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以CRTSⅡ型板式无砟轨道桥梁台后锚固体系(工程实践被称为端刺)为研究对象,以双柱型端刺和倒T型端刺为例,对台后锚固体系进行了研究。利用ANSYS有限元软件建立了锚固体系的纵横垂向空间耦合静力学分析模型,对其进行受力变形分析。模型中综合考虑桥梁与底座板、轨道板与底座板、底座板与台后锚固体系的相互作用关系,荷载形式以温度力、制动力为主。研究在相同受力下,过渡段换填前后的影响,以及在相同制动力和温度荷载条件下,双柱型端刺和倒T型端刺的受力性能,结果表明下部结构的刚度对上部结构的位移、应力有较大的影响,且随温度变化,从主端刺到小端刺,纵向位移逐渐减小,倒T型端刺抵抗纵向变形能力优于双柱型端刺。
The post-anchorage system of CRTS Ⅱ slab-track bridge (engineering practice is called end stab) was taken as the research object. The double-column stab and inverted T-stab were used as examples to study the anchoring system of the platform. The ANSYS finite element software was used to establish the coupled model of vertical and horizontal vertical space of the anchoring system, and its deformation analysis was carried out. The model takes into account the interaction between the bridge and the base plate, the rail plate and the base plate, the base plate and the backstage anchoring system. The load forms mainly include the temperature force and the braking force. Under the same force, the effect of the transitional section before and after replacement, and under the same braking force and temperature load, Structure displacement and stress have a greater impact, and with temperature changes from the main end to the small end spines, the longitudinal displacement decreases gradually, inverted T-shaped spine to resist longitudinal deformation better than the double-column spines.