东南大学学报（自然科学版）2025，Vol.55Issue(3)：716-725,10.DOI:10.3969/j.issn.1001-0505.2025.03.011
风-震耦合作用下钢-预应力混凝土混合塔筒动力响应特征与结构优化
Dynamic response characteristics and structural optimization of steel-prestressed concrete hybrid tower under wind-earthquake coupling
摘要
Abstract
To explore the response characteristics of wind power tower structure under various loads,a 4.55 MW steel-prestressed concrete hybrid tower in service was selected.The downwind and lateral disturbed fluc-tuating wind loads were generated based on Davenport spectrum meanwhile typical earthquake vibration was considered.Using Abaqus software,the dynamic response characteristics of the wind turbine tower under dif-ferent working conditions were analyzed,the weak region of the tower was identified and then optimized by in-corporating ultra-high performance concrete(UHPC).Results show that the tower exhibits evenly distributed displacement along the height under fluctuating wind load with the maximum displacement drift angle of 1/635.The TD2 to C1 variable cross-section is recognized as the weak zone of the tower,where the accelera-tion and displacement increase sharply and cause the tower failure under earthquake and wind-earthquake cou-pling loading.Under combination loading of wind and earthquake,the tower top displacement is 1.47 to 1.74 times that under single earthquake.When lateral turbulence is considered,the tower top displacement in-creases by 55.8%to 86.9%.Optimizing the tower weak section with UHPC can effectively improve the over-all mechanical performance,avoiding or delaying the local failure of the weak zone which causes a collapse of the tower.关键词
风力发电塔/钢-预应力混凝土塔筒/脉动风荷载/风-地震耦合/动力响应Key words
wind turbine tower/steel-prestressed concrete tower/fluctuating wind load/wind-earthquake coupling/dynamic response分类
信息技术与安全科学引用本文复制引用
邢国华,任泽鹏,苗鹏勇,葛一鸣,黄娇..风-震耦合作用下钢-预应力混凝土混合塔筒动力响应特征与结构优化[J].东南大学学报（自然科学版）,2025,55(3):716-725,10.基金项目
陕西省自然科学基础研究计划联合基金资助项目(2022JC-LHJJ-06) （2022JC-LHJJ-06）
中央高校基本科研业务费专项资金资助项目(300102284301) （300102284301）
西安热工研究院有限公司外委资助项目(TPRI/TP-CA-181-2023A/H1). （TPRI/TP-CA-181-2023A/H1）
