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针对我国客运专线广泛应用的CRTS Ⅰ型板式无砟轨道结构,建立简支梁桥上计算模型。为研究凸型挡台细部受力特性,将轨道结构模拟为实体,分析了凸型挡台纵向受力特性。计算结果表明,凸型挡台纵向力从台顶往下逐渐减小,沿线路纵向变化明显。温度荷载对凸型挡台纵向力影响较大,应作为设计和检算的控制因素。
In view of the wide application of CRTS Ⅰ slab ballastless track structure in our country, the calculation model of simply supported girder bridge is established. In order to study the detailed force characteristics of the convex block, the orbital structure was simulated as a solid body, and the longitudinal force characteristics of the convex block were analyzed. The calculation results show that the longitudinal force of the convex block decreases gradually from the top to the top, and the longitudinal variation along the line is obvious. Temperature load on the convex block longitudinal force greater impact, should be used as the design and calculation of the control factor.