三瓣型高耸钢塔风振特性分析

发布时间：2018-01-13 20:13

本文关键词：三瓣型高耸钢塔风振特性分析　出处：《中国矿业大学（北京）》2013年博士论文　论文类型：学位论文

【摘要】：三瓣高耸钢塔结构是异型结构，近年来这类结构逐渐增多，人们对其在风荷载作用下的表现依然缺乏系统了解，这已经成为非常值得关注的问题。论文针对这一问题展开研究，主要进行了如下工作：（1）以典型三瓣高耸钢塔结构——西太湖观光塔为基础，设计了风洞试验；通过风洞试验，测试并分析了三瓣型高耸钢塔结构顺风向和横风向抗风性能，探讨了该类型高塔的设计方法----三瓣型高耸钢塔结构横向风的等效风荷载法（2）基于风洞试验数据,确定了变截面三瓣型高耸钢塔结构的顺风向风振系数随迎风面宽度和高度变化的规律；并针对三瓣型高耸钢塔结构截面及质量分布的特点,给出了适合的体型系数；（3）通过计算分析，，获得了能用于实际工程的计算表格,可快速方便地进行三瓣型高耸钢塔结构顺风向静动力风荷载的计算，该表格可以为有关规范的制定提供参考借鉴
[Abstract]:Three-lobe tall steel tower structure is a kind of irregular structure. In recent years, this kind of structure is increasing gradually, people still lack systematic understanding of its performance under the action of wind load. This has become a matter of great concern. This paper focuses on this issue, mainly as follows: 1) based on the typical three-lobed steel tower structure, West Taihu Lake sightseeing tower, wind tunnel test is designed. Through the wind tunnel test, the downwind and cross-wind resistance of the steel tower structure with three lobes is tested and analyzed. The design method of this type of tower is discussed: the equivalent wind load method for the transverse wind of the steel tower structure with three flaps (2) based on the wind tunnel test data, the variation law of the downwind wind vibration coefficient with the upwind width and height of the three-lobed steel tower structure with variable cross-section is determined. According to the characteristics of the section and mass distribution of the three-petal tall steel tower, the suitable shape coefficient is given. Through the calculation and analysis, the calculation table can be obtained for practical engineering, which can be used quickly and conveniently to calculate the downwind static and dynamic wind load of the tall steel tower structure with three lobes. This form can be used for reference for the formulation of relevant norms.
【学位授予单位】：中国矿业大学（北京）
【学位级别】：博士
【学位授予年份】：2013
【分类号】：TU347;TU391;TU311.3

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