某斜拉桥索塔锚固区节段模型试验研究

Sectional Model Test Study of Cable-to-Pylon Anchorage Zone of a Cable-stayed Bridge

通过梅州市广州大桥斜拉桥索塔锚固区的节段足尺模型试验,研究了塔身U形束的预应力施工工艺,进行了索塔模型在U形预应力束及斜拉索作用下的应力量测与分析,在此基础上对桥塔节段锚固区应力进行了分析,并提出构造及设计上的建议,为工程实际提供指导和参考。

By full-scale model test of the anchorage zone of the pylon of Guangzhou Bridge in Meizhou City,the prestressing technique for the U-shaped tendons was investigated,and the stress distribution in the model were measured and analyzedd.According to the results,the stress field in anchorage zone of bridge tower was analyzed.Some suggestions about constitutionand design were given to guide the construction.