一、目前的实践情况几十年以来,欧洲一些国家混凝土路面都修筑成7.5米至12米长的板并配设钢筋网。但自从六十年代初期以来,几乎所有的国家都采用4.5米至6.0米长的板,不配筋、也不设置伸缝。除在德国、奥地利和瑞士外,其它国家在大多数的高速公路和机场跑 I. CURRENT PRACTICE For decades, concrete pavements in some European countries have been built into plates of 7.5 meters to 12 meters in length and equipped with steel mesh. However, since the early 1960s, almost all countries have adopted plates 4.5 meters to 6.0 meters long, which are not reinforced and have no stretch. Except in Germany, Austria and Switzerland, other countries run on most highways and airports