| At present,people’s pursuit of cultural life is more and more intense.The traditional reinforced concrete frame structure is limited by the limitations of materials and structural arrangement.It is difficult to meet the space requirements of public buildings.The steel-fasting sandwich plate structure is a new type of three-dimensional space structure.The system has better stress performance and economy,and can meet the requirements of public buildings for large spans.As the world enters the active period of earthquakes,earthquake disasters are becoming a major threat to human security.In particular,the damage of near-field earthquakes is much greater than that of ordinary mid-and far-field earthquakes.At present,there are few structures such as steel-fasting sandwich panels.Seismic response analysis of near-field seismic action.In this paper,a numerical model of steel-fasting sandwich panel structure is established by using SAP2000 finite element software.The modal analysis method is used to study the concrete thickness,shear key length,steel column and hollow beam flange width,and long-span ratio structure.The influence of vibration characteristics is analyzed.The dynamic response of such structures under near-field pulse type earthquake,near-field non-pulse type earthquake and far-field earthquake is analyzed and compared by nonlinear time history analysis.The results show that the three parameters of long span ratio,concrete slab thickness and steel flange flange width have great influence on it;in near-field earthquake,velocity pulse and fault distance have great influence on vertex displacement and base shear plastic hinge distribution.The damage of the structure to the structure is far deeper than that of the far-field earthquake;the beam-column joint of the open-air sandwich plate structure is the weak area of the hinge that is easy to be hinged,and the reinforcement measures should be taken;the vertical earthquake will weaken the pulse-type near-field earthquake.The lateral dynamic response of this type of structure causes large vertical damage,but has little effect on the base shear force.In the non-pulsed near-field earthquake,the vertical earthquake hardly affects the lateral dynamic response.However,it also causes large vertical damage and has no effect on the base shear force. |
