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国际铁路联盟试验研究所(ORE)最近调查了所铺设试验的八处新型无碴混凝土板式轨道,并发表了铺设试验小结,其主要内容如下: 一、调查情况 1.1969年在拉德克利夫-特兰提1号桥上(Radcliffe-on-Tnent)铺设的无碴混凝土板式轨道,七年来已通过运量2,000万吨(包括一部分25吨轴重的货车),线向和水平仍保持在最初铺设时的公差范围内,仅有一些扣件(LTE型)螺栓曾出现松动。试验结果满。 2.1972年在达非尔(Duffield)土质路基上就地灌注的连续式预应力混凝土板式轨道,已通过运量6,000万吨,虽然轨道几何尺寸变化不大,一般皆在允许范围之内,但混凝土板的下沉超过了25毫米的规定,并有不均匀下沉。混凝土板也曾出现横向裂缝(温差引起)而
The International Union of Railroad Experimental Institute (ORE) recently surveyed eight new ballastless concrete slab tracks laid out and laid out a summary of the laying test, the main contents are as follows: First, the survey 1. In 1969 in Radcliffe - Special Ballastless concrete slab track laid on the Radcliffe-on-Tnent Bridge has passed 20 million tons (including some 25 tons of axle load) in seven years and the line direction and level remain at the initial laying Within the tolerance range, only some fasteners (LTE type) bolts have been loose. Test results are full. 2. In 1972, continuous in situ perfusion of prestressed concrete slab track on Duffield soil subgrade has passed 60 million tons. Although the geometric dimensions of the track have not changed much and are generally within the allowable range, concrete Plate sinking exceeds the 25-mm rule and unevenly sinks. Concrete slab also has horizontal cracks (caused by temperature difference)