Research On Hysteretic Behavior Of Coupled Steel Plate Shear Wall With Replaceable Link Beams

Double plates embedded in concrete composite shear wall structure have a high bearing capacity, lateral stiffness, good seismic performance and double limb shear wall structure also have a multi-channel seismic resistance capability, a new coupled steel plate shear wall structure with replaceable link beams is proposed. Replaceable link beams exist to overcome the difficulties in repairing after earthquake, so the study and analysis of the hysteretic behavior of such shear wall structure with a project value. In this paper, experimental study and finite element means combining a systematic study of the structure, mainly to complete the work as follows:(1) Designed a two and a half coupled steel plate shear wall structure with replaceable link beams 1/3 scale specimens, even during the test beams replaced twice, a total of three times under cyclic loading hysteretic behavior test. Through experimental system to study the failure mode of coupling beam structure before and after the replacement, transfer mechanism, hysteretic behavior, stiffness degradation, degradation of the bearing capacity, energy dissipation capacity seismic performance.The results showed that SWL have good seismic performance, high capacity, can achieve multiple objectives fortification; replaceable apex lateral ratio can be controlled within(1/100 ~ 1/55) range; the structure of lateral stiffness, replace the front and rear stiffness degradation is not obvious, to meet the requirements of the post-earthquake restoration; curved lateral deformation structure type.(2) Using ABAQUS finite element software to establish a model test specimen, comparative test results verify the credibility of the model. Further analyzes link beams length, even on the seismic performance of beam web structure influence of structure. The results show that: an replaceable link beams length within(0.8 to 1.3) more reasonable range of design values; even the beam web and open circular hole diamond hole structure and even ordinary compared to steel beams can utilize energy dissipation capacity and structure carrying capacity.