Nonlinear Seismic Response Analysis of RAC Space Frame Structure

Abstract:

An OpenSees computational platform-based 3-dimentional space RAC finite element model is established for reproducing the seismic response of a 1/4 scaled 6-story, 2-bay and 2-span RAC frame model regular in elevation that was tested on shaking table under a series of one-dimensional base excitations with gradually increasing acceleration amplitudes. The dynamic characteristic parameters of the numerical model, including natural frequencies and vibration modes are captured by performed modal analysis. The acceleration response, the maximum storey displacements and the inter-storey drifts are carefully predicted by performed dynamic time history analysis. Very satisfactory agreement between experimental and analytical results is observed. The numerical simulation verifies that the beam-column element type, the section model, the confined concrete model, the steel material model, and the numerical methods used for the proposed model are reasonable.

• Periodical: Applied Mechanics and Materials (Volumes 405-408)
• Pages: 1046-1050
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.405-408.1046
• Online since: September 2013
• Authors: Chang Qing Wang*
• Keywords: Dynamic Nonlinear Analysis, OpenSEES, Recycled Aggregate Concrete (RAC), Seismic Behavior, Shaking Table Test

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