高层框架动力分析刚度矩阵的弯剪层模型

Bending-shearing Layer Model of Rigidity Matrix for Dynamic Analysis of High-rise Frame Structure

多层框架结构侧向变形主要为层间剪切变形,其刚度矩阵常采用层间剪切模型;高层框架结构,由于框架梁对框架柱约束作用相对较弱,其侧向变形常包含有层间剪切和弯曲两种成分,因此刚度矩阵可采用层间弯剪模型.本文根据高层框架结构变形特点,针对高层框架结构动力分析的刚度矩阵,提出了一种比较简单实用的弯剪层模型.

The lateral deformation of muhistory frame structure may mainly be shearing displacement between stories, and shearing model between stories may frequently be adopted in analysis of rigidity matrix. However, as a result of the fact that the restraint effect of the frame beam on the frame column may be relatively weak in high-rise frame structure, the lateral deformation regularly contains two different types such as shearing and bending displacement between stories： Consequently, bending-shearing model between stories may constantly be employed in dynamic analysis of high-rise frame structure. On the basis of the lateral deformation characteristic of the frame structure, a simple and practical bendingshearing layer model of rigidity matrix has been presented for dynamic analysis of high-rise frame structure.