Design And Analysis Of Main Structure Of The Super High-rise Building

With the innovations of architectural design, new structure systems, such as vast framework, vast chassis with multi-towers, and combination of strengthen layer and transition layer, is getting more and more complicated. The key concern to structure design is whether these complex structures in super high-rise buildings can work reliably under wind and earthquake load.As an intern, the author participated in the optimization design for the overrun structure scheme of the shear wall structure supported by a vast framework chassis in the super high-rise commercial-residential building of Wuhan Vanke Group. So, part of the contents reported in this thesis may consist with the optimization design.According to the architectural scheme, the structure design and structure modeling was firstly carried out. In terms of the antiseismic design method based on performance, the antiseismic target of the structure scheme was selected. And then, the response of the structure under frequent and rare earthquake was calculated and the antiseismic performance of the structure was checked. Also, the earthquake response of the contrast structure scheme, which is formed by adding finite rigidity strengthening components at the refuge floor and top floor and thinning the share wall(3~9 floor) in the original structure scheme, was calculated. Finally, the results of the two structure schemes was discussed and compared.The main conclusions are as follows:① As far as the software showed, the earthquake response spectrums in two structures are similar to each other and both results are fallen in standardized form, the calculation has been proved effective.② Elastic time history method were employed to do the supplementary calculations, the calculated results can meet the standard requirements which again proved the validity of mode-superposition response spectrum method. Simultaneously, the results indicate that the structure is in elastic state even in frequent earthquake which can achieve the first seismic performance goals.③ In rare earthquakes, elastic-plastic drift ratio can meet the standard requirements, cracks would appear in the shear walls but the steels didn’t yield and shear failure did not come either, several columns appear elastic hinges and the beams went deep in the elastic deformation though. By summary, the structure can achieve the seismic fortification target of No Collapsing in the Strong Earthquake.④ Compared to the original structure scheme, though a small number of steels in the new structure scheme will be yield in rare earthquakes, the new structure, which is at a lower cost, comprehensively achieve the objective of no damage in small earthquakes, repairable in moderate earthquakes, no collapsing in strong earthquakes.This paper could give certain reference to similar structure designs.