Experimental Investigation on Vulnerability of Precast RC Beam-column Joints to Progressive Collapse

The multi-story buildings are susceptible to progressive collapse in the event of the removal of one or more columns due to the exposure to blast loads. The lack of structural continuity in precast concrete buildings makes these buildings more vulnerable to progressive collapse as compared to the regular cast-in-situ concrete buildings. This study presents experiments involving two types of detailing of precast beam-column joints using half-scale test specimens when the middle column is suddenly removed. The test specimens represent the most prevalent precast beam-column joints. One conventional cast-in-situ test specimen, having continuous top and bottom beam rebars, was used for comparison. The progressive collapse scenario was simulated by removing the central column support and applying a sudden vertical load on this column at a rate of 100 mm/s until failure. Test results helped in developing better understanding about the progressive collapse potential in the existing precast buildings. This study highlights the need for the rehabilitation of beam-column connections in existing precast buildings and necessitates the need for innovative beam-column connections for improving the progressive collapse resistance.

[1]  Yan Xiao,et al.  Experimental Study on Progressive Collapse-Resistant Behavior of Reinforced Concrete Frame Structures , 2008 .

[2]  Tarek H. Almusallam,et al.  Progressive collapse analysis of a RC building subjected to blast loads , 2010 .

[3]  Shao-Bo Kang,et al.  Behaviour of precast concrete beam–column sub-assemblages subject to column removal , 2015 .

[4]  Kang Hai Tan,et al.  Experimental and numerical investigation on progressive collapse resistance of reinforced concrete beam column sub-assemblages , 2013 .

[5]  Amin Gholizad,et al.  A proposed procedure for progressive collapse analysis of common steel building structures to blast loading , 2017 .

[6]  K. Jaya,et al.  Experimental Study on Two Simple Mechanical Precast Beam-Column Connections under Reverse Cyclic Loading , 2013 .

[7]  Tarek H. Almusallam,et al.  Investigation of precast RC beam-column assemblies under column-loss scenario , 2017 .

[8]  O. A. Pekau,et al.  Progressive collapse simulation of precast panel shear walls during earthquakes , 2006 .

[9]  Tavio,et al.  Behavior of Precast Concrete Beam-to-Column Connection with U- and L-bent Bar Anchorages Placed Outside the Column Panel–experimental Study , 2014 .

[10]  Tarek H. Almusallam,et al.  Progressive collapse potential of a typical steel building due to blast attacks , 2014 .

[11]  Chang-Sik Choi,et al.  Development and testing of precast concrete beam-to-column connections , 2013 .

[12]  Jae-hyouk Choi,et al.  Prevention of progressive collapse for building structures to member disappearance by accidental actions , 2009 .

[13]  Sashi K. Kunnath,et al.  Macromodel-Based Simulation of Progressive Collapse: Steel Frame Structures , 2008 .

[14]  Yu Jun,et al.  A simplified approach to assess progressive collapse resistance of reinforced concrete framed structures , 2015 .

[15]  Turan Özturan,et al.  Ductile Connections in Precast Concrete Moment Resisting Frames , 2006 .

[16]  Shao-Bo Kang,et al.  Progressive collapse resistance of precast beam–column sub-assemblages with engineered cementitious composites , 2015 .

[17]  Y.A. Al-Salloum,et al.  Progressive Collapse Analysis of RC Buildings against Internal Blast , 2015 .

[18]  Hashem Shariatmadar,et al.  EXPERIMENTAL INVESTIGATION OF PRECAST CONCRETE BEAM TO COLUMN CONNECTIONS SUBJECTED TO REVERSED CYCLIC LOADS , 2011 .

[19]  M. K. Joshi,et al.  CYCLIC BEHAVIOUR OF PRECAST RC CONNECTIONS , 2005 .

[20]  Reza Ramezani,et al.  A new ductile moment-resisting connection for precast concrete frames in seismic regions: An experimental investigation , 2014 .

[21]  Bilal El-Ariss,et al.  Progressive collapse evaluation of externally mitigated reinforced concrete beams , 2014 .

[22]  Pattamad Panedpojaman,et al.  Moment capacity and fire protection of the welded plate joint for precast members , 2016 .

[23]  K. P. Jaya,et al.  BEHAVIOUR OF PRECAST BEAM-COLUMN MECHANICAL CONNECTIONS UNDER CYCLIC LOADING , 2012 .

[24]  Marlon Bazan,et al.  Experimental and Analytical Progressive Collapse Evaluation of Actual Reinforced Concrete Structure , 2007 .