Elasto-plastic Method Analysis Of Shear Wall Structure Of A Building Chassis's Twin Towers Frame In XiFeng District,Qingyang City

With the development of economy, the urbanization of our country has entered into the stage of high speed, the high and super high rise buildings are widely used in all parts of the country, and more and more tall buildings are built. The high-rise buildings have solved the problem of using limited space, but they contain too many floors and people. Once an earthquake, especially the rarely occurred earthquake occurs, it will cause a tremendously influence on the people's lives and properties. So it is very important to evaluate the seismic performance of high-rise buildings and ensure its reliability under earthquake action. Based on the above considerations, the paper studies the seismic performance of frequent earthquake and rare earthquake of shear wall structure of a building chassis' s twin towers frame in Xi Feng District,Qingyang City.In this paper, first, the author respectively summarized the Push-over Analysis and Dynamic Analysis in four aspects, which are the development course, research status, theoretical basis and scope of application. On this base, the author expounds the implementation step and development prospect of the theory; Compares the advantages and disadvantages of Push-over analysis and Dynamic Analysis; Introduces some classical hypothesis and analytical models, and discusses some current problems. Under the condition of frequent earthquake, the structure is analyzed by elastic analysis on small earthquake and elastic time history analysis, also the stress and deformation of the structure are calculated. Next, under the condition of rare earthquake, the author uses Push-over Analysis and Dynamic Analysis to respectively calculate the stress and deformation of the structure. In the end, the author compares the two important indicators to assess the damage. Thus providing a scientifical reference to the aseismic design of the high rise buildings.The results of the thesis are as following, under frequent earthquake, the structure has uniform quality distribution and a small torsion effect. Besides, the stiffness distribution is reasonable, and there is no weak layer. Also the structural elements are not overrun and the structure is not damaged. In a word, it is in elastic state. Under the condition of rare earthquake, the whole floor structure does not collapse, but some elements are damaged. By comparing the Push-over Analysis and Dynamic Analysis, the author finds the bottom structure of the static elastic plastic is obviously destroyed. The structure of each layer is damaged under the dynamic elastic-plastic analysis. Comparatively speaking, the results obtained from the static elastic plastic analysis are larger. In the case of the plastic hinge distribution, the results obtained from the dynamic elastic-plastic analysis are more close to the real situation. On the whole, the structure of No.1 Building in Tianrunjiayuan meets the design concept of "no damage in small earthquake and no fall in big earthquake".