Research On Seismic Performance Of Self-centering System With Angle

Based on the research of self-centering connection, we are going to simplify the connection models on the basis of force condition, transmission power among beams by six springs, simplify the beams to fiber unit and accelerate the model operation. Establishing three-level single-span self-centering structure by the soft of Opensees. Then, putting the specimen under monotonic loading and cyclic loading, changing the geometric parameters, cross section area of steel strand and arrangements of specimen. At last, inspecting the impact on performance of self-reset structure from different parameters through the simulation calculation. Establishing eight-level single-span and eight-level three-span Self- centering structure. By comparing the bearing capacity of steel frame structure with self-centering connection in domestic to normal steel frame structure, inspecting maximum shear of each basal, the maximum displacement, speed and maximum residual displacement of each level. After loading earthquake application on self- centering structure frame, on the basis of hysteresis curve to research the energy consumption characteristics of the structure on the earthquake.The simulation analysis show that steel strand provides the main flexural bearing capa city for the node after release and steel strand spacing strand has not effect on the bearing capacity of structure; Initial lateral stiffness of self-centering steel structure only affect by s tructural height, distance between frame column and beam bending stiffness not area and p restress of steel strand;Angle as the main energy consumption structure that he greater the energy dissipation structure,the thickness of the angle should be designed smaller than flan ge to prevent plastic deformation betweem baem and column in advance.The self-centering structure system with angle for energy dissipation Compared with the frame with the ordinary nodes fixed. The structure of self-centering`s shear at the column base is smaller than a tranditional steel frame under the seismic load, their maximum velocity is closer, The layers maximum relative displacement and the maximum residual deformation is less than 0.2%,Instructions that self-resetting structure to meet the requirements of practical engineering。...