Seismic Behavior Research Of The Embedded High Redundancy Shear-wall

In recent years, redundancy theory has aroused widespread concern in civil engineering, computer, journalism, medical, machinery manufacturing and many other areas. Especially after "911" World Trade Center (WTC) collapse, researchers in the USA, Japan, and other countries has started a broad discussion and research in structural redundancy. They believe that the redundancy should be one of the concepts which must be considered in structural design. Redundancy theory analysis mainly focuses on the overall structure study, but few concerns the reinforced concrete shear wall components which are widely used in high-rise building. To fill this gap, supported by the National Science Foundation for Distinguished Young Scholars of China, this paper researched the seismic bihavior of Embedded Dumbbell-shaped and Wall-frame high redundancy shear wall, and applied the redundancy theory on this shear wall. The study on seismic behavior of this shear wall can provide a reference for future research and design of high redundancy shear wall, and can also offer new ideas for the anti-seismic design on shear wall structure.By researching both theoretically and experimentally on two specimens of high redundancy shear walls, whose height width ratio is respective 0.67 and 1.22, this paper tries to explore the mechanical characteristics and damage phenomenon of this structural shear wall, and to expatiate the superiority of this shear wall compared with ordinary shear wall.Through a pseudo-static experiment of two specimens, the damage form, bearing capacity, stiffness, energy dissipation, and hysteresis property etc. of this shear wall are investigated, thus excellent seismic performance is indicated, and its damage level is showed obviously. Because both the two specimens are two floors, which means there is a flange in the middle to simulation the floorslab, it is largely possible that the experiment provides more realistic reflection of shear wall destruction in practical engineering. The test data and phenomenon indicate that this shear wall has greate energy dissipation capacity and high redundant, which may provide support and reference for earthquake resistant design.The mechanical model of this high redundancy shear wall is analyzed by utilizing ABAQUS finite element analysis software. The numerical value model of Embedded Dumbbell-shaped and the Wall-frame high redundancy shear wall is established by choosing the material properties of reinforced concrete and setting the plasisity damage model in software. Meanwhile, steps are set the same as the experiment process to obtain the finite element analysis result. By comparing this result with the experimental one, some reference for further study could be provided.The remove analysis method of anti-collapse for whole structure is applied on component anti-collapse anlysis, and ABAQUS finite element software is used to simulate the anti-collapse remove analysis of Dumbbell-shaped and the Wall-frame high redundancy shear wall. The redundancy and the substitutability of strength transfer path of this shear wall can be assessed from the analysis result. At the same time, it is also inspected whether the high redundancy shear wall may bear load and consume energy continuously and not into collapse state under the condition of losing a structure strength transmission form.