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在综合我国预应力混凝土结构设计规范和无粘结预应力混凝土结构研究成果的基础上,考虑预应力钢筋的无粘结作用,提出了客运专线板式轨道轨道板的配筋设计检算方法;研究了预应力钢筋数量对轨道板裂缝宽度的影响,结果表明,对于设计速度较低或列车荷载较小的线路,轨道板的预应力钢筋可以适当减少。
Based on the research results of design code of prestressed concrete structure and unbonded prestressed concrete structure in our country and considering the non-bonding effect of prestressed steel bar, a method of calculating reinforcement design of slab track plate is proposed. The influence of the amount of prestressed steel bars on the crack width of the track slab is analyzed. The results show that the prestressed steel slab track slabs can be reduced properly for the low speed train or the train load.