| The connecting beam plays an important role in shear-wall structural system asan importantcomponent in tall buildings to enhance the behavior of shear walls. Theconnecting beam plays an important role in shear-wall structural system as animportantcomponent in tall buildings to enhance the behavior of shear walls.However, the traditional small-span-to-depth-ratio coupling beams feature highrigidity and low displacement ductility, to avoid the early shearfailurewithoutductility, the scholars introduced different forms of different reinforcement, but it ishard to generalize with restricted construction conditions.To improve the mechanical property of small-span-to-depth-ratio connectingbeams, the double coupling beams is presented. By means of open another slit of thesingle shear beam, to lower the structural stiffnessas a result of their successfulseismicbehavior. However, the effect of floor flange to the property of connecting beamswere not taken into consideration and the double connecting beams study is stillimperfect.This article compared connecting beams under four different controlledconditions by the finite element method, the main work is as follows:(1) Building connecting beams models with slabs and without slabs respectively,thought a comparison, we find that the floor flanges work together to enhance thelateral stiffness and improve the ultimate bearing capacity of structure, but lower thedisplacement ductility.(2)Building connecting beams models with different forms of up-section anddown-section respectively, to find the most reasonable location of slotting, theanalysis indicates that the size of up-section and down-section have an affect onultimate bearing capacity of structure and displacement ductility and connectingbeams which have the same size in up-section and down-section have a better seismicperformance.(3)Building connecting beams models with different spacings of up-beam anddown-beam respectively, we find that the spacings have no affect on the internal forceof beams.(4)Building singleã€double and triple connecting beams models respectively, wefind that double and triple connecting beams reduce the internal force of beamseffectively and the mechanical property of triple connecting beams with a betterperformance than double connecting beams. |
