论文部分内容阅读
层间剪切、层间弯剪模型的刚度矩阵是三对角Jacobi矩阵 ,利用递归算法可进行结构解耦。根据模态反问题理论 ,可用精确计算或实测的一个模态 (一般为基本模态 )识别结构的层间刚度值。所识别的层间刚度综合反映了结构的弯曲、剪切及轴向变形的影响 ,考虑了各杆件及各楼层之间的动态耦合效应 ,包括了原结构动静态各种因素的影响 ,从而提高了动力反应的计算精度。通过工程实例给出了该方法的工程应用
The interlayer shear, the stiffness matrix of the interlayer bending shear model are tridiagonal Jacobi matrices, and the structure can be decoupled by means of recursive algorithm. According to the modal inverse problem theory, one of the modes (usually the basic mode) that is accurately calculated or measured can be used to identify the inter-story stiffness value of the structure. The identified interlayer stiffness comprehensively reflects the effect of bending, shearing and axial deformation of the structure, and takes into account the dynamic coupling effect between each member and each floor, including the dynamic and static factors of the original structure, so that Improve the dynamic response of the calculation accuracy. The engineering application of this method is given through the engineering examples