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下击暴流下输电塔时变响应分析及等效静力风荷载分析方法探讨

open access: yesJianzhu Gangjiegou Jinzhan
下击暴流作为一种局部强对流天气,是导致输电塔发生破坏的主要原因之一。为研究输电塔在下击暴流作用下的相关参数对输电塔风振系数的影响和等效静力风荷载分布,首先建立输电塔有限元模型并进行动力特性分析:建立冲击射流风场模型获取平均风速时程,使用谐波合成法模拟脉动风速时程,叠加得到下击暴流总风速时程;采用频域方法分析结构阻尼比、峰值因子以及脉动风速谱类型等参数对输电塔风振系数的影响程度及规律。然后,介绍并利用三种不同等效静力风荷载计算方法分析输电塔在下击暴流作用下的等效静力风荷载分布 ...
刘怡辰, 钟永力, 李顺, 晏致涛
doaj  

[The association between biological aging markers and valvular heart diseases]. [PDF]

open access: yesZhejiang Da Xue Xue Bao Yi Xue Ban
Liu X   +5 more
europepmc   +1 more source

[Interpretation of the "International consensus on early rehabilitation and nutritional management for infants at high risk of neurological impairment"]. [PDF]

open access: yesZhongguo Dang Dai Er Ke Za Zhi
Wang J   +5 more
europepmc   +1 more source

[Association between indicators of arterial stiffness and all-cause mortality and cardiovascular deaths: A prospective cohort study]. [PDF]

open access: yesBeijing Da Xue Xue Bao Yi Xue Ban
Fan M   +12 more
europepmc   +1 more source

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