天然弯曲河道跨河建筑物跨度确定方法

Determination method of span of construction crossing natural curve river

研究天然弯道(不考虑潮流影响),以航道宽度作为弯道跨河建筑物的最小跨度,提出弯道跨河建筑物最小跨度的确定方法。结果表明,天然弯道跨河建筑物的最小跨度与船舶的航迹带宽度、风致漂移量、流致漂移量和建筑物墩部紊流范围密切相关。航迹带宽度、风致漂移量、流致漂移量和建筑物墩部紊流范围越大,弯道跨河建筑物的最小跨度也越大。从通航安全角度出发,提出天然弯道流致漂移量、建筑物墩部紊流范围和弯道跨河建筑物最小跨度的数学计算模型。

The determination method of the span of construction crossing curved river is researched. The research results show that the span of construction width, ship drift distance induced by flow, shi etc.The more are the above factors, the larger P is crossing natural curved river is closely related with ship track drift distance induced by wind, turbulent range of construction pier span of construction crossing curved river.And the mathematical modes of ship drift distance induced by transverse flow in curved channel, turbulent range of construction pier, the minimum span of construction crossing natural curved river are put forward.