Collapse Analysis of Gymnasium Ceiling Using ASI-Gauss Technique



Many accidents of ceiling collapse were observed in the 2011 Great East Japan earthquake and others in Japan. In this paper, a numerical seismic simulation of ceiling collapse in the full-scale gymnasium specimen is conducted. Numerical model consists of steel structural frames and suspended ceiling. All members are modeled by the linear Timoshenko beam elements. The ASI-Gauss technique, which is utilized to shift the numerical integration point adaptively to an appropriate position, is applied to the nonlinear finite element procedure for structurally discontinuous problems. Numerical seismic simulation shows that ceiling collapse progresses due to the detachment of clips attaching ceiling joist to ceiling joist receiver and finally results in falling-down of ceiling.

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