首页|深中通道岛隧结合部波流特性及覆盖层稳定性试验研究

深中通道岛隧结合部波流特性及覆盖层稳定性试验研究

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  • 国家科技期刊平台
  • NETL
  • NSTL
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基于岛隧工程结合部与传统隧道、近岸陆地工程衔接存在明显差别,以及在设计上面临的新难题,为保证深中通道岛隧结合部沉管隧道覆盖层在极端恶劣条件下的安全性和可靠性,对结合部区域范围内波流特性和防护结构的稳定性进行了研究.通过开展物理模型试验,模拟了包括波浪和水流之间变化角度的水动力场,以及波流耦合作用护面块体稳定性;揭示了岛隧结合部波流耦合效应,总结了波高比(Hs'/Hs)和流速比(U'/U)与相对流速(U/C)、波陡(Hs/L)、相对水深(d/L)和波流夹角(α)变化规律,并导出了相应的计算公式;同时通过多组试验对比优化,获得了护面块体最优稳定重量,导出了波流耦合作用下护面块体稳定重量的计算方法.研究结果不仅解决了深中通道重大工程的实际问题,也为今后海底沉管隧道覆盖层的建设提供基础数据和技术支撑.
Experimental study on wave current characteristics and cover layer stability at island tunnel junction of the Shenzhen-Zhongshan Channel Project
Based on the significant differences between the junction of island tunnel engineering and traditional tunnels and nearshore engineering,as well as the many new challenges faced in design,research was conducted to ensure the safety and reliability of the coverage layer of the immersed tube tunnel at the junction,as well as the wave current characteristics and stability of the protective structure within the region.Physical model experiments were conducted to simulate the hydrodynamic field,encompassing wave-flow angle variations and the stability of armor blocks under wave-current coupling.These experiments revealed the wave-current coupling effect at the island tunnel junction,yielding variation patterns of wave height ratio(H'/Hs)and flow velocity ratio(U'/U)relative to flow velocity(U/C),wave steepness(Hs/L),relative water depth(d/L),and wave-current angle(α).Corresponding calculation formulas were derived.Through comparative analysis and optimization of multiple experimental sets,the optimal stable weight of the armor blocks was determined,and a formula for calculating this stable weight under wave-current coupling was derived.This paper not only solves the practical problems of the major project of the deep-to-medium channel but also provides valuable basic data and technical support for the construction of the cover layer of submarine immersed tunnels in the future.

Shenzhen-Zhongshan Channel Projectcover layer at the junction of island and tunnelwave-current couplingstabilitymodel test

聂晓彤、刘军其、戈龙仔、陈汉宝、刘海源

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交通运输部天津水运工程科学研究所 港口水工建筑技术国家工程研究中心,天津 300456

中交一航局第一工程有限公司,天津 300456

深中通道工程 岛隧结合部覆盖层 波流耦合 稳定性 模型试验

国家自然科学基金项目国家重点研发计划项目中央级公益性科研院所科研创新基金项目中央级公益性科研院所科研创新基金项目

520390052022YFB3207400TKS20230102TKS20230106

2024

水道港口
交通部天津水运工程科学研究所

水道港口

CSTPCD
影响因子：0.348
ISSN：1005-8443
年,卷(期)：2024.45(4)