斜拉索主梁锚固合理构造设计

宜宾南溪(仙源)长江大桥是国家规划的长江干线新建过江通道重点项目.主桥采用五跨280 m+572 m+(72.5+63+53.5)m双塔双索面非对称混合梁斜拉桥.针对斜拉索在组合梁上的锚固,选用锚拉板结构.主要介绍锚拉板结构的合理构造、计算分析和关键施工要点等关键技术.

Reasonable Structure Design of Main Girder Anchorage of Stay Cable

The Nanxi (Xianyuan) Yangtze River Bridge in Yibin is a state-planned key project of the new crossing channel of the Yangtze River trunk line. The asymmetric hybrid girder cable-stayed bridge scheme is adopted for the main bridge with five span 280 m + 572 m + (72.5 + 63 + 53.5) m double tower and double cable plane. The anchor plate structure is selected for the anchorage of stay cables on composite beams. This paper mainly introduces the key technologies of anchor plate structure, including reasonable structure, calculation analysis and main construction points.