基于ABAQUS的凸轮式响应放大黏滞阻尼器消能体系抗震性能分析

The energy dissipation unit of a cam-type response amplification viscous damper (CRAD-VD) was developed based on ABAQUS software, and explicit solution programs for nonlinear analysis of the corresponding energy dissipation system were compiled. The ABAQUS calculation results of a single-degree-of-freedom damping system were compared with the analysis results by the MATLAB program, and the suitability of the CRAD-VD energy dissipation unit and the accuracy of the solution program were verified. Then, the seismic performance of a three-dimensional nonlinear model of the fabricated energy dissipation system was analysed. The results show that the developed CRAD-VD energy dissipation unit is effective and the solving program can accurately get the solution of the three-dimensional structural model. The three-dimensional structure system with small tonnage viscous dampers in series can get similar or better response control effect compared with directly installed tonnage dampers, effectively reduce the damage degree of assembled frame beams and columns, and materialize the response amplification effect of CRAD. The displacement amplitude of the series damper is always equal to the preset eccentricity, which can avoid the failure of the damper due to the displacement exceeding the limit under extremely rare earthquake.