1969年在津浦下行线固镇大桥北端一孔跨度为12m的先张预应力混凝土梁上,首次试验采用橡胶支座,自那时以来,板式橡胶支座在运营线小跨度钢筋混凝土梁上已得到较为广泛的推广使用。到1984年底,我局已有17.6％的钢筋混凝土梁先后铺设了橡胶支座,共475 In 1969, at the northern end of the Guzhen Bridge in Jinpu Downline, a rubber pre-stressed concrete beam with a span of 12m was used for the first time. Since then, the rubber bearing plate has been applied to the small span reinforced concrete beam Get more extensive promotion use. By the end of 1984, 17.6% of the reinforced concrete beams of our bureau had successively laid rubber bearings for a total of 475