| Title |
An Experimental Study on the Hysteretic Behavior of Exterior Wide Beam-Column Joint with the Various Shape of Spandrel Beam and Anchorage Detail |
| Authors |
Seo Soo-Yeon ; Yoon Seong-Joe ; Kim Jong-Seon |
| Keywords |
Wide Beam-column Joint ; Spandrel Beam ; Anchorage Detail ; Head Anchorage ; Debonded Reinforcement |
| Abstract |
In the RC frame system using wide beam, many of main bars in beam are not anchored inside the adjacent column but anchored in the spandrel beam since beam width is larger than column. Therefore, the structural behavior of the beam-column joint of this system is affected by the rigidity of column and beam as well as the properties of spandrel beam. The effective width of beam will be more wide if the main bar of beam is strongly anchored in the spandrel beam. In order to find the variation of the joint behavior, an experimental test result is presented in this paper. Five wide beam-column-spandrel beam joint specimens are designed and tested under increasing cyclic moment at the joint. Main parameters considered in the test are the depth of spandrel beam and the anchorage detail of main bars of wide beam in the joint.
From the test it was found that the specimen with head anchorage had higher strength than the specimen with normal hook anchorage. Specimen with debonded reinforcement at out of 1d from column face failed showing moved plastic hinge and less strength than normal specimen. However, the dissipated energy increased 11%. On comparison with previous formulas, the most approximate calculation of joint strength can be acquired by using Wight's formula. |