潮白河矮塔斜拉桥的合拢

Closure of Chaobaihe Cable-Stayed Bridge with Low Pylon

介绍了三塔单索面预应力混凝土矮塔斜拉桥———潮白河大桥的合拢方案。分析计算了各种温度效应对该桥合拢过程中的影响程度,并给出了温度对主梁线形影响的实际测量数据。最后针对温度影响对边、中跨合拢段施工分别采取了不同的措施。

The paper introduces the closure option of Chaobaihe Bridge which is a prestressed concrete cable-stayed bridge with low pylon,three pylons and single cable plane.It also analyzes and calculates the influence degree of various temperature effects in the closure course of the bridge.It also gives the actual measurement data of the influence of temperature on the linearity of the main girder.At last,different measures are used for the construction of closure sectors of side and middle spans to counter the temperature influence.