桥梁是公路的重要组成部分,桥梁养护的好坏直接关系到公路交通行车的安全和畅通.随着我国四个现代化建设的发展,国民经济的迅速发展对交通运输提出了更高的要求,反映在公路运输上是交通量猛增,运输车辆的载重量加大,公路运输对公路桥梁的通过能力和承载能力的要求越来越高,而一些旧桥陈旧、老化、破损现象日趋严重,许多旧桥难以适应日 The bridge is an important part of the highway, and the quality of the bridge maintenance is directly related to the safety and smoothness of road traffic. With the development of the four modernizations in our country, the rapid development of the national economy places higher demands on transportation and reflects In highway transportation, the traffic volume increases sharply, the carrying capacity of transportation vehicles increases, and the requirements of highway transportation for the passing and carrying capacity of highway bridges are getting higher and higher. However, some old bridges are getting older, aging and damaged more and more, and many Old Bridge difficult to adapt to the day