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**Seismic Analysis of Structures**

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**Earthquake Loading lumped MDOF-sytem with rigid**

base translation (horizontal case) ground acc. From Clough, Penzien (3) hysteresis law

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**Reference peak-ground acceleration at Udine: 2.75 m/s2**

Stahlbau Grundlagen – Einführung Prof. Dr.-Ing. Uwe E. Dorka Earthquake Engineering Prof. Dr.-Ing. Uwe E. Dorka Stand: 3

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**Response Spectra viscously damped SDOF oscillator**

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

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**Example: School building with steel frames or Hyde system**

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

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**Static Systems Frame Hyde System M2=12450Kg M1=16185Kg IPE 500 IPE 500**

3.20 8.00m HEB 400 M1=16185Kg m IPE 500 3.20 8.00m HEB 200 HEB 200 m

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**Frame Hyde System Earthquake Engineering**

Prof. Dr.-Ing. Uwe E. Dorka Stand:

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**Frame Hyde System Earthquake Engineering**

Prof. Dr.-Ing. Uwe E. Dorka Stand:

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**Frame Earthquake Engineering**

Prof. Dr.-Ing. Uwe E. Dorka Stand:

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**Frame details Earthquake Engineering**

Prof. Dr.-Ing. Uwe E. Dorka Stand:

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**Hyde System Earthquake Engineering**

Prof. Dr.-Ing. Uwe E. Dorka Stand:

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**Hyde System details Earthquake Engineering**

Prof. Dr.-Ing. Uwe E. Dorka Stand:

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IIT Madras, SERC Madras, Anna Univ., INSDAG

IIT Madras, SERC Madras, Anna Univ., INSDAG

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