| Structural lateral displacement becomes the main control index during the high-rise building structure designs.When the frame-corewall structure is not so rigid, the refuge storey and facility storey should be used to form the reasonable horizontal outriggers, so as to the high-rise binding having strengthened stories. It is an effective way to decrease structural lateral displacement against the influence of wind by setting the horizontal strengthened stories.When come to the influence of earthquake, this designs will cause the sudden variation of structural stiffness and internal force, and will come into being weal storey, which will make it difficult for the yield mechanism of the structure to carry out its extending bending system.This kind of structural system have been used more and more in recent years, because setting horizontal strengthened stories have made better economy and structural effect in practice.The thesis applying the 3-D FEA software SAP2000 and SATWE conducts the means of response spectrum analysis ,based on a typical frame-corewall structure that has several different structural araangements of the strengthened stories, The structure period, displacement and internal force of this kind of structure are studied. The reasons have been analysed about the change of internal forces in structure after putting horizontal strengthened stories.The static push-over analysis of the frame-corewall structure with outriggers puts up, It finds out the possible position of stress converging and the ream output sequence ,also finds out some stories weakness, Thus the anti-earthquake quality of the structure can be improved by strengthening the restrictive structural corrugated steel bar in the weak parts. The principles of reasonnable setting and construction measures of the frame-corewall structure with outriggers are presented in the seismic region, which bring some effective basis to the similar high-rise buildings and skyscrapers in the seismic design. |
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