PROPOSAL OF A SELECTION METHOD OF STRUCTURAL SUB-MEMBERS FOR PARTITION WALLS MADE OF STACKED ALC-PANELS BASED ON OUT-OF-PLANE NATURAL FREQUENCY

Abstract

In the Great East Japan Earthquake, many large-scale partition walls made of stacked ALC(AAC) panels were damaged. Those walls are constructed with intermediate sub-beams. Strong motion observations and shaking table tests by authors clarified that large vibrations in out-of-plane direction can occur in those walls during earthquakes. A countermeasure to suppress vibrations is to select stiff members enough to keep high frequencies. In this paper, simplified formulas for calculating out-of-plane natural frequencies are established based on the results of shaking table tests. According to the formulas, we propose a practical selection method of structural sub-members as in a tabular form.