Experimental Study On Hysteretic Behaviors Of The Deep Beams

Reinforced concrete shear walls and steel frame are two commonly used systems for building structure. Most of reinforced concrete shear wall is brittle failure and difficult to repair after the earthquake; Lateral stiffness of steel frame is small,so it easily lead to the destruction of nonstructural members. Therefore, it is limited in high earthquake fortification zone. In order to realize the modulation of structural stiffness in a certain range, deep Beam is a new anti-lateral force member, when earthquake occurs, deep beam plays a role as the first line of defense, firstly consumes seismic energy. It can be widely used in the new building, and strenghening or renovation building.Considering the analysis of the domesticiriternational researches background of deep beams and the significance of the research and nonlinear factors of different materials and span-high ratios, this paper design three materials of deep beams (steel, reinforced concrete and composite). For each kind of material, two deep beams of different sizes are tested. There are six model tests are accomplished in total.For each specimen under low-cycle loading,we get the hysteretic loops,distribution of stress,deformation behaviour, energy dissipation, the ductility and strength degeneration.The experiment results show: the affect of material and span-high ratio of deep beams is so big that this page evaluate it,and do some advices to the people afterward.