| Title |
Geometrically Nonlinear Analysis Considering P-Δ Effect for High-rise Wall-Frame Structures with Outriggers |
| Authors |
Park Dae-Kyu ; Kim Jin-Man ; Lee Jae-Hong |
| Keywords |
Wall-frame ; Outrigger ; Shear-flexural Cantilever ; Nonlinear Analysis ; P-Δ Effect |
| Abstract |
In this paper, the P-Δ behaviour of coupled shear wall-frame systems is analyzed. The governing equations of the wall-frame systems with outrigger trusses are formulated through the continuum approach. then the whole structure is idealized as a shear-flexural cantilever with rotational spring. The effect of shear and flexural deformation of the wall-frame and outrigger trusses are considered and incorporated in the formulation of the governing equations. Geometric nonlinearity is included in sense if von Karman, and the analytical results. nonlinear analysis of the wall-frame structures with and without outriggers are performed by using finite element analysis incorporated with Newton-Raphson method. The proposed method is found to be simple and efficient, provides reasonably accurate results in the early design stage of tall building structures. |