介绍江肇高速公路西江大桥主桥矮塔斜拉桥设计,包括工程概述、结构设计、主要技术特点和创新点等内容。该桥采用四塔五跨矮塔斜拉桥体系,设计中对矮塔斜桥整体布置、构造尺寸、斜拉索疲劳设计等做了初步的探讨;针对宽幅脊梁断面,利用空间梁格和三维有限元进行仿真分析,清晰认识索力传递规律和腹板受力不均匀性,在此基础上寻求矮塔斜拉桥合理受力状态。 This paper introduces the design of the short cable-stayed bridge of the main bridge of Xijiang Bridge in Jiangzhao Expressway, including the project overview, structural design, main technical features and innovations. The bridge adopts four towers and five spans and short pylon cable-stayed bridge system. In the design, the overall arrangement, structure size and fatigue design of the cable stayed bridge are discussed preliminarily. For the wide ridge section, Dimensional finite element simulation analysis, a clear understanding of the cable force transfer law and the uneven force on the web, on this basis to find a reasonable suspension dwarf cable-stayed bridge state.