Elasto - Plastic Analysis Of Reinforced Concrete High - Rise Frame Structure - Analysis Of A Flat L - Shaped Plane Overrun Office Building

At present, the reinforced concrete high-rise frame structures are widely used in our daily life,for example,office buildings, residential, hospital...and our country is an earth-quake-prone country which need to carry on the seismic fortification in most parts of the country. What’s more, the contemporary economic losses caused by the earthquake is bigger and bigger, therefore, the research of high-rise frame structure seismic performance is of great significance.A practical L plane reinforced concrete high-rise frame building is as an engineering ex-ample in this paper, introduced performance-based seismic design philosophy and develop-ment situation at home and abroad.The basic principles of pushover analysis method, the basic theoretical assumptions, basic steps and analytical methods and derivation of corre-sponding formulas is introduced in the second chapter.Additionally, the typical pushover anal-ysis method-Nonlinear static procedure(NSP), capacity spectrum method (CSM), N2method are also discussed in detail. Finally, the pushover analysis of several levels of lateral load patterns is presented, such as the level of loading mode inverted triangle, uniform level of loading mode, the exponential distribution mode.Dynamic elastic-plastic time history analysis method are described in Chapter III,including the basic principles of Dynamic elastic-plastic time history analysis method, the basic assumptions, the basic steps,the selection of seismic waves,the methods of mechanical model, the establishment and solving of structural vibration equation. The solving methods includes linear acceleration method, Newmark-β method, Wilson-θ method, modal decompo-sition method, HHT method.In the fourth chapter, the basic parameters are obtained using PKPM structure software. then the pushover analysis is excused in PUSH module,obtaining the performance points of this project, the story drift, vertex displacement and so on,which are to meet the relevant re-quirements of "Code for seismic design of buildings"(GB50011-2010).In all,the seismic performance of Structure meets the requirements.Then using EDPA module,The Structure is carried out elastic-plastic dynamic time-history analysis under rare earthquake with three seis-mic waves-the artificial wave RH1TG040and natural wave TH2TG040, TH3TG040. The maximum story drift of the main direction is1/320and The second one is1/523,which both of them are less than the limits1/50in "Code for seismic design of buildings"(GB50011-2010) Section5.5.5on elastic-plastic story drift provision.Finally, SAP2000structural analysis software is used, implementing pushover analy-sis,by applying four kinds of lateral load pattern.All of the results meet the relevant code.