大跨径空间索面斜拉桥混凝土锚块参数求解及配筋设计

Parameter calculation of and reinforcement design for concrete anchor block in long span spatial cable plane cable-stayed bridges

以广西横钦郁江大桥为例,采用空间解析几何方法推导了适用于空间索面斜拉桥的混凝土锚块参数求解公式,结合数据处理软件可实现批量化求解,提高设计效率;采用三维实体有限元法计算分析了混凝土锚块的空间受力行为,并结合规范公式对锚块进行了配筋设计,避免运营阶段裂缝的产生。

This article takes the Hengqin Yujiang bridge in Guangxi as an example,and uses spatial analytical geometry method to derive the formula for calculating the parameters of concrete anchor blocks suitable for spatial cable plane cable-stayed bridges.Combined with data processing software,batch solving can be achieved and design efficiency can be improved.The three-dimensional solid finite element method was used to calculate and analyze the spatial stress behavior of concrete anchor blocks,and the reinforcement design of the anchor blocks was carried out in combination with standard formulas to avoid the occurrence of cracks during the operation stage.