摘要
南昌市昌南大道跨京九线高架桥为(90+132+90)m的三跨预应力混凝土连续梁桥,采用悬臂浇筑法施工。施工过程中,为更好地进行线形控制,结合该高架桥的施工,着重阐述了挠度控制的重要因素,并提出了设置预拱度以及进行线形控制的有效措施。同时针对温度等线形影响因素进行监测,确保合龙精度满足规范要求。
The viaduct crossing over Beijing-Kowloon Railway on Changnan Avenue is a pre-stressed concrete continuous girder bridge with span arrangement(90+132+90)-m,which is constructed by cast-in-place cantilever method.In order to control the alignment better in cantilever casting,some important factors on deflection control are mainly discussed in this paper,and the camber placing as well as the effective alignment control measures are also put forward.In addition the alignment influence factors such as the temperature effect are monitored to insure the closure's accuracy.
出处
《铁道标准设计》
北大核心
2012年第10期58-61,共4页
Railway Standard Design
关键词
预应力混凝土
连续梁
悬臂浇筑法
线形控制
温度监测
pre-stressed concrete
continuous girder
cantilever casting method
alignment control
temperature monitoring
