【摘要】 近年来风能发电技术发展迅速,风电塔结构作为支撑风机的主要结构,在服役期间会受到强风荷载与地震作用,因此对风电塔结构的振动控制问题已经引起广泛关注。提出一种用于风电塔结构的新型减振耗能装置——调谐液体颗粒阻尼(TL-PD),该装置主要结合调谐液体阻尼技术(TLD)与颗粒阻尼技术(PD)。首先阐述该TL-PD装置的设计构思。然后,为验证该装置的减振效果,制作一简易装置,将其安装于一个单层框架顶部,开展振动台试验。试验结果表明,在正弦波和Kobe地震波的激励下,TL-PD能够有效减小结构的动力响应,且具有经济、实用的特点。更多还原

【Abstract】 Wind energy industry has been growing rapidly in past few decades. Wind turbine towers, as turbine supporting structures, suffer strong winds and seismic loads in its service period. Therefore, various vibration control techniques have been studied for wind turbine towers. This paper proposes a new passive damper—the Tuned Liquid Particle Damper(TL-PD), for wind turbine tower vibration control. This new damper combines the features of the tuned liquid damper(TLD) and the particle damper(PD). The paper first presents a conceptual design of the TL-PD. A series of shaking table tests were conducted with the damper being installed on a single-degree-offreedom system. Test results show that this proposed TL-PD is capable to suppress dynamic responses of the main structure under both sinusoidal and the Kobe earthquake excitations.更多还原