Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of large-span cable-stayed bridge ballastless track
The invention relates to a construction method of a large-span cable-stayed bridge ballastless track, which comprises the following steps: before construction of a bridge floor track, monitoring temperature and linear change of a bridge floor so as to calculate the linear temperature pre-camber of the bridge floor; establishing a finite element model of the cable-stayed bridge, constructing ancillary facilities, monitoring the change of the bridge deck line shape before and after construction, and performing rigidity correction on the finite element model based on the change of the bridge deck line shape so as to calculate the construction pre-camber of the subsequent load at the construction stage; the cable force of the stay cable is adjusted, so that the bridge deck line shape is adjusted to a first target line shape; setting out a base plate, and constructing the base plate; laying a track plate to adjust the bridge deck line shape to a second target line shape; and concrete construction is conducted, steel rails are laid, and construction is completed. According to the construction method of the large-span cable-stayed bridge ballastless track, the preloading procedure is abandoned, the finite element model is corrected according to the actual construction condition, the procedure is simplified, it is guaranteed that the laying precision of the ballastless track reaches the standard, and the construction period is greatly shortened.
本申请涉及一种大跨度斜拉桥无砟轨道的施工方法，包括：桥面轨道施工前，监测温度与桥面的线形变化，以计算得到桥面线形的温度预拱度；建立斜拉桥的有限元模型，施工附属设施，监测施工前后桥面线形的变化，基于桥面线形的变化，对有限元模型进行刚度修正，以计算得到施工阶段后续荷载的施工预拱度；调整斜拉索索力，以将桥面线形调整至第一目标线形；进行底座板放样，对底座板进行施工；铺设轨道板，以将桥面线形调整至第二目标线形；进行混凝土施工，铺设钢轨，以完成施工。本发明提供一种大跨度斜拉桥无砟轨道的施工方法，舍弃预加载工序，根据实际施工情况修正有限元模型，简化工序，保证无砟轨道的铺设精度达标，大大节省工期。
Construction method of large-span cable-stayed bridge ballastless track
The invention relates to a construction method of a large-span cable-stayed bridge ballastless track, which comprises the following steps: before construction of a bridge floor track, monitoring temperature and linear change of a bridge floor so as to calculate the linear temperature pre-camber of the bridge floor; establishing a finite element model of the cable-stayed bridge, constructing ancillary facilities, monitoring the change of the bridge deck line shape before and after construction, and performing rigidity correction on the finite element model based on the change of the bridge deck line shape so as to calculate the construction pre-camber of the subsequent load at the construction stage; the cable force of the stay cable is adjusted, so that the bridge deck line shape is adjusted to a first target line shape; setting out a base plate, and constructing the base plate; laying a track plate to adjust the bridge deck line shape to a second target line shape; and concrete construction is conducted, steel rails are laid, and construction is completed. According to the construction method of the large-span cable-stayed bridge ballastless track, the preloading procedure is abandoned, the finite element model is corrected according to the actual construction condition, the procedure is simplified, it is guaranteed that the laying precision of the ballastless track reaches the standard, and the construction period is greatly shortened.
本申请涉及一种大跨度斜拉桥无砟轨道的施工方法，包括：桥面轨道施工前，监测温度与桥面的线形变化，以计算得到桥面线形的温度预拱度；建立斜拉桥的有限元模型，施工附属设施，监测施工前后桥面线形的变化，基于桥面线形的变化，对有限元模型进行刚度修正，以计算得到施工阶段后续荷载的施工预拱度；调整斜拉索索力，以将桥面线形调整至第一目标线形；进行底座板放样，对底座板进行施工；铺设轨道板，以将桥面线形调整至第二目标线形；进行混凝土施工，铺设钢轨，以完成施工。本发明提供一种大跨度斜拉桥无砟轨道的施工方法，舍弃预加载工序，根据实际施工情况修正有限元模型，简化工序，保证无砟轨道的铺设精度达标，大大节省工期。
Construction method of large-span cable-stayed bridge ballastless track
一种大跨度斜拉桥无砟轨道的施工方法
CHEN ZHONGYU (Autor:in) / DING RENSHENG (Autor:in) / LIU XIULING (Autor:in) / WANG WENYANG (Autor:in) / PENG XUMIN (Autor:in) / ZENG DELI (Autor:in) / WEI DONGSHENG (Autor:in) / WEI JIANFENG (Autor:in) / ZHAN SHIQI (Autor:in) / ZENG XINGWEI (Autor:in)
21.11.2023
Patent
Elektronische Ressource
Chinesisch
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