太阳能光伏支架风荷载体型系数研究

发布时间：2018-05-25 16:23

本文选题：太阳能光伏支架系统 + 风洞试验　；参考：《石家庄铁道大学》2015年硕士论文

【摘要】：太阳能光伏支架系统对风荷载比较敏感,其受到的风荷载成为设计中的主要控制荷载。现阶段对太阳能光伏支架系统风荷载的研究尚不够成熟,各国规范只是粗略的给出结构风荷载的取值范围,但这些规定远无法解决实际工程中太阳能光伏支架系统风荷载的问题。其风荷载特性与结构本身的倾斜角度、底部阻塞度以及风场紊流度等参数有关系,因此研究太阳能光伏支架系统的风荷载分布规律对该类结构的抗风研究意义重大。本文通过刚性模型测压风洞试验,研究了太阳能光伏支架系统风荷载分布的基本特点,分析太阳能光伏板的倾斜角度、离地高度、底部阻塞度以及来流紊流情况对结构风荷载的影响规律,同时,研究太阳能光伏板上面积折减风压系数的分布规律。对实际工程中类似结构抗风设计具有一定的参考价值。全文主要包括以下内容:(1)通过风洞试验对均匀流场下太阳能光伏支架风荷载进行研究,给出典型工况下结构的风压分布特点,并总结出结构风荷载受倾斜角度、风向角等参数的变化规律。(2)基于风洞试验结果,分析结构面积折减风压系数的分布情况,并对倾斜角度、风向角等参数的影响进行说明。(3)通过不同紊流度及底部阻塞度时太阳能光伏支架风压分布,给出阻塞度对体型系数的影响规律。
[Abstract]:Solar photovoltaic support system is sensitive to wind load and its wind load becomes the main control load in design. At present, the research on wind load of solar photovoltaic support system is not mature enough. However, these regulations can not solve the problem of wind load of solar photovoltaic support system in practical engineering. The wind load characteristics are related to the slope angle of the structure itself, the blocking degree at the bottom and the turbulence of the wind field. Therefore, it is of great significance to study the wind load distribution of the solar photovoltaic support system. In this paper, the basic characteristics of wind load distribution of solar photovoltaic support system are studied by rigid model pressure measurement wind tunnel test, and the tilt angle and height of solar photovoltaic panel are analyzed. At the same time, the distribution law of area reduction wind pressure coefficient on solar photovoltaic panels is studied. It has certain reference value for wind resistant design of similar structures in practical engineering. The main contents of this paper are as follows: (1) the wind load of solar photovoltaic support under uniform flow field is studied by wind tunnel test, and the wind pressure distribution characteristics of the structure under typical working conditions are given, and the inclined angle of wind load is summarized. Based on the results of wind tunnel test, the distribution of wind pressure coefficient of structural area reduction is analyzed, and the inclination angle is analyzed. The influence of wind direction angle and other parameters on the wind pressure distribution of solar photovoltaic scaffolds with different turbulence and blockage at the bottom is explained, and the influence law of blocking degree on shape coefficient is given.
【学位授予单位】：石家庄铁道大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TU18;TU312.1

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