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Seismic Analysis of Structures

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lumped MDOF-sytem with rigid base translation (horizontal case) Earthquake Loading From Clough, Penzien (3) hysteresis law ground acc.

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 3 Stahlbau Grundlagen – Einführung Prof. Dr.-Ing. Uwe E. Dorka 3 Reference peak-ground acceleration at Udine: 2.75 m/s 2

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viscously damped SDOF oscillator where:Eigenfrequency: Damping ratio: solving this equation for various and but only for one specific earthquake, the maximum absolute acceleration of this solution gives us the diagram above Response Spectra From Petersen (2) From Meskouris (5) simplified response spectrum

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 5 Example: School building with steel frames or Hyde system

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Hyde System Static Systems IPE 500 M2=12450Kg3.20 8.00m 3.20 3.20 3.20 3.20 HEB 400 M1=16185Kg M1=16185Kg M1=16185Kg M1=16185Kg m m m m m Frame IPE 500 3.20 8.00m 3.20 3.20 3.20 3.20 HEB 200 m m m m m

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 7 Frame Hyde System

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 8 Frame Hyde System

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 9 Frame

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 10 Frame details

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 11 Hyde System

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Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 11.07.2006 12 Hyde System details

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