水平地震荷重による薄肉円筒のせん断-曲げ座屈における上下地震荷重の影響の解析的検討

概要

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The seismic response characteristics of thin cylindrical shells under vertical and horizontal seismic excitation, concerning shear-bending buckling, was analytically investigated using two-degree-of-freedom system with non-linear restoring force characteristics. The plastic deformation in horizontal direction advances when the axial compression caused by vertical seismic excitation reduces the horizontal load carrying capacity. Thus the horizontal response amplification occurs due to the vertical seismic excitation. In this report, the response amplification is analytically investigated with different input waves and different cylinder models and the response amplification factor predicted by the linear response spectra of the input waves is proposed.
1998-05-25