| The rocking wall structure can control the deformation mode of the structure without changing the stiffness of the structure,enhance the integrity of the structure,and has a replaceable function to achieve rapid repair.It is envisaged that on the basis of the rocking technology,additional dampers are used to consume seismic energy,thereby achieving a good combination of integrity and energy dissipation,and improving the seismic performance of the structure.Therefore,to understand the characteristics of seismic performance,working characteristics and failure process of the rocking wall structure after setting the energy dissipation of the damper is the core and key of this technology and idea,which is also the main research content and purpose of this article.In order to achieve a more complete analysis of seismic performance and working characteristics of the damped rocking wall structure under earthquake action,a numerical calculation model for three-dimensional pushover analysis was established for the two yield mechanisms of beam hinge and column hinge,and a calculation analysis was designed.The static pushover loading mode and working condition settings.Based on the key performances of the connection element hysteresis curve,structural period,and displacement angle between structural layers,different simulation units of the damper are compared and selected.Through static pushover analysis,the seismic performance and failure characteristics of the frame structure with different shock-absorbing components are compared.It shows that the rocking wall and the additional damper will increase the interlayer shear force to a certain extent,but can well control the development of the interlayer displacement angle and plastic hinge of the structure,and with the increase of the seismic intensity,the frame rocking wall structure The control effect of setting the damper is more and more significant.The comprehensive analysis of the seismic performance of the frame structure through beam hinge and column hinge shows that the seismic performance of the frame rocking wall structure has nothing to do with the overall seismic performance of the original frame structure and the yield mechanism.It is only related to the strength of each component.Install the rocking wall With the damper,the structural integrity will be greatly enhanced,and the strength of each component of the main structure can be integrated to dissipate seismic energy.A nonlinear dynamic time history analysis of fifty eight two-dimensional models in two groups was carried out,which showed that not all types of dampers would improve the seismic resistance of the frame rocking wall structure.When the yield capacity of the damper is the same,the trend of the displacement angle between the layers is basically the same.When the yield capacity of the additional damper is within the range of 0.03~0.11 times of the yield capacity of the structure,it will basically have a good control effect on the structure.The comparative analysis of the seismic performance of the frame rocking wall structure when the dampers are located at different positions shows that the dampers located on both sides of the wall and the two ends of the bottom can play a good energy dissipation role. |
