锚碇沉管系统平台沉放的水动力特性试验研究  

Experimental investigation of hydrodynamic characteristics of an immersed moored tunnel element

作　　者：杨璨[1] 王永学[1] 

机构地区：[1]大连理工大学海岸与近海工程国家重点实验室,辽宁大连116024

出　　处：《哈尔滨工程大学学报》2016年第1期30-35,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金资助项目(11272079);国家自然科学创新研究群体基金资助项目(51221961)

摘　　要：为了研究平台沉放条件下沉管管段的运动响应特性,开展了规则波作用下锚碇沉管沉放的模型试验。采用双目视觉非接触式运动姿态测量系统测管段模型的运动响应,分析了不同布缆方式以及不同特性锚碇缆作用下的管段运动幅值变化情况。结果表明:锚碇沉管的锚碇缆对沉管管段的运动起到了一定的约束作用,减小了管段的横荡和横摇运动位移;采用八字形和十字形的布缆方式对管段运动的约束效果较好,平行布缆方式下的管段运动幅值较大;在一定范围内,锚碇沉管的锚碇缆长度越小,对管段的约束效果越明显。An experiment was conducted on a tunnel element immersed under regular waves to investigate the motion response. Motion responses were measured using a contactless binocular visual motion posture measurement system. The change in motion amplitudes under different arrangements of mooring lines was analyzed. The results showed that the mooting lines reduced the motion of the immersed tunnel in the sway and roll directions. It was demonstrated that the arrangements of the mooting lines in the forms ＂八＂ and ＂十＂ were optimal for reducing the motion of the immersed tunnel, while parallel arrangements should be avoided. In some cases, as the length of the mooting lines was made shorter, the effect on the motion response of the immersed tunnel element became larger.

关 键 词：锚碇沉管 运动响应 布缆方式 吊缆张力 锚碇缆力 低频运动 

分 类 号：P751[交通运输工程—港口、海岸及近海工程]