至于路基路面结构、城市桥梁、隧道规划只作简单介绍。
It briefly introduces roadbed and road pavement stricture, bridge engineering and municipal-service tunnel.
水的作用会加剧路基路面结构的破坏，加快路面使用性能的恶化，缩短道路的使用寿命。
The function of water will exacerbate the destruction of pavement structure, speed up the deterioration of pavement performance and shorten the life of the road.
路基路面结构在运营中主要承受交通车辆的作用，它的实际工作状态与现行的静态力学计算体系有较大的差距。
Subgrade and pavement mainly bear the vehicle loads under the transport conditions. The actual working state of the subgrade and pavement has difference from the static mechanical calculation system.
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