| The frame structure usually be destroyed by “infilled weak layer”and“short column”because of the existence of infill wall,which will lead the shortage of seismic performance of frame structure;at the same time mortar filling wall is diffcult to masonry,the construction technology is very tedious,which is bad for the promotion of construction industrialization in our country.Arrange dryed-stack panel in frame structure can improve the seismic performance of frame structure by th friction between blocks,at the same time ryed-stack panel can be made in a factory,which is accord with the goal of“Promoting the industrialization of Architecture”proposed in our counry.Studies have shown eht energy dissipation capacity of dryed-stack panel is related to the friction characteristics of blocks,researchers have not conducted in-depth studies on this issue.Studies have shown the friction coefficient of blocks is a attenuation variable,researchers have not quantitative study this dynamic friction characteristics.Based on this,This article put forward a more accurate friction attenuation model,Based on finite element simulation method intensive studied the dryed-stack panel frame structure friction related characteristics.The main research contents are as follows:(1)According to the experimental results and analysis of the friction mechanism,put forward the attenuation model of dynamic friction coefficient considering the block relative sliding speed,sliding path effect,fitting the unknown parameters in the model by experimental data,realized the quantitative analysis of the friction attenuation model of block.Realized the application of the dynamic friction coefficient attenuation model in ANSYS by using APDL language.(2)Used the method of numerical simulation,established the single span dryed-stack panel frame structure model with a constant friction coefficient;at the same time,use the experimental data to verify the accuracy of the model.Based on the finite element model.established the dryed-stack panel frame structure model with different friction coefficients.Drawed the displacement load curve,ductility curve and hysteretic curve of the structure in different working conditions.Through the calculation results and the stress distribution on the dryed-stack panel,it was found that the the lateral stiffness was improved about 30%,the hysteretic behavior was improved by about 30%,because of the friction coefficient increase 0.1;Through the ultimate load of eh dryed-stack panel frame structure model,ti is found that the ductility of the structure will be decreased with friction coefficient increases.(3)Established frame structure Finite element model、dryed-stack panel frame structure model and slurry panel frame structure model,Researched the seismic performance of the structure by seismic time history analysis.The results shown that the loading seismic wave shape will effect the damping effect of dryed-stack panel frame structure.The damping effect of dryed-stack panel frame structure is better than slurry panel frame structure.Compared with the slurry filled wall frame,he setting of the weak layer has little influence on the response of dryed-stack panel frame structure.So the Arrangement of the dryed-stack panel is more flexible. |
