考虑土-结构相互作用锥形管风电塔架地震响应分析
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摘要
以华能阜新风力发电塔架为例,首先基于集中质量模型和弹簧系数法建立土-结构相互作用(SSI)计算模型,分析叶片转动产生的轴力,采用塔架动力分析方法考虑塔架动力特性以及叶片与塔架的耦合,将其与机舱、叶片简化为集中质量附加塔架顶部,根据D.Alembrt原理建立锥形管风电塔架结构动力方程,建立考虑土-结构相互作用的锥形管风电塔架的有限元模型,将其与基础约束全部自由度条件锥形管风电塔架做对比分析,得出考虑土-结构相互作用的风电塔架地震作用的位移和加速度都得到很好的控制。
Huaneng Fuxin wind tower,for example,the first model based on lumped mass and spring coefficient method of soil-structure interaction(SSI) calculation model,the axial force generated by blade rotation,consider using dynamic analysis tower dynamic characteristic of the blade and the tower of coupling it with the cabin,leaves reduced to focus on the quality of an additional tower at the top,according to D.Alembrt theory tapered tube set up wind power tower structural dynamic equations,based on consideration of soil-structure interaction wind power tower tapered tube finite element model,based on its constraints and conditions of all the freedom to do tapered pipe wind tower compared and analyzed considering the soil-structure interaction of the wind tower seismic displacement and acceleration have been well controlled.
Huaneng Fuxin wind tower,for example,the first model based on lumped mass and spring coefficient method of soil-structure interaction(SSI) calculation model,the axial force generated by blade rotation,consider using dynamic analysis tower dynamic characteristic of the blade and the tower of coupling it with the cabin,leaves reduced to focus on the quality of an additional tower at the top,according to D.Alembrt theory tapered tube set up wind power tower structural dynamic equations,based on consideration of soil-structure interaction wind power tower tapered tube finite element model,based on its constraints and conditions of all the freedom to do tapered pipe wind tower compared and analyzed considering the soil-structure interaction of the wind tower seismic displacement and acceleration have been well controlled.
引文
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[2]李琪.结构及基础与地基相互作用的非线性分析[D].南昌:广西大学,2006.
[3]孙利民,张曼南,盘龙,等.桥梁桩土相互作用的集中质量模型及参数确定[J].同济大学学报,2002.
[4]王湘明,陈亮,邓英,等.海上风力发电机组塔架海波载荷的分析[J].沈阳工业大学学报,2008.
[5]GB50330—2002建筑边坡工程技术规范[S].北京:中国建筑工业出版社,2002.
[6]邹寺华.工程结构减震控制研究[D].成都:西南交通大学,2004.
[7]杨宏,邹立华,黄丽彬,等.土-结构相互作用对结构振动控制的影响研究[J].振动冲击,2009.
[8]王开顺,王有为.土与结构相互作用对地震荷载的影响[J].中困抗震防灾论文,1986.
[9]周福霖.工程结构减震控制[M].北京:地震出版社,1997.
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