目前,我国许多施工单位在新线铺轨或旧线换轨大修施工中,在钢轨接头遇到平交道口或明渠等建筑物时,采用焊接或在螺栓孔内插入月牙垫片挤严和锯轨等办法以使钢轨接头避开上述建筑物。而大多数单位常采用的是锯短轨的办法。这样,不但施工不便,造成浪费,而且会给线路养护工作带来一定困难。为解决 At present, many construction units in our country in the new line or old line rail overhaul construction, rail joints encountered in the level crossing or open channel and other buildings, the use of welding or bolt holes in the crescent washer crowded and saw rail Methods to avoid rail joints from the above buildings. Most units are often used saw short track approach. In this way, not only the construction inconvenience, resulting in waste, and will bring some difficulties to the line maintenance work. To solve