Analysis For Suspension System Damping Shock Effect

Suspended building is a product of modern economic development and scientific andtechnological progress, the suspension structure is one of the important means of damping. Since1938,Williams proposed using high-rise structure suspension building ideas, and planing to use the megaframe suspended floors, and many scholars have carried on the theoretical and experimental studies,and it is widely used in building and bridge engineering.Suspension structure of mechanical properties and structural height, number of suspended floors,boom radius, bearing column section on the floors of damping coefficient of flexural rigidity, thispaper mainly discusses the analysis, the suspension system damping’s effection on parameters.Firstly, a simplified model of suspension system, with a14layer structure as an example, the1-7layer in the first rigid rods hanging on, hanging in the8-14layer second rigid rod xoy, coordinateingsystem fixed on the ground. According to the calculation formula of Lagrange equation of dynamicresponse of the suspension system, and it use MATLAB language to write the time history analysisprogram, and enter the actual ground motion records and artificial wave on the structure dynamicresponse analysisthrough its research under the action of earthquake motion parameters, analysis ofdamping effect of suspension system. By calculating the earthquake motion state, and the analysis ofsuspension system is a damping effect. By comparing two cases of maximum layer displacement,maximum floor displacement, maximum floor speed and maximum floor acceleration, we found thatsuspension damping effect is best when the control of the optimal combination of factors.Through calculation and following conclusions: According to the Lagrange equation, theequations of motion of bearing column suspended structure system is established. Suspended floorsection floor layer displacement is greatly reduced, and the damping effect are close to97%. The floordisplacement along the suspension floor height distribution uniform; the floor velocity andacceleration were also reduced. Bending stiffness values are the most significant influence on theinternal force and displacement of bearing column section, and when the flexural rigidity valueincreases, section internal force increases, the horizontal displacement decreases; the length of thehanger rod, small floor damping coefficient influence on internal force and the horizontaldisplacement of the body.