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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. 對開口薄壁斷面、雙主肋斷面的試驗研究發現,對於具有這種類型主梁斷面的橋樑,傳統的法向風已不是最不利的工況,需要詳細考慮各種風偏角下顫振臨界風速,找出最小顫振臨界風速,方可偏安全進行橋樑設計。
- 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. 扁平箱形截面橋樑的顫振臨界風速與風偏角的關係明顯地受到風攻角的影響。
- 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. 而對於非0°風攻角的情況,扁平箱形斷面的流線性變差,隨著風偏角的增加其顫振臨界風速呈起伏變化,最低值一般在斜風的情況下出現,此時,傳統的平均風分解方法不再適用。
- 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. 通過算例結果分析表明,如果忽略來流攻角和側向氣動力,對大跨空間結構的馳振臨界風速有較大的影響。
- critical wind speed for vehicle tumover 臨界翻車風速
- Determination of End Restrain and Vibration Critical Wind Speed for Steel Tube Members of Typical Node Structure 典型節點構造鋼管構件的桿端約束與起振臨界風速的確定
- Analysis of critical wind speed for running trains on a schemed Yangtze River Bridge at Nanjing on Jing-Hu high speed railway line 京滬高速鐵路南京長江斜拉橋方案行車臨界風速分析
- Limit of End Restrain of Steel Tube Pile Joined with Inserted Plate and Flanges and Calculation of Critical Wind Speed for Vibration Starting 插板和法蘭連接鋼管桿端約束界定與起振臨界風速計算
- Three stages wind speed control. 三段風速控制。
- The wind speed had to be just right. 風速必須得恰倒好處才行。
- In an average wind speed 2.0 m / sec. 年平均風速為2.;0米/秒。
- critical wind speed 臨界風速
- The spring wind speeds the greening of the plants. 春風催綠。
- No leakage in the windows under wind speed of 60m/s or 216 km/hr. 風速每秒60米(時速216公里)之風力下,玻璃窗沒有漏水。
- Incline the wind meter to find the maximum wind speed direction. 運用風速計去發現最大風速及風向。
- Close to the ground, wind speed increases quickly with height. 靠近地面,風速隨高度迅速增大。
- DPi, DTi and WIi were dew period, dew temperature and wind speed. DPi,DTi,WIi分別代表露時、露溫和風速。
- They can generate wind speeds faster than 250 mph. 龍捲風的風速可以超過時速二百五十英里。
- Surface roughness has a profound effect on wind speed. 地表粗糙度對風速有相當深刻的影響。
- Parameters Sensitivities Analysis of Flutter Critical Velocity of Flat Plates 平板顫振臨界風速的參數靈敏度分析