EFFECT OF THE CONSTRUCTION LAYOUT OF COMMERCIAL VEHICLES ON THE LOADING OF ROAD PAVEMENTS

EINFLUSS DER AUSLEGUNG VON NUTZFAHRZEUGEN AUF DIE STRASSENBEANSPRUCHUNG

THE LOADING AND WEAR TO WHICH A ROAD CARRIAGEWAY IS SUBJECTED CAN BE CONSIDERABLY REDUCED AND THE ECONOMIC USAGE OF THE ROAD INCREASED BY INTENTIONALLY MAKING THE GOODS VEHICLES AND ROAD COMPATIBLE. THE CARRIAGEWAY IS LOADED VERTICALLY BY THE WHEEL AND CONTACT PRESSURE FROM THIS. HORIZONTAL FORCES (ACCELERATION, BRAKING AND LATERAL GUIDING FORCES) PRODUCE SHEAR STRESSES ON BITUMEN-BOUND PAVEMENTS. CONSIDERABLY HIGHER LOADING CAN OCCUR IN SUMMER OR SPRING FROM WEATHER EFFECTS. HENCE ROADS WHICH CAN WITHSTAND THE EFFECTS OF WEATHER ALSO WITHSTAND VERY HEAVY TRAFFIC LOADING. LOADING FROM THE VEHICLE IS APPLIED AS CONTACT PRESSURE THROUGH THE TYRES, THE CONSTRUCTION AND ELASTICITY OF WHICH DETERMINE THE PAVEMENT LOADING. WHEELS HAVING DOUBLE TYRES PERMIT GREATER WHEEL LOADS AND MORE PASSES FOR THE SAME PAVEMENT LOADING THAN SINGLE-TYRED WHEELS. DOUBLE AND TREBLE AXLES WITH 1.2 TO 1.4 METRE AXLE SPACINGS PRODUCE AT THE SAME AXLE LOAD LESS STRESS ON THE CARRIAGEWAY THAN TWO OR THREE SINGLE AXLES. GROUPS OF AXLES NOT HAVING AXLE BALANCING EQUIPMENT ARE MORE PROTECTIVE TO CARRIAGEWAYS THAN THOSE WITH THIS FACILITY AND LOAD-INDEPENDENT SUSPENSION (AIR SUSPENSION) REDUCES DYNAMIC WHEEL LOADING. HORIZONTAL SHEAR STRESSES CAN BE SIGNIFICANTLY REDUCED BY AUTOMATICA LOAD-INDEPENDENT BRAKING-FORCE REGULATION, BY ANTI-JAMMING DEVICES, HYDRAULIC STARTING TRANSFORMERS AND THE DISTRIBUTION OF POWER ONTO SEVERAL AXLES. USING DOUBLE AND TREBLE AXLES WHICH CANNOT BE STEERED HIGH LATERAL FORCES DEVELOP ON BENDS. HENCE THE AXLE SPACING SHOULD BE KEPT AS SMALL AS POSSIBLE. IN ORDER TO CONSTRUCT VEHICLES WHICH WILL REDUCE WEAR ON ROADS, HEAVY UNITS ARE PREFERABLE. ONLY WITH THESE ARE THE NECESSARY ADDITIONAL COSTS OF PRODUCING THEM WITH ROAD WEAR REDUCING CHARACTERISTICS RECOVERED BY GREATER EFFICIENCY COMPARED WITH SMALL UNITS.

  • Corporate Authors:

    MAN, WERK MUENCHEN

    POSTFACH 50 06 20
    MUENCHEN,   DEUTSCHLAND BR  D-8000
  • Authors:
    • GOERGE, W

Language

  • German

Media Info

  • Pagination: 8P

Subject/Index Terms

Filing Info

  • Accession Number: 01293064
  • Record Type: Publication
  • Source Agency: Forschungsgesellschaft für Straßen- und Verkehrswesen (FGSV)
  • Files: ITRD
  • Created Date: Nov 21 2010 3:50AM