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| A new method for second-order effect analysis on spacial mega frame of super tall buildings due to both horizontal and vertical loadings |
| Received:August 10, 2007 Revised:November 16, 2008 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20101007 |
| KeyWord:spacial mega frame of super tall building three dimensional press-column with shear-typed elastic basement second-order effect analysis three dimensional beam with Winkler elastic subgrade |
| Author | Institution |
| 包世华 |
清华大学 土木工程系,北京 |
| 龚耀清 |
河南理工大学 土木工程学院,焦作 |
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| Abstract: |
| A new simplified analytical method is presented for second-order effect analysis on the space mega frame of super tall buildings, which simplifies a spacial mega frame as an assemblage of its mega press-columns with shear-typed elastic subgrade obtained by bending rigidity of the subsidiary frames within the mega frames, and mega girders with Winkler-typed elastic basement provided by the axial stiffness of their accessorial columns. And then the member stiffness matrix of the simplified mega press-column as well as the simplified mega girder was formulated, respectively. Consequently, the second-order effect analysis was performed. It is observed through computing example that the simplified analytical method will supply a reasonable and feasible computing approach for the second-order effect analysis of spacial mega frame of super tall buildings. |