随着我国经济建设重点的调整,西部大开发已拉开序幕。西部地区地域广阔,能源、矿产资源丰富,但基础设施不足,特别是公路网的落后制约着该地区的开发与建设。因此,构架西部高等级公路网是建设的重中之重。在进行高等级公路建设的时候,必须吸取东部沿海地区的经验,在设计、材料、 With the readjustment of the key points of China’s economic construction, the grand development of the western region has begun. The vast area of ​​the western region is rich in energy and mineral resources, but the lack of infrastructure, especially the backwardness of the road network, restricts the development and construction of the area. Therefore, the construction of high-grade highway network in the west is the most important construction. In high-grade highway construction, we must learn from the experience of the eastern coastal areas in the design, materials,