Usage of Energy Dissipation Technology in Tall Building Structure Abstract With the developing of tall building structure theory and the application of new material and new technology,the height of high-rise building is increasing and the body type is becoming more complicated,which make it hard to satisfy the seismic requirements with regular structure system only.As a method that can solve the seismic problems properly,the energy dissipation technology has been widely used in design of high-rise building.A brief introduction of energy dissipation echnology and the usage of it in tall building structures are given in this report. [Keyword]seismic design,energy dissipation technology,tall building structure 1 Introduction of energy dissipation technology The theoretical basis of energy dissipation system will be introduced through an example of single-degree of freedom system.The system is composed by a concentrated mass m in the top,a frame without mass to provide the stiffness and a viscous damper to dissipate the seismic energy.Assuming there is no axial deformation in the beams and the columns.The system is presented in Fig.1. 质量 无质量框架 粘滞阻尼器 FigI Single-degree of freedom system The differential equations of motion of this system under harmonic force is mw+c+k=sinwr The steady-state displacement response can be calculated as u(t)=u sin(wt-)=(u)R,sin(w-o) The displacement reaction coefficient can be described as2 Usage of Energy Dissipation Technology in Tall Building Structure 【Abstract】 With the developing of tall building structure theory and the application of new material and new technology, the height of high-rise building is increasing and the body type is becoming more complicated, which make it hard to satisfy the seismic requirements with regular structure system only. As a method that can solve the seismic problems properly, the energy dissipation technology has been widely used in design of high-rise building. A brief introduction of energy dissipation technology and the usage of it in tall building structures are given in this report. 【Keyword】seismic design, energy dissipation technology, tall building structure 1 Introduction of energy dissipation technology The theoretical basis of energy dissipation system will be introduced through an example of single-degree of freedom system. The system is composed by a concentrated mass m in the top, a frame without mass to provide the stiffness and a viscous damper to dissipate the seismic energy. Assuming there is no axial deformation in the beams and the columns. The system is presented in Fig.1. Fig.1 Single-degree of freedom system The differential equations of motion of this system under harmonic force is '' ' 0 mu cu ku P wt   sin The steady-state displacement response can be calculated as 0 0 ( ) sin( ) ( ) sin( ) st d u t u wt u R wt      The displacement reaction coefficient can be described as