Dynamic Analysis Of High-rise Frame-shear Wall Structure Respond To Pulsing And Earthquake

China is a seismically active country,a large proportion of the earthquake casualties are caused by collapsed houses,making houses seismic fortification is the premise of people's life and property safety.With the increasing of frame-shear wall structure,its structural seismic analysis becomes a hot issue.Ambient vibration test and modeling analysis are both effective ways to make a thorough understanding of building seismic performance.So far,Most of such studies input some Typical earthquake records or artificial seismic waves into computer models after making use of Ambient vibration test to obtain the Ambient vibration of buildings,however,this essay is based on the actual earthquake records by earthquake observation array.This essay is based on the building of Jiangnanshuidu 1#in Cangshan district,Fuzhou,Fujian province.The main research contents are:1.The test technology was simply summed up,and the strong motion observation array fixing in the building and the situation of environmental random records and seismic records were introduced.And we also introduced the methods that how to analyze data.2.All the observation records were analyzed in both time domain and frequency domain to study the structure dynamic behavior,and the first few frequencies were stated.The natural frequency in NS and EW directions are respectively 0.66Hz and 0.80Hz,the second frequency are respectively 1.21Hz and 2.90Hz,the third frequency in NS direction is 3.31Hz,the first two frequencies in Z are 0.69Hz and 0.80Hz.These dynamic behavior parameters would provide important information to modeling.3.Finite element modal analysis.By the Code and the drawings,the model was established with software ETABS,and we compared the natural vibration frequencies with the actual records.It appears that there is some error in high order frequency of NS,the rest are ideal.In addition,the author input actual records to verify the modal,and the conclusion shows that accelerations of building from ETABS are very close to the actual accelerations.4.Seismic response analysis.According to?Technical specification for concrete structure of tall building)),we enlarge the time history records from basement floor and input it into the model to simulate seismic response of weak earthquakes and strong earthquakes.Then we analyze story drift angle,absolute displacement and absolute acceleration and draw some conclusion:in weak earthquakes,the maximum of story drift angle is 1/843 and the ratio of largest displacement of the top and the building height is 1/1008,which are both less than the Architectural Design Specifications;in strong earthquakes,the maximum of story drift angle is 1/269,which is much more than the maximum elastic inter-story drift value,and some members are close to yielding limit but compared with elastic-plastic limit which may lead to building collapse,there are still large gap between them.Overall,it appears this building can satisfy No Damage With Weak Earthquake And No Collapsing With Strong Earthquake.