简要介绍了两座大型斜拉桥（南京长江第二大桥南汊桥和润扬长江公路大桥北汊桥）索塔锚固区的节段足尺模型试验，研究了索塔锚固区的抗裂安全系数和极限承载力；同时，还对索塔锚固区预应力索的合理布置形式、索塔节段模型对索塔整体的仿真效果等进行了研究，对于斜拉桥索塔设计具有理论指导意义和实用价值。

Two model tests for pylon´s anchorage zone of two long-span cable-stayed bridges, the Second Nanjing Yangtze River Bridge and the Runyang Yangtze River Bridge, are expounded in this paper. Safety factors for cracking and ultimate strength are obtained. The optimal configuration of prestress tendons in anchorage zone, and the emulation effects of segment model test to integral pylon are investigated. The results can be a reference for the design of pylon of cable-stayed bridges.