一、简述我国公路桥梁建设从1955年开始,在中小跨径桥上采用了装配式钢筋混凝土梁板式构造。初期引用了苏联的设计图,至1964年交通部公路设计院完成了一套我国自己的标准图,其中 T 型梁的跨径为7.5～20米。这种设计的构件制造仍嫌复杂,吊装重量较大,组装主要靠电焊,用钢量较苏联的设计 First, a brief description of China’s road and bridge construction From 1955 onwards, small and medium-sized bridge in the use of assembled reinforced concrete beam plate structure. The initial reference to the design drawings of the Soviet Union, to 1964 Ministry of Communications Road Design Institute completed a set of our own standard maps, including T-beam span of 7.5 to 20 meters. This design is still complicated manufacturing components, lifting a larger weight, assembly mainly by welding, the amount of steel than the Soviet Union’s design