何杰,高正荣,辛文杰,沙海明,朱方剑.港珠澳大桥东人工岛岛隧结合部沉管安放区导流堤掩护效果水动力精细模拟[J].海洋工程,2019,37(5):89~98
港珠澳大桥东人工岛岛隧结合部沉管安放区导流堤掩护效果水动力精细模拟
Hydrodynamic simulation of drainage effect of the diversion dike in the immersed tube area of east island-tunnel joint of Hong Kong-Zhuhai-Macao Bridge
  
DOI:10.16483/j.issn.1005-9865.2019.05.010
中文关键词:  港珠澳大桥  人工岛  岛隧结合部  掩护区  导流堤  沉管安装
英文关键词:Hong Kong-Zhuhai-Macao Bridge  artifical isand  island tunnel joint  shelter  diversion dike  immersed tube installation
基金项目:国家重点研发计划(2017YFC0405900)
作者单位E-mail
何杰 南京水利科学研究院 水文水资源与水利工程科学国家重点实验室江苏 南京 210029
港口航道泥沙工程交通行业重点实验室江苏 南京 210029 
jhe@nhri.cn 
高正荣 南京水利科学研究院 水文水资源与水利工程科学国家重点实验室江苏 南京 210029
港口航道泥沙工程交通行业重点实验室江苏 南京 210029 
 
辛文杰 南京水利科学研究院 水文水资源与水利工程科学国家重点实验室江苏 南京 210029
港口航道泥沙工程交通行业重点实验室江苏 南京 210029 
 
沙海明 南京水利科学研究院 水文水资源与水利工程科学国家重点实验室江苏 南京 210029  
朱方剑 台州市水利局 浙江 台州 318000  
摘要点击次数: 35
全文下载次数: 19
中文摘要:
      港珠澳大桥东人工岛所在海域受水下地形和近岸边界影响呈“涨潮NE向、落潮SW向”的往复流特点,东人工岛岛隧结合部沉管基槽水域在岛头挑流作用下涨潮流呈N向流动。根据岛隧结合部区域的水流运动特征,制订了基槽掩护区南北两侧“非对称”型的双导流堤掩护措施。建立基槽局部水域的三维水流数学模型,模拟岛隧结合部水流运动的三维特征,对导流堤实施后的掩护效果进行水动力仿真模拟。研究结果表明:基槽掩护区内流速大幅减弱,E33管节基槽的人工整平段最大流速在0.5 m/s以内,整平船施工段最大流速不超过0.8 m/s,E33管节各区流速均能满足沉管安装的水流条件。为安全起见,E33管节沉放安装时机适合选在潮流动力较弱的小潮期。
英文摘要:
      The waters of the east artificial island of the Hong Kong-Zhuhai-Macao Bridge are characterized by the reciprocating flow of “the high tide in NE direction and the ebb tide in SW direction” under the influence of underwater topography and near-shore boundary. The sinking base water area of the east island tunnel-joint is at the island head. Under the action of picking up, the flood tied flows in N direction. According to the characteristics of water flow movement in the joint area of the island tunnel, the "Asymmetric" type double-drainage protective measures for the north and south sides of the basement shelter area were formulated. The 3-D mathematical model of water flow in the water area of local sinking base was established, and the 3-D characteristics of the water flow movement in the joint area were simulated. The hydrodynamic simulation of the drainage effect of the diversion dike was carried out. The results show that the flow velocity in the protected area of the basement is greatly reduced. The maximum flow velocity of the artificial flattening section of the E33 pipe joint base is less than 0.5 m/s, and the maximum flow velocity of the flattening ship -construction section is not more than 0.8 m/s. The flow rate can satisfy the flow conditions of the immersed tube installation. For safety reasons, the small tide period with weaker tide flow is suitable for the placement of pipe E33.
查看全文  查看/发表评论  下载PDF阅读器
关闭
海洋工程  版权所有
地址: 南京虎踞关34号 邮编:210024 电话:025-85829332 E-mail: oe@nhri.cn
苏ICP备05007122号