太阳能定日镜结构基于频域的风振响应分析  

DELECTION ANALYSIS FOR REFLECTOR PLATE OF HELIOSTAT BASED ON THIN PLATE FLEXURE THEORY

作　　者：宫博[1] 李正农[1] 吴红华[1] 王莺歌[1] 王志峰[2] 

机构地区：[1]湖南大学建筑安全与节能教育部重点实验室,长沙410082 [2]中国科学院太阳能热利用及光伏系统重点实验室,北京100190

出　　处：《太阳能学报》2009年第6期759-763,共5页Acta Energiae Solaris Sinica

基　　金：国家高技术研究发展(863)计划(2003AA516022);国家自然科学基金(50778072)

摘　　要：以湖南大学所做的定日镜风洞试验为例,基于Davenport谱推导定日镜结构顺风向风振响应的理论公式;并且通过风洞试验数据,拟合脉动风压归一化自谱。通过分析计算,该文得到不同地貌和不同风速下的风振位移响应根方差;并且把拟合谱计算的响应结果同有限元Newmark逐步积分法计算的结果进行比较分析,认为定日镜简化模型的频域计算能够较为精确地描述结构的风振位移响应。该文所得结果为定日镜结构的抗风设计提供了参考依据。The heliostat of solar tower power generation station locates at open terrain or suburban terrain, with high accu- racy requirements during working, but it is sensitive to gust. The heliostat is far away the solar energy receiver and the deflection for reflector plate under strong wind load makes reflected light deviate receiver. Up to now, the design of he- liostat has not involved with the deflection analysis for reflector plate. Taking a heliostat as example, the thin plate flex- ure theory was used to study regularity of load-deflection curve for reflector plate. Otherwise, the thin plate flexure theory was compared with finite element analysis. And it is economic and reliable that the large-deflection thin plate flexure theory could be adopted for deflection for reflector plate of heliostat.

关 键 词：定日镜 脉动风压谱 风振响应 

分 类 号：TK512[动力工程及工程热物理—热能工程]