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海上测风塔整体耦合风荷载计算

李聪, 马兆荣, 刘晋超, 刘东华

李聪, 马兆荣, 刘晋超, 刘东华. 海上测风塔整体耦合风荷载计算[J]. 南方能源建设, 2015, 2(3): 86-90. DOI: 10.16516/j.gedi.issn2095-8676.2015.03.017
引用本文: 李聪, 马兆荣, 刘晋超, 刘东华. 海上测风塔整体耦合风荷载计算[J]. 南方能源建设, 2015, 2(3): 86-90. DOI: 10.16516/j.gedi.issn2095-8676.2015.03.017
Cong LI, Zhaorong MA, Jinchao LIU, Donghua LIU. Full-coupled Wind Load Calculation of Offshore Wind Measurement Mast[J]. SOUTHERN ENERGY CONSTRUCTION, 2015, 2(3): 86-90. DOI: 10.16516/j.gedi.issn2095-8676.2015.03.017
Citation: Cong LI, Zhaorong MA, Jinchao LIU, Donghua LIU. Full-coupled Wind Load Calculation of Offshore Wind Measurement Mast[J]. SOUTHERN ENERGY CONSTRUCTION, 2015, 2(3): 86-90. DOI: 10.16516/j.gedi.issn2095-8676.2015.03.017
李聪, 马兆荣, 刘晋超, 刘东华. 海上测风塔整体耦合风荷载计算[J]. 南方能源建设, 2015, 2(3): 86-90. CSTR: 32391.14.j.gedi.issn2095-8676.2015.03.017
引用本文: 李聪, 马兆荣, 刘晋超, 刘东华. 海上测风塔整体耦合风荷载计算[J]. 南方能源建设, 2015, 2(3): 86-90. CSTR: 32391.14.j.gedi.issn2095-8676.2015.03.017
Cong LI, Zhaorong MA, Jinchao LIU, Donghua LIU. Full-coupled Wind Load Calculation of Offshore Wind Measurement Mast[J]. SOUTHERN ENERGY CONSTRUCTION, 2015, 2(3): 86-90. CSTR: 32391.14.j.gedi.issn2095-8676.2015.03.017
Citation: Cong LI, Zhaorong MA, Jinchao LIU, Donghua LIU. Full-coupled Wind Load Calculation of Offshore Wind Measurement Mast[J]. SOUTHERN ENERGY CONSTRUCTION, 2015, 2(3): 86-90. CSTR: 32391.14.j.gedi.issn2095-8676.2015.03.017

海上测风塔整体耦合风荷载计算

详细信息
    作者简介:

    李聪(1988),男,广东汕头人,助理工程师,硕士,主要从事水工结构设计工作(e-mail)licong@gedi.com.cn。

  • 中图分类号: TK81

Full-coupled Wind Load Calculation of Offshore Wind Measurement MastEn

  • 摘要: 风荷载是海上测风塔受到的主要荷载之一,其设计取值与测风塔的安全性、经济性密切相关。测风塔风荷载通常根据《建筑结构荷载规范》建立单独上部模型进行分析。为了更加真实地模拟测风塔风荷载,采用了测风塔上、下部整体耦合模型,通过数值方法进行分析,并与通常采用的规范估算方法进行对比。针对风荷载与结构自振频率之间的相互影响关系,提出了迭代求解风振系数的方法。通过对比分析计算,发现数值计算得出的风荷载量值比相同输入条件下规范法计算的结果小6%~26%。
    Abstract: Wind load is one of the dominating loads for offshore wind measurement mast, whose applied amount relates closely to safety and economical efficiency. A traditional wind load model includes merely an isolated upper mast, and calculation is based on the standard of Load Code for the Design of Building Structures. To give a better simulation of wind load, a full-coupled model containing both the upper mast and lower foundation was built for numerical anslysis, then a comparison with code method was made. To deal with the close loop relationship between wind load and natural frequency, iteration was introduced to solve for wind vibration coefficient. Through comparison, it was found that with identical input, wind load calculated by mumerical method is 6%~26% smaller than those from code method.
  • 图  1   计算模型

    Figure  1.   Model for Calculation

    图  2   风荷载施加方向

    Figure  2.   Direction of Wind Load

    图  3   风振系数计算流程

    Figure  3.   Calculation of Wind Vibration Coefficient

    图  4   风振系数沿高度分布

    Figure  4.   Distribution of Wind Vibration Coefficient Along Height

    图  5   桩顶位移与水平荷载的关系

    Figure  5.   Relationship between Pile Head Displacement and Horizontal Load

    图  6   1阶周期迭代过程

    Figure  6.   Iteration for Natural Frequency

    图  7   1阶周期迭代收敛情况

    Figure  7.   Convergence of Natural Frequency Iteration

    表  1   1阶周期迭代参数

    Table  1   Parameters in Natural Frequency Iteration

    迭代步 一阶周期/s 输入风速/(m/s) 平均风振系数
    1 1.262 5 40.0 1.00
    2 1.379 7 56.9 2.02
    3 1.379 5 56.9 2.02
    下载: 导出CSV

    表  2   计算结果对比

    Table  2   Comparison of Calculation Result

    腿号 Fx/ kN Fy/ kN Fz / kN
    建规-1 231.78 93.68 2 245.74
    SACS-1 208.68 75.51 2 114.29
    相对误差 -10% -19% -6%
    建规-2 265.88 -113.37 -2 919.82
    SACS-2 232.16 -89.39 -2 458.41
    相对误差 -13% -21% -16%
    建规-3 0.00 374.41 -3 765.05
    SACS-3 -0.23 280.99 -2 803.66
    相对误差 -25% -26%
    下载: 导出CSV
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  • 期刊类型引用(2)

    1. 赵业彬,任建宇,乐丛欢. 风荷载对全潜式浮式风机拖航运动响应的影响. 南方能源建设. 2024(01): 176-184 . 本站查看
    2. 严新明,魏刚,张宇华,张亚飞. 浮式深远海测风大浮标系统设计与海试应用. 江苏科技大学学报(自然科学版). 2024(03): 9-15 . 百度学术

    其他类型引用(0)

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出版历程
  • 收稿日期:  2015-06-07
  • 刊出日期:  2020-08-30

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    Donghua LIU

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