本文分析我国首座铁路弯梁桥的预应力施工特点,介绍所采用的对策、弯梁孔道摩阻现 场及室内对比试验、弯梁钢束伸长量计算方法及实测值与计算值的吻合情况,预应力施加对弯梁 内力和变形所产生的影响

The peper a naly zes the prest ressing fo rce co nst ructio n pro perties of the fi rst rai lw ay cantilever curved gi rder bridg e in china , and introduces tho se w ays to deal wi th i t , the cont rast experiment of the curved gi rder hole-f rictio n drag in field and indoo r, the steel-cable st retching amount calcula tion method and the comperion the field measured data to the ca lculation data, the effect the prestressing fo rce const ruction to the curv ed gi rder internal fo rce and displacement.