Simulation Analysis of a Super High-Rise Rc Building Using Moment-Resisting Frame System Including Pile Group and Surrounding Soil and Seismic Perfomance Evaluation for Future Scenario Earthquakes

Abstract

During the 2011 Tohoku earthquake super high-rise RC buildings constructed in the coastal area of Tokyo Bay were suffered from strong shaking including long period components with long duration time. This paper describes dynamic behavior of a super high-rise RC building using the moment-resisting frame system mainly focusing on seismic performance of pile group. Earthquake motions recorded at 3 floors in the building during the 3.11 mainshock are well simulated by the 3-D frame model with piles and surrounding soil by using recorded motions obtained at the pile tip depth level. Piles stresses are also investigated considering flexure of foundation beams and past nonlinear behavior. Seismic performance evaluation for the future scenario earthquakes is also discussed mainly focusing on variation of stresses and curvatures of piles.

Input motion inversion in elastoplastic soil model using modal iterative error correction method

“…For the safety assessment of buildings following an earthquake, a simulation analysis is an effective evaluation method for building safety when the structure of the foundation cannot be easily evaluated by visual inspection. In such cases, the input motion needs to be set for the analysis to reproduce the observed earthquake records at a given point in the analysis model based on a record of observations within or around the building (Figure ).…”