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研究了密肋复合墙体的开洞位置和洞口尺寸对其抗侧刚度的影响,引入洞口折减系数,计算开洞密肋复合墙体抗侧刚度,同时建立不同洞口参数的墙体有限元模型,分析发现:洞口位置相对坐标与墙体抗侧刚度呈二次曲线关系,洞口越居中密肋复合墙体抗侧刚度折减越大;洞口大小与墙体抗侧刚度呈线性关系,洞口越大密肋复合墙体抗侧刚度越小.利用有限元分析结果建立了开洞密肋复合墙体抗侧刚度的统计计算公式.试验验证表明:两公式计算抗侧刚度值比试验值小16%,能够满足实际工程需要.
The effect of open hole position and hole size on lateral stiffness of multi-ribbed composite wall is studied. The reduction factor of hole is introduced to calculate the lateral stiffness of multi-ribbed composite wall. At the same time, the wall finite element Model, the analysis shows that: the relative coordinates of the hole location has a quadratic curve relationship with the lateral stiffness of the wall, the greater the reduction of the lateral rigidity of the multi-ribbed composite wall is; the size of the hole has a linear relationship with the lateral stiffness of the wall, The bigger the stiffness of the multi-ribbed composite wall is, the smaller the lateral stiffness of the multi-ribbed composite wall is.Finally, the statistical calculation formula of the lateral stiffness of the multi-ribbed composite wall with open hole is established by the finite element analysis.The experimental results show that the formulas 16%, to meet the needs of the actual project.