变截面框架-剪力墙-薄壁筒斜交结构的弯扭耦连振动计算

本文用沿高度方向分段连续化的方法,对沿高度方向为阶形变截面、在平面内为任意斜向布置的框架-剪力墙-薄壁筒协同工作体系,求得了其弯扭耦连振动时的微分方程。通过解耦措施将动力方程分解,得出计算频率和振型的计算公式,用计算器和微机即可求解。

Vibration for Coupled Flexure and Torsion of Stepped Tall Building Composed of Frame-Shear Wall and Thin Walled Tube Coupling System

In this paper, the differential equations of horizontal vibration for the flexure and torsion of a stepped tall building composed of frame-shear wall and thin walled tube coupling system have been derived by use of the continuum technique for the two adjacent parts in vertical direction. Then by using the generalized coordinate method and through transformation of coordinates, the differential equations are decoupled and formulas for calculating vibration frequencies and vibration modes are established.The analysis work of the suggested method can be worked out either by calculator or by microcomputer.