- CSCD核心中文核心科技核心
- RCCSE(A+)公路运输高质量期刊T1
- Ei CompendexScopusWJCI
- EBSCOPж(AJ)JST
收稿日期: 2016-05-19
修回日期: 2016-08-16
网络出版日期: 2016-09-20
Numerical Analysis of Characteristics of Water Resistance during Floating Transportation of Immersed Tunnel Segment and Flow Field of Segment Turning Area
Received date: 2016-05-19
Revised date: 2016-08-16
Online published: 2016-09-20
南昌红谷隧道沉管浮运过程存在2个关键的风险控制点，分别为浮运过南昌大桥及回旋区转体，在这2处水流流向及流速复杂，浮运施工风险非常高。为校核浮运方案的合理性，需对管段浮运过程中水流阻力性能进行分析，以保证浮运安全。基于Fluent和MIKE流体计算软件，通过数值模拟的方法对沉管管段在2个关键风险控制点中所受水流阻力进行分析。对于管段浮运过南昌大桥过程，得到了管段所受水流阻力大小及其变化情况； 对于回旋区转体过程，先对水阻力系数Cw进行率定使其适用于本工程，再通过数值模拟得到不同水文条件下的回旋区流场，两者结合得到管段所受水流阻力大小。以期为复杂边界条件下管段水流阻力计算提供一套方法，计算结果为隧道管段浮运方案的制定提供参考。
何志敏 , 李九福 , 刘惠康 , 张玉成 , 余小强 . 沉管隧道管段浮运中的水流阻力性能及其在回旋区转体的流速流场模拟分析[J]. 隧道建设, 2016 , 36(9) : 1023 -1029 . DOI: 10.3973/j.issn.1672-741X.2016.09.001
For segment floating transportation, Nanchang Bridge and segment turning area are the key points for Honggu Immersed Tunnel in Nanchang. The characteristics of water resistance during floating transportation of the segment are analyzed by Fluent and MIKE fluid dynamics software, so as to guarantee the safe floating transportation. The characteristics of water resistance when the segment passes through Nanchang Bridge are obtained. The characteristics of water resistance at segment turning area are obtained by analyzing water resistance coefficient Cw and the flow field under different hydrological conditions. The results can provide reference for water resistance calculation during floating transportation of immersed tunnel segment.
/
| 〈 |
|
〉 |