| The high-rise building over 250 meters in china has reached 103. With the height of high-rise buildings continuing to make breakthroughs, the structure form become more and more complex, which brings new challenges for wind resistant design and seismic design of the structure. The difficulty of structure design increased a lot It is necessary to explore the elastic-plastic performance and failure mechanism of the structure.Frame-core tube structure is a commonly used structure for high-rise building. The core tube of the structure with large stifness can bear wind and seismic action and the steel frame or steel reinforced concrete frame of the structure can bear vertical loads. This combination can fully exploit the advantages of two materials. This paper designed a 262.35-meter high-rise building of SRC frame-core tube structure with reinforcing layers. The main contents of this paper are as follow.(1) Design a high-rise building with 63 layers according to relevant regulations, including structural layout, vertical functional partitioning, estimating the size of the structural members(2) Structure beyond code limits analysis including height and aspect ratio, plane irregularity vertical irregularity.(3) Structural elastic response spectrum analysis by using Midas building and SATWE software. Compare the results the two software calculated, including structure mass, period, displacement, shear weight ratio, etc. to insure the analysis is reasonable. Select three small earthquakes to do elastic time history analysis of the structure and compare the results with elastic response spectrum method.(4) Using PUSH program doing static elastic-plastic analysis of the structure under rare earthquake. Analyze the performance point and plastic hinge development in the loading process.(5) Using YJK-EP program doing dynamic elastic-plastic time history analysis under rare earthquake. Analyze the dynamic response and damage distribution of the structure under rare earthquake. |
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