响水风电基础地震动参数选取及抗震性能分析  

Ground Motion Parameter Choice and Seismic Analysis of Xiangshui Wind Power Foundation

作　　者：曾迪[1] 

机构地区：[1]中国水利水电科学研究院,北京100048

出　　处：《灾害学》2010年第B10期176-180,共5页Journal of Catastrophology

基　　金：十一五"国家科技支撑计划课题"近海风电场选址及风电机组运行;维护技术开发"(2006BAA01A24):中国水利水电科学研究院专项"近海风电场基础设计方法

摘　　要：响水风电场位于江苏省响水沿海滩涂地区,是国内目前单体较大的风电项目。本风电场是Ⅳ类场地条件对抗震不利,因此有必要对基础抗震性能进行验算。首先选取不同地震动参数进行了对比计算,计算表明根据风电场场区地形地貌、区域地质条件确定的地震动参数,考虑土层特性后,地震作用放大较多。然后针对在多遇地震和基本烈度地震两种情况下,综合考虑波浪力、风荷载的联合作用,对风电基础进行抗震验算,计算表明多遇地震烈度时,可满足现行建筑结构抗震规范的要求。基本烈度地震时,结构的应力、内力及其墩台处位移均满足抗震要求,但泥面处位移超过限制要求,泥面位移控制是抗震设计的主要目标。Xiangshui wind power foundation located in the coastal region of Jiangsu Province is the current larger wind power projects.It is necessary to carry out seismic performance analyses because the Ⅳ site classification is unfavorable.First,different ground motion parameters are compared.Calculations show that seismic performance is enlarged when consideration of site area topography,regional geological conditions and the soil specificity.Then seismic check is carried out combined effects of wave force and wind load under frequently occurred earthquake and basic intensity earthquake.The structure can meet current standard requirements under frequently occurred earthquake.Stress,internal force and pier displacement can meet the seismic requirements under basic intensity earthquake,but soil surface displacement over the limit requirements.Soil surface displacement control is the main objective of seismic design.

关 键 词：响水风电基础 地震动参数 抗震性能分析 

分 类 号：P315.957[天文地球—地震学]