悬浮隧道锚索布置选型研究  

The Research on the Selection of Anchor Cable Layout for Submerged Floating Tunnels

作　　者：汪金铎 纪翀 李欣[1,2] 张显涛[1,2] WANG Jinduo;JI Chong;LI Xin;ZHANG Xiantao(State Kay Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Yazhou Bay Institute of Deepsea SCI-TECH,Shanghai Jiao Tong University,Sanya 572024,Hainan China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学三亚崖州湾深海科技研究院,三亚572024

出　　处：《海洋工程装备与技术》2024年第3期10-17,共8页Ocean Engineering Equipment and Technology

摘　　要：悬浮隧道是一种跨越深水域的新型交通结构。为确保悬浮隧道在波流荷载作用下的动态稳定性,需要合适的系泊系统。本文以锚索式悬浮隧道为研究对象,探讨不同锚索布置形式对悬浮隧道结构动力响应的影响。借助OrcaFlex软件建立有限元模型,计算了垂直和倾斜布置形式下的系泊系统刚度,探究了规则波和均匀流作用下隧道位移、加速度和锚索张力的变化规律。结果表明,倾角为45°安装角为45°的倾斜锚索布置形式能够有效抑制隧道管体在垂直和水平方向上的运动响应,保证结构稳定性的同时有效防止锚索疲劳损伤,并且适用于不同长度的悬浮隧道。Submerged floating tunnels(SFTs)are a new type of transportation structure used to cross deep water.To ensure the dynamic stability of SFTs under wave and current loading,an appropriate mooring system is required.This research focuses on submerged floating tunnels with anchor cables and investigates the impact of different anchor cable layouts on the dynamic response of SFTs.Utilizing OrcaFlex software,finite element models are established to analyze the stiffness of mooring systems under both vertical and inclined layouts.The variations in tunnel displacement,acceleration,and anchor cable tension under regular waves and uniform currents are examined.The results show that the inclined anchor cable layout with an inclination angle of 45°and an installation angle of 45°can effectively suppress the vertical and lateral motion response of the tunnel,ensuring structural stability and preventing anchor cable fatigue damage.Furthermore,this layout is applicable to SFTs of different lengths.

关 键 词：悬浮隧道 锚索布置 波流荷载 OrcaFlex 

分 类 号：U459.5[建筑科学—桥梁与隧道工程]