Seismic Behavior And Countermeasures Of Framed Shear Structures After Improved Seismic Action

China is an earthquake-prone country,suffering from a lot.As a result of the implementation of a new seismic zoning map,the seismic effect in some areas has increased.Considering the near field impact,the earthquake effect is further improved and the hidden danger is more deepened.The seismic performance analysis of all kinds of existing buildings can reasonably evaluate the resistance.If the building doesn’t meet the requirements,the corresponding reinforcement countermeasures need to be formulated to improve the performance.At the same time,under what kind of situation to use what method to make reasonable reinforcement,which countermeasure is most effective,are the current relevant research in the urgent problem to be solved.Through the model creation of a high-rise frame-shear wall structure with 8(0.2g)fortification as an example,the calculation and analysis of input actual reinforcement and related parameters are carried out,and the key technologies of seismic performance evaluation and seismic reinforcement under different conditions are studied.The results show that the reinforced buildings after the increase of earthquake action must carry out seismic performance evaluation and necessary seismic reinforcement in order to improve its seismic performance and ensure the safety of people’s life and property.The seismic performance evaluation of the structure is carried out under different working conditions after considering the adjustment coefficient of seismic action.The identification function of the analysis software is used to check the bearing capacity and deformation,to determine the weak parts of the seismic resistance of the structure,and to use the elastic time history analysis to supplement the calculation and the reinforcement effect of the audit;for the seismic reinforcement of the frame-shear wall structure,it is recommended to adopt the general reinforcement method under 8(0.3g)condition.Under the near field action of the 8(0.3g)condition of priority to use the method of adding dampers to reinforce.Figure 101;Table 57;Reference 52.