0 510 15 20 25 Time (s) 0.3 T = 3.0 s max 0.255 m Displacement Response Spectrum 0 0.3-0.3 0 03 T = 2.5 s 03 0 0.3-0.3 max 0.176 m T = 2.0 s max 0.274 m DISPLACEMENT SPECTRUM EL CENTRO RECORD I am using excel. ... El Centro , 1940, Record N S Comp. Mcch., 39, 6, pp. The El Centro earthquake occurred in United States of America on 18th May, 1940 with moment magnitude of 6.9 and Mercalli intensity scale. Superpositon of Response Spectra The corrected accelerograms of El Centro 1940 earthquake Chapter 2: Strong Motion and Estimation of Seismic Hazard; Chapter 3: Dynamics of Earthquake Analysis; Chapter 4: Response Spectrum Method; Chapter 5 : Response Analysis for Multi Support Earthquake Excitation ; Chapter 6 : Seismic Soil-Structure Interaction; Chapter 7: Non-linear Seismic Response of Structures Cite this Article M. Ahatri , K Baba,S. Lecture 6 Lecture 6 –– Design Response Design Response Spectrum Dr Hazim Dwairi Dr. Hazim DwairiDr. 589-603, Warszawa 1987 Horizontal-vertical response spectra for El Centro 1940 earthquake I. I. ORABI (NEW HAVEN) and G. AHMADI (POTSDAM) A SINGLE-DEGREE-OF-FREEDOM structure subjected to horizontal and vertical earthquake ground accelerations is considered. I am quite new to earthquake engineering and was hoping someone could help me out. Present code plots the response spectrum for the given seismic input. Figure 2(b) shows the acceleration response spectra calculated for the El Centro 1940 earthquake for various damping values. There are four major sources of earthquake spectra available in CAESAR II: El Centro. S00E). … Touijrate And L. Bahi, The Seismic Motion Parameters Effects on Response Spectra: Comparison Between El Centro 1940 and Imperial Valley 1979 Earthquakes, International Journal of Civil Engineering and earthquake (Clough 1962) or, based on the seismic history of an area, an acceleration spectrum envelope is developed for use in structural design. Arch. Earthquake Ground Motions. To EQ Eng. Keywords: Soil, Earthquake, Response spectra, Seismic analysis, Acceleration, Ordinary differential equation. This predefined data is taken from J. Biggs’ Introduction to Structural Dynamics and is based on the north-south component of the May 18, 1940 El Centro California earthquake. At this stage, I have plotted Acceleration v Time, Velocity v Time and Displacement v Time. – Spectrum has a general trapezoidal A displacement response spectrum is the plot of maximum displacement of a single degree of freedom system (SDOF) to a particular ground motion as a function of the natural frequency and damping ratio of the SDOF. Shock Response Spectrum The amplification factor for the curve in Figure 6 is Q=10, which is equivalent to a damping ratio of 0.05. 3. Note the level in Figure 6 is somewhat higher that the corresponding VAFB level in Figure 2. Response Spectrum Characteristics We now study the important characteristic of response spectrum of earthquake ground motions. The response spectrum for north-south component of El Centro ground motion for damping ratio = 0, 2, 5, and 10% is plotted together with the ground motion parameters ugo, u … The Artificial earthquake record is defined by accelerograms which is compatible with a design spectrum and their response spectra will be equal to the target spectrum. values, response spectra of El Centro earthquake (1940 05 18, comp. I am looking at the El Centro 1940 quake and trying to plot the earthquakes response spectrum. Dr. Hazim Dwairi 1940 El Centro, 0.35 g, N1940 El Centro, 0.35 g, N--SS Dr. Hazim DwairiDr. Hazim Dwairi The Hashemite University The Hashemite University Intro. SHOCK RESPONSE SPECTRA, Q=10 EL CENTRO EARTHQUAKE MAY 18, 1940 NORTH-SOUTH COMPONENT Figure 6. – Response spectrum of an earthquake ver irreg larery irregular. I have plotted Acceleration v Time and Displacement v Time Acceleration, Ordinary differential equation earthquake engineering was... 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