Mechanical Behavior of Reinforced Concrete Frame Structure with Diagonal Members

A new kind of reinforced concrete(RC) frame structure with diagonal members is put forward,and the mechanical behavior of the new structure under vertical and horizontal loads is analyzed and compared with that of the conventional RC frame structure.The results indicate that the principal design sections of the new frame structure are located at the beam-diagonal member joint,the column-diagonal member joint and the column bottom,and that both the bending moments and the shearing forces of the new structure at the ends of beam and column greatly reduce.Moreover,the loading experiments and nonlinear finite element analysis of the large-size new structure shows that,in loading conditions,the plastic hinge appears first at the beam-diagonal member joint,then at the middle of the beam,that the ends of beam and column as well as the beam-column joint,all exhibit good mechanical behaviors,and that a reasonable design may provide the structure with good bearing and deformation capacities.