矩形钢管混凝土束风机塔筒风振特性研究  

Study on wind vibration characteristics of rectangular concrete filled steel tube bundle wind turbine tower

作　　者：高翔[1,2] 郭宏超 郭品彰[2] 梁刚 GAO Xiang;GUO Hongchao;GUO Pinzhang;LIANG Gang(State Key Laboratory of Eco-hydraulics in Northwest Arid Region,Xi’an University of Technology,Xi’an 710048,China;School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,陕西西安710048 [2]西安理工大学土木建筑工程学院,陕西西安710048

出　　处：《地震工程与工程振动》2024年第2期98-107,共10页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(51978571);陕西省重点研发计划项目(2022SF-199,2022SF-121);陕西省杰出青年基金项目(2021JC-41);陕西省自然科学基金项目(2020JQ-628);西安理工大学优硕种子基金项目(310-252082110);中国博士后科学基金项目(2022M712562)。

摘　　要：随着风电资源优势区开发逐渐饱和,风电开发的重心开始向风资源条件相对恶劣的低风速地区转移,分布式、大功率、高塔筒和长叶片已经成为风电行业发展趋势。基于此提出了一种新型的矩形钢管混凝土束风机塔筒,该塔筒由矩形钢管混凝土束拼接而成,具有强度高、刚度大和耗能能力强的优点。为研究该塔筒结构的风振响应特性,选用Kaimal脉动风速功率谱,采用谐波合成法模拟风荷载时程曲线,对其进行了动力时程分析,并计算了风振系数及等效静力风荷载。结果表明:该新型塔筒在额定风速下位移塔顶位移最大值为911.84 mm,对应的水平位移角为1/154,符合规范要求。塔筒各构件的强度较好,且具有较大的安全富余度。基于位移等效的阵风荷载因子法计算得到的风振系数值较低;在惯性风荷载法计算得到的等效静力风荷载作用下,结构位移、基底剪力与结构随机振动分析得到的基本一致。With the development of wind power resource advantageous areas gradually saturated,the focus of wind power development has shifts to low wind speed areas with relatively poor wind resource conditions.Distributed,high power,high tower and long blades have become the trend in the wind power industry.Based on the above,a new rectangular concrete filled steel tube bundle wind turbine tower is proposed.The tower is made of rectangular concrete filled steel tube bundles,which has the advantages of high strength,rigidity and energy consumption capacity.To study the wind vibration response characteristics of this tower structure,the Kaimal pulsating wind speed power spectrum was chosen and the wind load time curve was simulated using the harmonic synthesis method to carry out the dynamic time analysis.Wind vibration coefficients and equivalent static wind loads were calculated for the tower.The results show that the maximum displacement of the top of this new tower at rated wind speed is 911.84 mm,which corresponds to a horizontal displacement angle of 1/154 and meets the code requirements.The tower components are of good strength and have a large safety margin.The wind vibration coefficient obtained by the displacement-equivalent gust load factor method is lower.Under the equivalent static wind loads calculated by the inertial wind load method,the structural displacements and basal shear forces are basically the same as those obtained from the structural random vibration analysis.

关 键 词：风机塔筒 矩形钢管混凝土束 风振响应 动力时程分析 等效静力风荷载 

分 类 号：TU511.3[建筑科学—建筑技术科学] TU973.213