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实用新型
CN202107952U 一种无砟轨道后张预应力轨道板 失效 - 权利终止

一种无砟轨道后张预应力轨道板
摘要：
本实用新型公开了一种无砟轨道后张预应力轨道板，属于无砟轨道的轨道板技术领域，包括轨道板板体，轨道板板体纵向端部设有凹槽，所述板体两端的凹槽关于板体的横向中心线对称设置，所述板体内设有后张纵向预应力钢筋，所述后张纵向预应力钢筋外表面设有包裹层，所述后张纵向预应力钢筋的端部锚固于板体端部，所述后张纵向预应力钢筋相对于板体纵向中心线对称设置；由于该板在使用时板下将填充自密实混凝土，使板的结构受力体系发生了本质变化，本实用新型与原来的轨道板比较取消了横向后张预应力钢筋，节省了原材料，简化了制作的工序，同时也降低了轨道板成本；更重要的是改善了轨道板的刚度，增加了轨道板的纵向延展性和抗裂性。
摘要（英）：

The utility model discloses a post tensioned prestressed track slab of a ballastless track, which belongs to a technical field of a track slab of a ballastless track and includes a track slab body; grooves are provided on longitudinal end parts of the track slab body; the grooves on two ends of the slab body are symmetrically arranged with respect to a transverse center line of the slab body; longitudinal post tensioned prestressed steel bars are provided in the slab body; a coating layer is provide on an outer surface of the longitudinal post tensioned prestressed steel bar; the end parts of the longitudinal post tensioned prestressed steel bar are anchored on the end parts of the slab body; and the longitudinal post tensioned prestressed steel bars are symmetrically disposed with respect to a longitudinal center line of the slab body. A structural load-carrying system of the slab is substantially changed as a self-compaction concrete is filled under the slab when the slab is in use. According to the utility model, a transverse post tensioned prestressed steel bar in the conventional track slab is eliminated, thereby saving raw material, simplifying manufacturing procedure and reducing track slab cost; and more importantly, rigidity of the track slab is enhanced and longitudinal ductility and crack resistance of the track slab are reinforced.

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