论文部分内容阅读
改革开放以来,我国公路建设有了较快发展,到2002年末全国通车里程已达到176.5万公里。一批高速公路已经建成。更多的高等级公路正在建设或准备建设中。在公路修筑中,压实机械是很重要的设备,无论路基、底基层、基层和面层都需要很好的压实,以达到一定的密实度,提高道路的承载能力,并防止沉陷、水分渗透等。随着交通运输量的迅速增大,公路建设的进一步发展,施工部门对压实机械提出了越来越高的要求。通常,压实工作占施工项目费用的2%,设备占工程造价的0.2%,而密实度每提高1%,基础承载能力就提高10%;若是沥青混凝土密实度每提高1%,承载能力和寿命可提高10～15%。压实工作的重要性显而易见。当前,不论是国内还是国外的压路机行业都处于一个发展的黄金时期。这
Since the reform and opening up, China’s highway construction has witnessed a rapid development. By the end of 2002, the national mileage reached 1,765,000 km. A number of highways have been built. More high-grade highways are under construction or are under construction. In road construction, compaction machinery is a very important equipment, regardless of subgrade, subbase, grassroots and surface layers need to be well compacted to achieve a certain degree of density, improve the carrying capacity of the road and prevent subsidence, moisture Penetration and so on. With the rapid increase of traffic volume and the further development of highway construction, the construction department has put forward higher and higher requirements on the compaction machinery. Compaction usually accounts for 2% of the cost of the construction project and the equipment accounts for 0.2% of the construction cost. For every 1% increase in compaction, the basic carrying capacity is increased by 10%; if the asphalt concrete density is increased by 1%, the carrying capacity and Life expectancy can be increased by 10 ~ 15%. The importance of compaction work is obvious. At present, both domestic and foreign roller machinery industry are in a golden period of development. This