ESTIMATI NG MAXIMUM POUNDING FORCE BETWEEN TWO ADJACENT STRUCTURES

Seismic pounding between adjacent buildings with inadequate separation and different dynamic characteristics can cause severe dam age to the colliding buildings. Therefore, the ea rthquake resistant design of structures due to pounding needs the knowledge of maximum pounding force. Effficient estimation of the maximum pounding force is require d to control the extent of damage in adjacent str uctures. In this paper, an analytical approach on the basis o f statistical relations is presented for the appr oximate computation of maximum pounding force between two adjacent single-degree-of-freedom (SDO F) systems subjected to stationary and non ـstationary excitations. The pounding effect has been simulated by applying the nonlinear viscoelastic model. The proposed a pproach can significantly save computational cos ts by obviating the need for performing dynamic analysis and accurately estimating the maximum of poundin g force. Accuracy of the proposed approach in comparison w ith the exact method is investigated using nonlin ear dynamic analysis.

Keywords:

Structural Pounding , P ounding Force , Random Vibration , Statistical Relations , Bouc-Wen Model.