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Structural Dynamics e-books Archives | CivilDigital

Structural Dynamics e-books

Dynamic Analysis Methods for Seismic Bridge Design

Sutong Bridge china

Dynamic Analysis Methods for Seismic Bridge Design Depending on the seismic zone, geometry, and importance of the bridge, the following analysis methods may be used for seismic bridge design: The single-mode method (single-mode spectral and uniform-load analysis) assumes that seismic…
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Earthquakes

earthquake

Earthquakes Outline —  What is Earthquake —  Types of Seismic Waves —  Effects of Earthquakes —  Site Selection —  Building Construction Materials —  Building Planning | Earthquake Resistant Buildings —  Earthquake Resistant Techniques —  Summary and Conclusion What is Earthquake?…
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Response Spectrum Analysis in STAAD explanation Video

Response Spectrum Analysis in STAAD explanation Video Methodology The design lateral shear force at each floor in each mode is computed by STAAD in accordance with the IS: 1893 (Part 1) -2002 (equation 7.8.4.5c and 7.8.4.5d.) Qik = Ak*fik*Pk*Wi STAAD…
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Classification of Earthquakes

Classification of Earthquakes BASED ON LOCATION: Interplate Intraplate An interplate earthquake is one that occurs at a plate boundary An intraplate earthquake is an earthquake that occurs in the interior of a tectonic plate Recurrence time is less Recurrence time is longer Interplate Earthquakes are recognized at…
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SOFT STOREY EFFECT DURING EARTHQUAKE

Isolation reduced the damages caused during an earthquake

SOFT STOREY EFFECT In shaking a building, an earthquake ground motion will search for every structural weakness. These weaknesses are usually created by sharp changes in stiffness, strength and/or ductility, and the effects of these weaknesses are accentuated by poor…
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Measuring Earthquakes | Measuring Earthquake

Seismographs record earthquake events

Measuring Earthquakes The power (magnitude) of an earthquake is measured on the Richter scale, using an instrument called a seismometer.The Richter scale is numbered 0-10 with 10 being the most powerful. The Richter scale is logarithmic – an earthquake measuring…
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Vibration Analysis of Structures

model hammer

courtesy:Govardhana Rao Introduction to Vibration Analysis of Structures Civil engineering structures are always designed to carry their own dead weight, superimposed loads and environmental loads such as wind or waves. These loads are usually treated as maximum loads not varying…
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The Dynamic Analysis Of Structures

Dynamic analysis

Dynamic Analysis Of Structures Introduction to Dynamic Analysis Of Structures All real physical structures, when subjected to loads or displacements, behave dynamically.  The additional inertia forces, from Newton’s second law, are equal to the mass times the acceleration.  If the…
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Structural Dynamics and Degree of Freedom

SDOF

Structural dynamics and earthquake engineering 1. Define the concept of dynamic degree of freedom. Give some examples of single degree of freedom systems and multi degree of freedom systems. Answer: Dynamic degrees of freedom are a set of independent displacements/rotations…
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