第二次世界大战结束以来,预应力钢筋混凝土结构经历了一个急速发展时期,主要可归因于当时建筑业的高度活跃,部分也由于费用结构发生了有利于从钢材转向预应力混凝土的变化。但在衬砌压力隧洞、井筒以及其它类型结构,则存在从混凝土转向钢的倾向。最近在意大利和瑞士建设的工程证明预应力混凝土结构完全可以替代传统的钢衬砌。 Pre-stressed RC structures have experienced a period of rapid development since the end of World War II, largely attributable to the highly active construction industry at that time and in part to the changes in cost structure that favored the shift from steel to prestressed concrete. However, in lining pressure tunnels, wellbores, and other types of structures, there is a tendency to steer steel from concrete. Recent construction projects in Italy and Switzerland have proved that prestressed concrete structures can completely replace traditional steel linings.