荷麻溪大桥主桥主要结构参数研究

Study of Primary Structural Parameters of the Main Bridge of Hemaxi Bridge

以江珠高速公路上的一座单索面部分斜拉桥——荷麻溪大桥主桥为例,通过调整其塔高和塔旁、跨中无索区长度等主要结构参数,研究各结构参数对主梁受力及位移的影响,并分析荷麻溪大桥主桥的合理塔高。

The author takes an extradosed cable-stayed bridge with single-cable-plane on Jiangmen- Zhuhai Expressway--main bridge of Hemaxi Bridge as example, studies the impact of primary struc- tural parameters on loading and displacement of the main girder, and analyses the reasonable height of the main tower of Hemaxi Bridge by adjusting primary structural parameters including height of tower, length of main girder without cables on the side of tower and midspan etc.