论文信息 - Optimum Characteristics of Isolated Structures

Optimum Characteristics of Isolated Structures

The effect of frequency content of the ground excitation on the optimum design of a base isolation system and a first‐story damping system is investigated. The ground excitation is modeled as a filtered white noise with Kanai‐Tajimi power spectral density. The stationary response, including peak response, is derived in closed form. Small “ground frequencies” result in considerable differences of the optimum design as compared with the one based on a white noise model of the excitation. Examples show the manner of applying the results to an ordinary two‐story structure. Time‐history analyses of the optimized structures confirm the results of the stochastic analysis.

Michael C. Constantinou | Itadj G. Tadjbakhsh | M. Constantinou | I. Tadjbakhsh

[1] Robert J. McNamara,et al. Tuned Mass Dampers for Buildings , 1977 .

[2] Dieter D. Pfaffinger,et al. Calculation of Power Spectra from Response Spectra , 1983 .

[3] Loren D. Lutes,et al. Frequency Content in Earthquake Simulation , 1979 .

[4] A. Papageorgiou,et al. A specific barrier model for the quantitative description of inhomogeneous faulting and the prediction of strong ground motion. I. Description of the model , 1983 .

[5] Paul H. Wirsching,et al. Safety design concepts for seismic structures , 1973 .

[6] Robin K. McGuire,et al. The character of high-frequency strong ground motion , 1981 .

[7] Thomas C. Hanks,et al. b values and ω−γ seismic source models: Implications for tectonic stress variations along active crustal fault zones and the estimation of high‐frequency strong ground motion , 1979 .

[8] Michael C. Constantinou,et al. Probabilistic Optimum Base Isolation of Structures , 1983 .

[9] M. C. Constantinou,et al. Optimum design of a first story damping system , 1983 .

[10] G. B. Warburton,et al. Optimum absorber parameters for various combinations of response and excitation parameters , 1982 .

[11] I. C. Medland,et al. Base isolation systems for earthquake protection of multi-storey shear structures , 1979 .

[12] Daniele Veneziano,et al. Seismic Effectiveness of Tuned Mass Dampers , 1981 .