强风作用下群体民居围护结构破坏特征

Destructive characteristics of envelope structures for group residential buildings under strong wind

为了模拟强风对低矮民居围护结构的破坏,采用蒙特卡洛模拟方法,考虑了群体民居围护结构中不同构件之间的相互作用,各构件的物理属性以及不同风向下群体建筑表面风压系数的变化等影响因素,研究了群体民居在不同风向、不同风速强风作用下的损失程度,分析了建筑面积密度及建筑位置的变化对建筑损失程度和分布的影响.结果表明,强风风向垂直或者平行于屋脊时,建筑损失较小;建筑面积密度越大,屋面瓦及屋面板损失越轻,下游房屋门窗破坏越严重.

In order to simulate the strong wind destruction on the envelope structures of low-rise residential buildings,the Monte Carlo method was adopted,the interaction mechanism among various components within the envelope structures,the physical properties of each component and the variation of wind pressure coefficients on the surface of group residential buildings under different wind directions were taken into account,and the loss degree of group residential buildings under the influence of strong wind with different speeds and directions was simulated. In addition,the effect of variation in building density and building location on the loss degree and distribution of buildings was analyzed. The results show that the buildings will have fewer losses when the strong wind direction is vertical or parallel to the ridge. The higher the area density,the lighter the loss of roof tile and roof panel,and the damage of windows and doors of downstream buildings is more severe.