Behavior of interior RC wide and conventional beam-column roof joints under cyclic load

Abstract Performance of RC interior beam-column joints at roof level is defined as the area needing research by ACI 352R-02. Because of a lack of research data on performance of this type of joints, two half scale interior beam-column connections with discontinuous column were designed in accordance with ACI 318-11 and ACI 352R-02 provisions. One of the specimens had wide beams and the other had conventional beams to compare their behavior. These specimens were tested under quasi-static cyclic loading. It became clear by the experiments that roof wide beam-column joint had lower strength compared to that of roof conventional beam-column joint. Both of the specimens had almost equal energy dissipation capacity. The conventional beam-column joint reached its expected capacity but wide beam-column joint did not reach its capacity. Moreover, wide beam-column joint had sufficient joint shear strength unlike conventional one. Therefore, joint shear requirements could be relaxed for roof wide beam-column joint. This relaxation must be reapproved by more tests to be advisable for design purposes.

[1]  Amadeo Benavent-Climent,et al.  Seismic Behavior of RC Wide Beam-Column Connections Under Dynamic Loading , 2007 .

[2]  Sudhakar A. Kulkarni,et al.  Seismic Behavior of Reinforced Concrete Exterior Wide Beam-Column Joints , 2010 .

[3]  Helen M. Goldsworthy,et al.  Interior wide beam connections subjected to lateral earthquake loading , 2003 .

[4]  E. P. Popov,et al.  BEHAVIOR OF INTERIOR NARROW AND WIDE BEAMS , 1992 .

[5]  Ö. Yurdakul,et al.  Strengthening of substandard reinforced concrete beam-column joints by external post-tension rods , 2016 .

[6]  Ana Lúcia Homce de Cresce El Debs,et al.  Moment–rotation relationship of RC beam-column connections: Experimental tests and analytical model , 2013 .

[7]  J. Wight,et al.  Behavior of reinforced concrete exterior wide beam-column-slab connections subjected to lateral earthquake loading. , 1999 .

[8]  Bing Li,et al.  Seismic Behavior of Reinforced Concrete Interior Wide-Beam Column Joints , 2008 .

[9]  A. Benavent‐Climent,et al.  Interior wide beam-column connections in existing RC frames subjected to lateral earthquake loading , 2010 .

[10]  Jaehong Kim,et al.  Probabilistic Joint Shear Strength Models for Design of RC Beam-Column Connections , 2008 .

[11]  James Michael LaFave,et al.  Reinforced Concrete Wide-Beam Construction vs. Conventional Construction: Resistance to Lateral Earthquake Loads , 2001 .

[12]  K. Kazuhiro,et al.  Development of Design Criteria for RC Interior Beam-Column Joints , 1991, SP-123: Design of Beam-Column Joints for Seismic Resistance.

[13]  Amadeo Benavent-Climent,et al.  Exterior wide beam–column connections in existing RC frames subjected to lateral earthquake loads , 2009 .

[14]  Mohamed H. Harajli,et al.  Seismic response of exterior RC wide beam–narrow column joints: Earthquake-resistant versus as-built joints , 2013 .

[15]  P. Mendis,et al.  Reinforced concrete interior wide-band beam-column connections subjected to lateral earthquake loading , 2001 .

[16]  Hong-Gun Park,et al.  Design considerations for interior RC beam-column joint with additional bars , 2015 .

[17]  Jaehong Kim,et al.  Key influence parameters for the joint shear behaviour of reinforced concrete (RC) beam–column connections , 2007 .

[18]  Jung-Yoon Lee,et al.  Strength deterioration of reinforced concrete beam–column joints subjected to cyclic loading , 2009 .

[19]  Ahmed Ghobarah,et al.  Shear Strengthening of Beam-Column Joints , 2002 .

[20]  Amadeo Benavent-Climent,et al.  Reinforced Concrete Exterior Waffle Flat Plate-Column Connections Subjected to Lateral Earthquake Loading , 2009 .

[21]  Issa Fadwa,et al.  Reinforced concrete wide and conventional beam–column connections subjected to lateral load , 2014 .

[22]  John W. Wallace,et al.  Use of Headed Reinforcement in Beam-Column Joints Subjected to Earthquake Loads , 1998 .

[23]  James K. Wight,et al.  Experimental study of reinforced concrete interior wide beam-column connections subjected to lateral loading , 2001 .

[24]  James K. Wight,et al.  Wide Beam-Column Connections under Earthquake-Type Loading , 1994 .