地震和风浪荷载联合作用下海上风力机结构-单桩基础动力响应规律振动台试验研究

郭修新; 许成顺; 凌薇宇; 刘开源; 贾科敏

doi:10.19912/j.0254-0096.tynxb.2025-0338

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太阳能学报 ›› 2026, Vol. 47 ›› Issue (7) : 116-126. DOI: 10.19912/j.0254-0096.tynxb.2025-0338

地震和风浪荷载联合作用下海上风力机结构-单桩基础动力响应规律振动台试验研究

郭修新¹, 许成顺¹, 凌薇宇¹, 刘开源², 贾科敏³

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SHAKE TABLE EXPERIMENTAL STUDY ON DYNAMIC RESPONSE OF MONOPILE FOUNDATIONS FOR OFFSHORE WIND TURBINE STRUCTURES UNDER COMBINED EFFECTS OF EARTHQUAKE AND WAVE LOADS

Guo Xiuxin¹, Xu Chengshun¹, Ling Weiyu¹, Liu Kaiyuan², Jia Kemin³

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文章历史 +

摘要

为研究风浪及地震联合作用下海上风力机结构地震响应规律,本文开展了大型物理模型试验。结果表明：风浪长期循环荷载作用下,桩周1D范围内受桩-土相互作用效应显著,5D范围以外桩-土相互作用可忽略;在地震和风浪荷载联合作用下,浅层桩周土体加速度较仅受地震作用相比有放大趋势,风浪荷载作用可能沿埋深4D范围内产生影响;在地震和风浪荷载联合作用下,桩顶和塔顶的加速度、位移和弯矩明显大于仅受地震作用情况,且呈现结构整体倾斜。水平荷载与地震荷载联合作用下风力机结构单桩基础表现出的这种耦合效应对风力机的安全服役产生了显著影响,在风力机基础抗震设计中值得关注。

Abstract

Offshore wind turbine structures are continuously subjected to long-term wind and wave horizontal loads, as well as seismic forces during their service life. To explore the seismic response behavior of these structures under the combined effects of wind, wave, and seismic loads, a large-scale physical model test was conducted. The results indicate that under long-term cyclic loading from wind and waves, the pile-soil interaction effect is pronounced within a range of one pile diameter （1D） around the pile, while the interaction can be neglected beyond five pile diameters （5D）. Under the combined influence of seismic and wind-wave loads, the soil acceleration around the shallow piles is significantly amplified compared to when only seismic loads are applied. The effect of wind and wave loads may extend to a depth of up to four times the pile diameter. Additionally, under the joint action of seismic and wind-wave loads, the accelerations, displacements, and bending moments at the pile top and tower top are notably higher than those observed with seismic loads alone, with the structure exhibiting an overall tilt. The coupling effect observed in the wind turbine’s single-pile foundation under the combined horizontal and seismic loading has a considerable impact on the safety and serviceability of the turbine. This effect should be carefully considered in the seismic design of wind turbine foundations.

导出引用

郭修新, 许成顺, 凌薇宇, 刘开源, 贾科敏. 地震和风浪荷载联合作用下海上风力机结构-单桩基础动力响应规律振动台试验研究[J]. 太阳能学报. 2026, 47(7): 116-126 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0338

Guo Xiuxin, Xu Chengshun, Ling Weiyu, Liu Kaiyuan, Jia Kemin. SHAKE TABLE EXPERIMENTAL STUDY ON DYNAMIC RESPONSE OF MONOPILE FOUNDATIONS FOR OFFSHORE WIND TURBINE STRUCTURES UNDER COMBINED EFFECTS OF EARTHQUAKE AND WAVE LOADS[J]. Acta Energiae Solaris Sinica. 2026, 47(7): 116-126 https://doi.org/10.19912/j.0254-0096.tynxb.2025-0338

中图分类号： TU473.1

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