抗震设计条件下的风电机组载荷计算
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摘要
按照GB50011-2010建筑抗震设计规范的要求,对有抗震设计要求的风场所用的风电机组进行地震载荷计算。根据中国风场的地质条件,用GB2010规范生成设计目标反应谱,再利用三角级数法将之合成为地震动加速度时程,考虑双向水平地震作用并进行时域分析。结合工程实例,借助Bladed软件对项目所用风电机组进行地震载荷计算,对比设计载荷和地震载荷,结果表明,地震时风电机组载荷大幅增大,但没有超过风电机组设计极限载荷,项目所用风电机组安全可靠。
According to the requirement of GB50011-2010, the seismic load calculation was carried out for the wind turbines which request for anti-seismic design. Based on the special geological conditions of wind farms in China and the requirements of GB50011-2010, the aim design acceleration response spectrum was generated, and then transformed to seismic acceleration time history using trigonometric series method. The domain analysis was carried on considering the bi-directional seismic action. A project, and the software Bladed was used to simulate the seismic of wind turbines, the design and seismic load of wind turbines were compared finally. The results showed that the seismic load of wind turbines was increased, but didn' t exceed the limit of design load of wind turbines. therefore, the wind turbine in this project was safe and reliable.
According to the requirement of GB50011-2010, the seismic load calculation was carried out for the wind turbines which request for anti-seismic design. Based on the special geological conditions of wind farms in China and the requirements of GB50011-2010, the aim design acceleration response spectrum was generated, and then transformed to seismic acceleration time history using trigonometric series method. The domain analysis was carried on considering the bi-directional seismic action. A project, and the software Bladed was used to simulate the seismic of wind turbines, the design and seismic load of wind turbines were compared finally. The results showed that the seismic load of wind turbines was increased, but didn' t exceed the limit of design load of wind turbines. therefore, the wind turbine in this project was safe and reliable.
引文
[1]吴春艳,金鑫,何玉林等.风力发电机在地震-风力作用下的载荷计算[J].中国机械工程,2011,22(18):36-40.
[2]GB50011-2010建筑抗震设计规范[S].2010.
[3]薄俊晶,蒋欢军.Eurocode8与GB50011—2010关于抗震设防目标、场地和地震作用等的比较[J].结构工程师,2011,27(5):90-95.
[4]张翔.中国建筑抗震设计规范与欧洲规范Eurocode8关于抗震设计反应谱的比较[J].四川建筑科学研究,2012,38(2):183-186.
[5]Guideline for Certification of Wind Turbines,Germanischer Lloyd[S],Edition2003\2004.
[6]姬淑艳,李英民,刘立平等.考虑双向水平地震作用的结构设计问题研究[J].地震工程与工程振动,2006,26(5):68-72.
[7]史家平.地震动合成方法比较与研究[D].大连:大连理工大学,2008.
[8]Bladed theory manual[R].2011.
[2]GB50011-2010建筑抗震设计规范[S].2010.
[3]薄俊晶,蒋欢军.Eurocode8与GB50011—2010关于抗震设防目标、场地和地震作用等的比较[J].结构工程师,2011,27(5):90-95.
[4]张翔.中国建筑抗震设计规范与欧洲规范Eurocode8关于抗震设计反应谱的比较[J].四川建筑科学研究,2012,38(2):183-186.
[5]Guideline for Certification of Wind Turbines,Germanischer Lloyd[S],Edition2003\2004.
[6]姬淑艳,李英民,刘立平等.考虑双向水平地震作用的结构设计问题研究[J].地震工程与工程振动,2006,26(5):68-72.
[7]史家平.地震动合成方法比较与研究[D].大连:大连理工大学,2008.
[8]Bladed theory manual[R].2011.
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