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近年来,美国Camcar/Textron工程公司研究试验了一种新结构栓接长钢轨。它的结构设计除钢轨接头是以特制的Camrail型螺检检结代替焊接外,其他部分与焊接钢轨无缝线路的规定基本相同。据称,经过实验室及线路上运营的初步试验证明此种栓结长钢轨铺用在既有线短的区段或小段线路比较经济,并有类似焊接钢轨无缝线路的作用。 Camrail型螺检栓结钢轨接头和栓结长钢轨的试验是从检结绝缘接头开始,逐渐扩大范围。其中包括绝缘接头;无缝线路的曲线有接头地段;检结线路上两条焊接的长钢轨;栓接乎旋钢梁桥上的伸缩接头;在行车速度79英里/小时的普通有接头直线地段栓结长钢轨(约半英里长)以及在5‰重车下坡的普通有接头直线地段检结长钢轨(约一英里长)等。
In recent years, the United States Camcar / Textron Engineering Company studied a new structure bolted long rail. Its structural design in addition to rail joints is a special Camrail-type spiral inspection instead of welding, and other parts of the welded rails with the provisions of the same seamless line. Allegedly, preliminary tests conducted in laboratories and on lines have demonstrated that this type of bolted long rail is more economical to deploy in short lines or short sections of existing lines and has the similar effect as a welded rail seamless line. Camrail Type Bolt Joints and Joints The long rail test begins with the check junction insulation and gradually expands the range. These include insulated joints; the seamless line curve has piers; the two welded long rails on the querying line; the telescopic joints bolted to the Spinning Steel Girder Bridge; the straight line with joints at a speed of 79 mph The long sections of railings (about half a mile long) and the long straight sections (about a mile) of straight sections with straight junctions downhill on a 5 ‰ heavy truck are among others.