摘要
风能作为一种清洁能源,具有显著的社会和环境效益。近年来世界风电装机容量平均以27%的速度增长,滩涂和近海的风力资源开发则更具潜力。风机基础是风机结构的关键部分,其主要计算内容包括:荷载组合值、地基承载力、稳定性、地基变形及基础受冲切、抗剪切等。当采用桩基础时,尚应复核桩身强度,桩基方案应结合承台及单桩承载力综合确定。由于风力发电机组对倾斜敏感,基础变形往往成为控制指标。在风机塔筒与基础的联接设计、地基基础长期变形发展规律、抗震抗风设计等方面还需做进一步专门研究。此文所研究的成果可供类似沿海地区风机基础设计参考。
As a type of clean energy, wind energy has remarkable social and environmental benefits. Recently, world installed capacity of wind power has increased by 27% every year in average, and the wind power off the coast has better exploitable potential. Wind turbine foundation is a key part of the wind turbine structure, its calculation matters contains load combination, foundation bearing capacity, stability, deformation, punching resistance, sheafing resistance etc. When pile foundation is adopted, pile body strength should also be checked, and pile arrangement should take the beating capacity of foundation cap and single pile into account. Because of the wind turbine＇s high inclination sensitivity, deformation of the foundation will likely be the control target in all calculation matters. Further more, a lot of problems need in-depth study, such as joint design between tower and foundation, accumulated deformation of foundation, seismic and strong wind-resistant design. Taking a wind farm off the coast as example, this arcticle provides some borrowings to other wind power farms,especially those locate on coastland.
出处
《工程建设与设计》
2009年第11期102-106,共5页
Construction & Design for Engineering
基金
国家自然科学基金项目(50509021)
神华科技创新项目资助。(SHJT-06-04)
关键词
风力发电
风机
桩基础
优化设计
wind power
wind turbine
pile foundation
optimumdesign
