| Title |
Experimental Verification of Design Approaches of RC Transfer Girders Topped by Partially Filled Shear Walls |
| Authors |
Ko Dong-Woo ; Lee Han-Seon |
| Keywords |
Transfer Girder ; Reinforced Concrete ; Strut-and-tie Model |
| Abstract |
Typical type of apartment building having piloti stories in Korea was selected, and designed three transfer girder by using two available design procedures, which are ACI conventional procedure (AS-72) and strut-and-tie model procedure (SS-72, SS-54). This paper shows the design procedure and evaluates of the capacity of transfer girder gravity loading tests. (1) The amount of longitudinal reinforcement of transfer girder designed by strut-and-tie method is similar with that of conventional approach, but the amount of transverse reinforcement can be reduced to 50% comparing with that of conventional method. (2) The shear capacities of the three specimens satisfy the required shear force. Especially the overstrength of SS-72 is 1.19, in spite of the amount of transverse reinforcement is 50% of the transfer girder designed by conventional procedure. (3) The maximum moments of specimens are about two times larger than design moment, because of the participation of upper wall on the flexural behavior of transfer girder. (4) shear span/depth ratio (a/d) affects on the final failure mode of transfer girder, AS-72 (a/d = 2.10) and SS-72 (a/d = 2.04) failed diagonal tension crack penetrating the shear critical region, and SS-54 (a/d = 2.93) shows concrete crushing on the upper part of transfer girder. |