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A platform for research: civil engineering, architecture and urbanism
Ballastless track structure suitable for large-span bridge and installation method
The invention belongs to the technical field of railway track bridge structures, and particularly provides a ballastless track structure suitable for a large-span bridge and an installation method. The ballastless track structure comprises a CA mortar bag arranged on the surface of the bridge, a prefabricated frame track plate is fixedly arranged on the CA mortar bag, a steel rail is installed onthe prefabricated frame track plate, the bridge surface is provided with lateral stop block limiting devices located on the two sides of the prefabricated frame track plate and bridge surface exposedsteel bars; a limiting groove used for pouring center limiting concrete is formed in the center of the prefabricated frame track plate, a pouring groove used for pouring the center limiting concrete is formed in the center of the CA mortar bag, the limiting groove is correspondingly communicated with the pouring groove, and exposed steel bars on the surface of the bridge penetrate through the limiting groove and extend into the pouring groove. The ballastless track structure can adapt to large deformation between the track plate and a large-span bridge surface, the second-stage dead load of the bridge is reduced, uneven temperature cracking of the ballastless track structure is avoided, and the safety and stability of a vehicle-track-bridge system are ensured.
本发明属于铁路轨道桥梁结构技术领域，具体提供了一种适用于大跨度桥梁的无砟轨道结构及安装方法，包括设于桥梁面上的CA砂浆袋，CA砂浆袋上固设有预制框架轨道板，预制框架轨道板上安装有钢轨，桥梁面上设有位于预制框架轨道板两侧的侧向挡块限位装置及桥梁表面外露钢筋；预制框架轨道板的中心设有用于浇筑中心限位混凝土的限位槽，CA砂浆袋的中心设有用于浇筑中心限位混凝土的灌注槽，限位槽与灌注槽对应连通，且桥梁表面外露钢筋贯穿限位槽并伸入灌注槽内。该能够适应轨道板与大跨度桥面之间的较大变形，降低桥梁二期恒载，避免无砟轨道结构温度不均匀开裂，确保车辆‑轨道‑桥梁系统的安全性和稳定性。
Ballastless track structure suitable for large-span bridge and installation method
The invention belongs to the technical field of railway track bridge structures, and particularly provides a ballastless track structure suitable for a large-span bridge and an installation method. The ballastless track structure comprises a CA mortar bag arranged on the surface of the bridge, a prefabricated frame track plate is fixedly arranged on the CA mortar bag, a steel rail is installed onthe prefabricated frame track plate, the bridge surface is provided with lateral stop block limiting devices located on the two sides of the prefabricated frame track plate and bridge surface exposedsteel bars; a limiting groove used for pouring center limiting concrete is formed in the center of the prefabricated frame track plate, a pouring groove used for pouring the center limiting concrete is formed in the center of the CA mortar bag, the limiting groove is correspondingly communicated with the pouring groove, and exposed steel bars on the surface of the bridge penetrate through the limiting groove and extend into the pouring groove. The ballastless track structure can adapt to large deformation between the track plate and a large-span bridge surface, the second-stage dead load of the bridge is reduced, uneven temperature cracking of the ballastless track structure is avoided, and the safety and stability of a vehicle-track-bridge system are ensured.
本发明属于铁路轨道桥梁结构技术领域，具体提供了一种适用于大跨度桥梁的无砟轨道结构及安装方法，包括设于桥梁面上的CA砂浆袋，CA砂浆袋上固设有预制框架轨道板，预制框架轨道板上安装有钢轨，桥梁面上设有位于预制框架轨道板两侧的侧向挡块限位装置及桥梁表面外露钢筋；预制框架轨道板的中心设有用于浇筑中心限位混凝土的限位槽，CA砂浆袋的中心设有用于浇筑中心限位混凝土的灌注槽，限位槽与灌注槽对应连通，且桥梁表面外露钢筋贯穿限位槽并伸入灌注槽内。该能够适应轨道板与大跨度桥面之间的较大变形，降低桥梁二期恒载，避免无砟轨道结构温度不均匀开裂，确保车辆‑轨道‑桥梁系统的安全性和稳定性。
Ballastless track structure suitable for large-span bridge and installation method
一种适用于大跨度桥梁的无砟轨道结构及安装方法
SUN LI (author) / QIN YONGPING (author) / ZHENG WENZHEN (author) / GAO CHONGHUA (author) / SONG WENXIANG (author) / WANG SENRONG (author) / YANG YANLI (author) / ZHU BIN (author) / ZHANG ZHENG (author) / ZHOU LEI (author)
2021-02-26
Patent
Electronic Resource
Chinese
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