Parametric Study on Mixed Torsional Behavior of U-Shaped Thin-Walled RC Girders

Figure 15

Simulated and calculated results of girders with various span lengths under different boundary conditions: (a) torque-rotation curves under fixed-fixed supporting, (b) torque-rotation curves under simple supporting, and (c) simulated and calculated failure modes and ultimate torques. In (a) and (b), “SL-CL ratio” means span length-characteristic length ratio; “YL” and “YS” mean yielding of longitudinal bars and yielding of stirrups, respectively. In (c), the first abbreviation “FS” and “SS” means fixed-fixed supported and simply supported, respectively; the second abbreviation “C” and “S” means calculated and simulated, respectively; and the third abbreviation “FF,” “SF,” and “FSF” means flexural failure, shear failure, and flexural-shear failure, respectively.

(a)

(b)

(c)