沉管存储区内系泊安全波浪数值模拟分析  

Wave numerical simulation analysis of mooring safety in immersed tube storage area

作　　者：莫忠璇 郭琼 黄明汉[1,2,3] MO Zhong-xuan;GUO Qiong;HUANG Ming-han(CCCC Tianjin Port Engineering Institute Co.,Ltd.,Tianjin 300222,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;CCCC Key Hydrodynamic Laboratory for Coastal Engineering,Tianjin 300222,China;Tianjin Key Laboratory of Construction,Operation and Maintenance Technologies for Underwater Tunnels,Tianjin 300461,China;No.3 Engineering Co.,Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Dalian,Liaoning 116083,China)

机构地区：[1]中交天津港湾工程研究院有限公司,天津300222 [2]中交第一航务工程局有限公司,天津300461 [3]中国交建海岸工程水动力重点实验室,天津300222 [4]天津市水下隧道建设与运维技术企业重点实验室,天津300461 [5]中交一航局第三工程有限公司,辽宁大连116083

出　　处：《中国港湾建设》2021年第11期11-14,53,共5页China Harbour Engineering

摘　　要：大连湾海底隧道建设工程中,沉管预制完成后需在存储区系泊保存数周。在沉管存储过程中,需评估系泊存储区的波浪情况。结合波浪实测数据、大连湾波浪再分析的成果、工程区精细波浪数值模拟结果,确定了系泊存储区波浪较大的时间段。同时,结合相关的沉管系泊模型计算结果,确定了近海波浪超限值。其中大连湾的波浪再分析模型采用MIKE21SW模型,考虑了波浪传播时区域风场、海水浅化、波浪折射、波浪衍射等影响。工程区波浪模型采用MIKE21BW模型,评估了防波堤对存储区内波浪的影响情况。实测波浪包含了近海、存储区两个观测点,数据资料用于校核模型的计算结果。波浪模拟分析的结果表明沉管存储区在6—8月时,容易出现较大的超限值波浪,应结合波浪的预报采取相应的工程措施。In the construction of Dalian Bay subsea tunnel project,immersed tube need to be moored in the storage area for several weeks after prefabrication.During the storage of immersed tubes,the wave condition in the mooring storage area needs to be evaluated.Combined with the measured wave data,the results of wave reanalysis in Dalian Bay,and the results of high resolution wave numerical simulation in the project area,the time period of large waves in the mooring storage area was determined.At the same time,combined with the calculation results of immersed tube mooring models,the offshore wave overrun value was determined.The wave reanalysis model of Dalian Bay adopted MIKE21 SW model,which considered the effects of regional wind field,seawater shallowness,wave refraction and wave diffraction during wave propagation.The MIKE21 BW model was used to evaluate the influence of breakwater on the wave in the storage area.The measured waves include two observation points:offshore and storage area.The data were used to check the calculation results of the model.The results of wave simulation analysis show that the immersed pipe storage area is prone to large overlimit waves from June to August,and corresponding engineering measures should be taken in combination with wave prediction.

关 键 词：波浪再分析模拟 精细波浪数值模拟 沉管存储区 系泊安全评估 

分 类 号：U652.3[交通运输工程—港口、海岸及近海工程]