最近,我国首座铁路弯梁桥——南昆铁路板其二号大桥胜利通过桥上铺轨和引桥架设。板其二号桥是南昆铁路四座科技攻关桥之一,于1995年4月16日正式开工。该桥主桥位于半径为450米的曲线和11‰地坡道上,为我国首座铁路曲线连续刚构桥,也是目前世界上用悬臂灌注法施工的同型 Recently, the first railway bridge in our country, the bridge of Nankun Railway, successfully passed the laying of bridges and the erection of bridges. Its second bridge is one of four scientific and technological bridges of Nanning-Kunming Railway. It was officially started on April 16, 1995. The main bridge of the bridge is located on a curve with a radius of 450 meters and a ramp of 11 ‰, which is the first continuous rigid frame bridge of the railway curve in our country and is also the same type constructed by cantilever perfusion method