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与采用中间只有单一主跨跨过的双塔悬索桥相比,多塔悬索桥可以大大减小主跨跨径,显著减小主缆拉力及锚碇规模,其综合造价随之降低,因而成为特大跨径桥梁的一种具有竞争力的桥型方案。文中首先回顾了国内外多塔悬索桥的发展历史及现状,其次综述了多塔悬索桥的研究进展,最后展望了多塔悬索桥研究的努力方向。
Compared with the two-tower suspension bridge with only single main span in the middle, the multi-tower suspension bridge can greatly reduce the span of the main span, significantly reduce the main cable tension and anchorage size, and reduce the overall cost, thus becoming a large span A bridge with a competitive bridge program. The paper first reviews the history and current status of the multistation suspension bridges at home and abroad, then summarizes the research progress of the multistage suspension bridges, and finally looks forward to the direction of the research on the multistation suspension bridges.