摘要
目前陆上风电场风机基础主要采用圆形钢筋混凝土扩展式基础，在抗震设防烈度较高地区，基础设计控制工况多数为多遇地震工况。本文结合工程实例，对地震作用计算的主要参数α进行了探讨，合理选取上部结构的自振周期，可以较明显的降低地震作用影响，从而优化基础设计。
At present, the basic form of onshore wind turbine foundation is circular reinforced concrete foundation, in an area of high seismic intensity, the basic design control conditions are mostly frequent seismic conditions. In this paper, with an engineering example, the main parameter a for seismic calculations is discussed, reasonable selection of natural vibration period of the upper structure, can obviously reduce the impact of the earthquake, in order to optimize the basic design.
出处
《风力发电》
2015年第6期65-69,共5页
Wind Power
关键词
风电机组基础
反应谱
地震作用
自振周期
优化设计
wind turbine foundation
response spectrum
seismic action
natural vibration period
optimal design
