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中国２１世纪的跨海工程将面临软土地基、强台风、深水基础等条件，仅用悬索桥和斜拉桥作为大跨桥型，已不能满足工程需求。作者建议采用斜拉－悬吊协作体系以及多跨索支承组合体系来取长补短，弥补体系之不足。本文以伶仃洋大桥工程为背景，探索了１４００ｍ伶仃东航道斜拉－悬吊协作体系的设计，为这种桥型的设计和跨世纪、跨海大桥方案研究提供参考依据。
China’s 21st-century cross-sea project will face such conditions as soft foundation, strong typhoon and deep-water foundation. Only suspension bridges and cable-stayed bridges are used as long-span bridges and can no longer meet the needs of the project. The authors propose to use the cable-stayed suspension system and the multi-span cable system to make up for each other’s deficiencies and make up for the deficiency of the system. Based on the Lingdingyang Bridge project, this paper explores the design of the cable-stayed suspension coordination system for the 1400m Lingding East Waterway, which provides a reference for the design of this bridge type and the study of the scheme of trans-century and sea-crossing bridges.