1. Systematic Problem Solving & Decision Making Train-the-Trainer Workshop Low-rise vs. Tall Buildings:What is Safer duringEarthquake in Bangkok? Dr. Thiti Vacharasintopchai thitiv@{siu.ac.th, alumni.ait.ac.th}April 3, 2011

2. Outline What happens during Earthquake? Seismic Hazard Maps PGA : Peak Ground Accelerations Newtons Second Law Total force applied on a body is equal to the time derivative of linear momentum of the body. Structural Dynamics Vibrations, Natural Frequencies, Mode Shapes Typical Design of Low-rise vs. Tall Buildings The Bangkok Soft Clay Conclusion 2 3. What happens during Earthquake?http://www.civilengineergroup.com/wp-content/uploads/2010/12/seismograph.gifhttp://www.tulane.edu/~sanelson/images/sgraph.gif http://en.wikipedia.org/wiki/P-wave 3 4. Seismic Hazard Mapshttp://www.bangkokpost.com/media/content/20110326/249115.jpg http://www.crew.org/science/pgaall.html 4 5. Newtons Second Law Total force applied on a body is equal to the time derivative oflinear momentum of the body.http://en.wikipedia.org/wiki/Newton%27s_laws_of_motion 5http://articles.architectjaved.com/earthquake_resistant_structures/files/2010/06/deformation.jpg 6. Structural Dynamics Vibrations, Natural Frequencies, Mode Shapeshttp://www.tulane.edu/~sanelson/images/sgraph.gif http://www.wbdg.org/images/seismic_7.gifhttp://www.structuremag.org/images/1107-bb-1.gif 6 7. Typical Design of Low-rise vs. Tall Bldgs Tall Buildings http://www.gpsworld.com/files/gpsworld/nodes/2003/3396/chart1.jpg 7 8. Characteristic of The Bangkok Soft Clay http://upload.wikimedia.org/wikipedia/en/thumb/e/ea/ Bangkok_microzonation_map.jpg/300px-Bangkok_microzonation_map.jpgMexico City 1985http://eqseis.geosc.psu.edu/~cammon/HTML/Classes/IntroQuakes/Notes/Images_specific02/site_amplification.gifResonance with10-story Buildings http://www.smate.wwu.edu/teched/geology/GeoHaz/eq-Mexico/eq-Mexico-08.JPG 8 9. Present Tall Buildings are Saferduring Earthquake in Bangkok?Structural UpgradeBusiness OpportunityCONCLUSIONThanks to Google Images 9