沈国辉, 孙炳楠, 楼文娟. 屋盖结构背景响应等效风荷载的一种简化算法[J]. 工程力学, 2006, 23(S1): 163-168.
引用本文: 沈国辉, 孙炳楠, 楼文娟. 屋盖结构背景响应等效风荷载的一种简化算法[J]. 工程力学, 2006, 23(S1): 163-168.
SHEN Guo-hui, SUN Bing-nan, LOU Wen-juan. A SIMPLE METHOD TO CALCULATE THE EQUIVALENT STATIC WIND LOAD ON LOW-RISE BUILDINGS[J]. Engineering Mechanics, 2006, 23(S1): 163-168.
Citation: SHEN Guo-hui, SUN Bing-nan, LOU Wen-juan. A SIMPLE METHOD TO CALCULATE THE EQUIVALENT STATIC WIND LOAD ON LOW-RISE BUILDINGS[J]. Engineering Mechanics, 2006, 23(S1): 163-168.

屋盖结构背景响应等效风荷载的一种简化算法

A SIMPLE METHOD TO CALCULATE THE EQUIVALENT STATIC WIND LOAD ON LOW-RISE BUILDINGS

  • 摘要: 屋盖结构以非共振响应为主,因此适用于共振响应的阵风荷载因子法已不再适用,而LRC法由于具有计算繁琐、与响应位置和类型有关等不足而难于应用。提出以最大(小)升力为目标的荷载升力相关(LLC)法,分析其原理,并给出具体的计算步骤。当风压为全相关时,LLC法得到的等效风荷载即为屋面的脉动风压,因而LLC法将用于结构整体计算和围护结构计算的风荷载公式相统一。通过两个实例检验LLC法计算低层房屋屋盖结构等效风荷载时的合理性。

     

    Abstract: The wind-induced dynamic response of low-rise building is dominated by the non-resonant component. The gust loading factor method, fitted for resonant response dominating cases, is not suitable for low-rise buildings. And Load-Response-Correlation (LRC) method has difficulty in practical application due to some deficiencies such as sensitivity to the response positions and types. A Load-Lift-Correlation (LLC) method is proposed, which aims at the maximal or minimal lift force. The theory and the corresponding calculation steps are given. The equivalent static wind load calculated by LLC method is the dynamic wind load if the wind pressures are fully correlated. Therefore, the LLC method unifies the wind load equations for main structure design and shielding system design. Two examples are given to verify the rationality of LLC method in obtaining the equivalent static wind load on low-rise buildings.

     

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