; Skidding; Stiffness; Surfaces; Vehicles; Weight
• ITRD Terms: 5404: Centrifugal force; 7145: Equilibrium; 4094: Grid; 6473: Mathematical model; 1645: Skidding; 6438: Surface; 1255: Vehicle
• Subject Areas: Design; Highways; Planning and Forecasting; Vehicles and Equipment; I21: Planning of Transport Infrastructure;

Filing Info

• Accession Number: 00316941
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Feb 6 1981 12:00AM