Longer Heavier Vehicles provide an improvement in energy efficiency and environmental performance compared to traditional Heavy-Duty Vehicles. In Sweden, the maximum permissible vehicle gross weight has been increased from ∼64 to ∼74 tonnes without increasing the axle load limits. The consequence of this is investigated in this study. Response from two instrumented thin flexible pavements subjected to loading from three types of heavy vehicles (∼64, ∼68 and ∼74 tonnes) has been measured and the recordings were compared with numerical calculations based on 2D multilayer elastic calculations. Pavement damage contribution by the three vehicles was thereafter investigated. As long as the number of axles is increased to compensate for the increased vehicle loading and dual wheels are used, ∼74 tonnes vehicle are not more aggressive to the two thin pavement structures compared to the lighter vehicles with fewer axles but higher average axle loads and tyre pressure.

与传统的重型车辆相比，更长的重型车辆可提高能源效率和环境性能。在瑞典，最大允许车辆总重已从约64吨增加到约74吨，而没有增加车轴负载限制。在这项研究中调查了其后果。测量了两种仪表薄型柔性路面在三种类型的重型车辆（〜64，〜68和〜74吨）的载荷下的响应，并将记录与基于二维多层弹性计算的数值计算进行了比较。此后，调查了这三辆车对路面损坏的贡献。只要增加轴数以补偿增加的车辆负载并使用双轮，