Seismic Analysis of Large-scale Wind Power Structure in Coastal Areas

章子华; 楼志挺; 诸葛萍

doi:10.13409/j.cnki.jdpme.2017.03.005

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Seismic Analysis of Large-scale Wind Power Structure in Coastal Areas

更新时间：2025-12-11

- Seismic Analysis of Large-scale Wind Power Structure in Coastal Areas
- Vol. 37, Issue 3, Pages: 362-367(2017)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2017.03.005
  CLC： U352.11
- Published：2017
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[1]章子华,楼志挺,诸葛萍.沿海地区兆瓦级风电结构地震响应分析[J].防灾减灾工程学报,2017,37(03):362-367.

章子华, 楼志挺, 诸葛萍. Seismic Analysis of Large-scale Wind Power Structure in Coastal Areas[J]. 2017, 37(3): 362-367.
[1]章子华,楼志挺,诸葛萍.沿海地区兆瓦级风电结构地震响应分析[J].防灾减灾工程学报,2017,37(03):362-367. DOI： 10.13409/j.cnki.jdpme.2017.03.005.

章子华, 楼志挺, 诸葛萍. Seismic Analysis of Large-scale Wind Power Structure in Coastal Areas[J]. 2017, 37(3): 362-367. DOI： 10.13409/j.cnki.jdpme.2017.03.005.

摘要

风力发电结构在地震情况下易发生整体倾覆、塔筒弯折等破坏。若同时考虑风荷载作用

则结构破坏风险增加。采用APDL命令流建立某沿海风电场1.5 MW级风电结构的"叶轮-塔筒-桩基"一体化有限元模型。通过单桩刚度折减

计算不同液化情况下的风电结构自振特性及结构地震响应。采用实测地震波和基于自回归法模拟获得的风速时程

计算风电结构在地震荷载单独作用以及地震荷载和风荷载共同作用两种情况下的动力响应。结果表明

随着液化程度的加深

轮毂水平位移和最不利单桩内力逐渐增大

在中等液化情况下塔筒底部应力出现最大值。考虑风荷载后

轮毂水平位移、塔底应力和最不利单桩内力均有所增加

其中背风面塔底应力和最不利单桩内力增加最为明显。

Abstract

Wind power structures（WPS）are prone to overturn and buckling under seismic load.If wind load is applied simultaneously

the risk of structural failure increases.A 1.5MW WPS consisting of wind turbine

tower and pile foundation in coastal area of China is modelled by finite element method using APDL in ANSYS.Natural vibration characteristics and seismic responses of WPS are calculated under different liquefaction degrees of soil site through stiffness reduction of single pile.Observed seismic waves and wind speed history simulated by auto-regressive method are employed to calculate the structural dynamic responses.Results show that the horizontal displacement of wheel hub and the axial force of unfavorable piles increase with the degree of liquefaction.And the stress of the tower bottom reaches the maximum under medium liquefaction.Taking the wind load into account

the horizontal displacement of the hub

the tower bottom stress and the axial force of the most unfavorable piles significantly increase

especially for the stress of the tower bottom and the axial force of the most unfavorable pile at the leeward.

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references

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