A new method for second-order effect analysis on spacial mega frame of super tall buildings due to both horizontal and vertical loadings

作者：Bao Shi Hua^*; Gong Yao Qing

来源：Chinese Journal of Computational Mechanics, 2010, 27(1): 40-46.

• Elastic subgrade
• Mega-frame
• Second order effect
• Super tall buildings
• Three dimensional beam
• Winkler

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.

• 出版日期2010
• 单位清华大学