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A platform for research: civil engineering, architecture and urbanism
Construction control method suitable for ballastless track laying on medium-span bridge
The invention discloses a construction control method suitable for ballastless track laying on a medium-span bridge. The construction control method comprises the following steps that a finite element model of the bridge is established; monitoring deformation data of the bridge in the pouring and tensioning process, and correcting the finite element model; the pre-camber of the ballastless track base plate at the design temperature is calculated; after the whole bridge is closed, CPIII measuring points are arranged on the bridge floor, pouring construction of the base plate is conducted, and the finite element model is corrected again; after construction of the full-bridge base plate is completed, the CPIII point of the beam surface is measured again for the first time; the whole roadbed slab of the whole bridge is divided into three sections; carrying out three times of pouring construction on the roadbed slab which is divided into three sections, and determining the optimal length; laying side spans on two sides, and carrying out sleeper elevation on a part of mid-spans; paving a mid-span residual sleeper elevation, and performing cast-in-place construction on a residual mid-span roadbed slab; and finely adjusting the steel rail elevation by using the steel rail fastener. The situation that the actual construction and design track elevation error is large, and consequently project acceptance is affected is avoided, construction process measures can be simplified, the construction cost is reduced, and the construction efficiency is improved.
本发明公开了一种适用于中等跨度桥上无砟轨道铺设的施工控制方法，包括以下步骤：建立桥梁的有限元模型；监测桥梁在浇筑和张拉过程的变形数据，对有限元模型进行修正；计算设计温度下无砟轨道底座板的预拱度；全桥合龙后，在桥面设置CPIII测点，进行底座板的浇筑施工，再次修正有限元模型；完成全桥底座板施工后，第一次复测梁面CPIII点；将全桥的道床板整体分为三段；对分成三段的道床板进行三次浇筑施工，并确定最优长度；铺设两侧边跨、部分中跨轨枕标高；铺设跨中剩余轨枕标高，现浇施工剩余中跨道床板；利用钢轨扣件精调钢轨高程。本发明避免实际施工与设计轨道标高误差较大而影响工程验收，能够简化施工过程措施、降低施工成本、提高施工效率。
Construction control method suitable for ballastless track laying on medium-span bridge
The invention discloses a construction control method suitable for ballastless track laying on a medium-span bridge. The construction control method comprises the following steps that a finite element model of the bridge is established; monitoring deformation data of the bridge in the pouring and tensioning process, and correcting the finite element model; the pre-camber of the ballastless track base plate at the design temperature is calculated; after the whole bridge is closed, CPIII measuring points are arranged on the bridge floor, pouring construction of the base plate is conducted, and the finite element model is corrected again; after construction of the full-bridge base plate is completed, the CPIII point of the beam surface is measured again for the first time; the whole roadbed slab of the whole bridge is divided into three sections; carrying out three times of pouring construction on the roadbed slab which is divided into three sections, and determining the optimal length; laying side spans on two sides, and carrying out sleeper elevation on a part of mid-spans; paving a mid-span residual sleeper elevation, and performing cast-in-place construction on a residual mid-span roadbed slab; and finely adjusting the steel rail elevation by using the steel rail fastener. The situation that the actual construction and design track elevation error is large, and consequently project acceptance is affected is avoided, construction process measures can be simplified, the construction cost is reduced, and the construction efficiency is improved.
本发明公开了一种适用于中等跨度桥上无砟轨道铺设的施工控制方法，包括以下步骤：建立桥梁的有限元模型；监测桥梁在浇筑和张拉过程的变形数据，对有限元模型进行修正；计算设计温度下无砟轨道底座板的预拱度；全桥合龙后，在桥面设置CPIII测点，进行底座板的浇筑施工，再次修正有限元模型；完成全桥底座板施工后，第一次复测梁面CPIII点；将全桥的道床板整体分为三段；对分成三段的道床板进行三次浇筑施工，并确定最优长度；铺设两侧边跨、部分中跨轨枕标高；铺设跨中剩余轨枕标高，现浇施工剩余中跨道床板；利用钢轨扣件精调钢轨高程。本发明避免实际施工与设计轨道标高误差较大而影响工程验收，能够简化施工过程措施、降低施工成本、提高施工效率。
Construction control method suitable for ballastless track laying on medium-span bridge
一种适用于中等跨度桥上无砟轨道铺设的施工控制方法
SU WEI (author) / WANG SHENGJIE (author) / LI YAN (author) / ZHUO YI (author) / MENG FANZENG (author) / SONG SHUFENG (author) / DI HAO (author) / ZHANG XIANGXU (author) / XUN JIALEI (author) / GAO FENG (author)
2024-08-13
Patent
Electronic Resource
Chinese
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