“Modeling Older-Type Reinforced Concrete Corner Beam-Column Joints for Progressive Collapse Simulation” Reinforced   concrete   (RC)   buildings  constructed   prior   to   the   introduction   of  ductile   detailing   principles   in   the   1970s  commonly   do   not   have   joint   transverse  reinforcement.   Such   “unreinforced”  joints,   especially   those   at   the   edges   and  corners   of   buildings,   have   proven  vulnerable  to  damage  and  collapse  in  past  earthquakes.   For   the   mitigation   of   the  collapse   risk   in   older   concrete   buildings,  accurate   progressive   collapse   tools   need  to   be   developed.   An   overview   of  developing  such   tools  using   the   “element  removal”   approach   will   be   presented  emphasizing   recent   developments   in  modeling   seismically-­‐deficient   RC   beam-­‐column   joints.   In   addition,   key   results  from   tests   of   four   full-­‐scale   RC   corner  beam-­‐column   joints   without   transverse  reinforcement   will   be   presented.   Finally,  preliminary   progressive   collapse  simulations   for   non-­‐ductile   RC   frames  will  be  presented.

Prof. Khalid Mosalam

Department of Civil and Environmental Engineering

University of California, Berkeley

Dr. Khalid Mosalam is a Professor and Vice Chair of the Civil and Environmental Engineering (CEE) Department of the University of California, Berkeley. His research focuses on the performance and health monitoring of structural systems subjected to extreme loads. He is the recipient of 2006 ASCE Walter L. Huber Civil Engineering Research Prize.  

Wednesday, September 29, 2010 JHU Homewood Campus Location TBD 12:00 – 12:45 pm

Seminar is FREE. For parking please see link for visitors at www.jhu.edu and select information on Homewood Campus.

One Professional Development Hour (PDH) will be awarded to attendees.