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- In such case, the conventional approach of mean wind decomposition is no longer adequate for estimating the flutter critical wind speed of bridges under the skew wind. 对开口薄壁断面、双主肋断面的试验研究发现,对于具有这种类型主梁断面的桥梁,传统的法向风已不是最不利的工况,需要详细考虑各种风偏角下颤振临界风速,找出最小颤振临界风速,方可偏安全进行桥梁设计。
- The variation pattern between flutter critical wind speed of bridge with flat box deck and wind yaw angle is significantly affected by wind attack angle. 扁平箱形截面桥梁的颤振临界风速与风偏角的关系明显地受到风攻角的影响。
- However, in the case of non-zero attack angle, the flat box deck becomes bluff, the variation of its flutter critical wind speed is accordingly undulant as the wind yaw angle increases, and the lowest value will occur generally under skew wind. 而对于非0°风攻角的情况,扁平箱形断面的流线性变差,随着风偏角的增加其颤振临界风速呈起伏变化,最低值一般在斜风的情况下出现,此时,传统的平均风分解方法不再适用。
- The numerical analyses of examples show that the galloping critical wind speed of large spatial reticulated structures will be greatly effected if these factors are omitted. 通过算例结果分析表明,如果忽略来流攻角和侧向气动力,对大跨空间结构的驰振临界风速有较大的影响。
- critical wind speed for vehicle tumover 临界翻车风速
- Determination of End Restrain and Vibration Critical Wind Speed for Steel Tube Members of Typical Node Structure 典型节点构造钢管构件的杆端约束与起振临界风速的确定
- Analysis of critical wind speed for running trains on a schemed Yangtze River Bridge at Nanjing on Jing-Hu high speed railway line 京沪高速铁路南京长江斜拉桥方案行车临界风速分析
- Limit of End Restrain of Steel Tube Pile Joined with Inserted Plate and Flanges and Calculation of Critical Wind Speed for Vibration Starting 插板和法兰连接钢管杆端约束界定与起振临界风速计算
- Three stages wind speed control. 三段风速控制。
- The wind speed had to be just right. 风速必须得恰倒好处才行。
- In an average wind speed 2.0 m / sec. 年平均风速为2.;0米/秒。
- critical wind speed 临界风速
- The spring wind speeds the greening of the plants. 春风催绿。
- No leakage in the windows under wind speed of 60m/s or 216 km/hr. 风速每秒60米(时速216公里)之风力下,玻璃窗没有漏水。
- Incline the wind meter to find the maximum wind speed direction. 运用风速计去发现最大风速及风向。
- Close to the ground, wind speed increases quickly with height. 靠近地面,风速随高度迅速增大。
- DPi, DTi and WIi were dew period, dew temperature and wind speed. DPi,DTi,WIi分别代表露时、露温和风速。
- They can generate wind speeds faster than 250 mph. 龙卷风的风速可以超过时速二百五十英里。
- Surface roughness has a profound effect on wind speed. 地表粗糙度对风速有相当深刻的影响。
- Parameters Sensitivities Analysis of Flutter Critical Velocity of Flat Plates 平板颤振临界风速的参数灵敏度分析