地形と略算固有周期による建物基礎地震被害の分類 : 阪神淡路大震災の事例について

概要

論文の詳細を見る
75 cases of damage to building foundations, most of which are pile foundations, are arranged according to building or ground natural period estimated from building height or soil profile respectively in the area of the Hanshin-Awaji quake disaster. In the first place, it is shown that the estimated natural period of building T is consistent with long period, _LT_e calculated from 26 detailed samples which contain informations on rigidity and mass of the buildings and that the short period, _sT_e corresponds to 0.6T. Reclaimed land is separated from other soils at 0.3 or 0.4 sec. of estimated ground period, T_g. There are many cases of damage to foundations in the period of 0.4T<T_g<_LT_e in alluvial fans of "Disaster Band". In the period of T_g<0.4T, building skeleton damage is found. Those building periods are 0.6sec-0.9sec. T_g=0.4T is characteristic line. There are typical cases of damage according to ground slip in hills and damage to piles according to liquefaction and flow of soils in reclaimed land.
社団法人日本建築学会の論文
2006-08-30