结合广州市内环路工程中山一路西段的施工实践，介绍新型叠合梁结构中钢箱梁内预应力体外索的应用。
Combining with the practical construction of western section in Zhongshan Yi Road of Guangzhou inner-ring express way , the author introduces the application of prestressed external cables of steel box beam in a new composite beam structure .
中山一路