【摘要】 基于动力有限元反应分析,对存在于建筑物下的非自由场地的液化特性进行了研究。通过多种工况的计算,探讨了建筑物刚度、宽度和荷载大小对液化区分布的影响。以往一般认为建筑物下的砂土难于液化,而由计算结果及分析,可先实际情况并非这样简单。建筑物基底以下存在易于液化的"V"字型区域,该区域形态与建筑物的刚度、宽度和荷载大小都有密切关系。更多还原

【Abstract】 For unfree ground with existing building,the sandy soil liquefaction potential under earthquake is studied by using numerical dynamic response analysis. The influence of building stiffness,width and building weight on liquefaction zone distribution is investigated through various conditions of calculation. In conventional cognition,the sand under building is difficult to liquefy. However,it is demonstrated by this numerical calculation that the actual situation may not always be always so simple. A zone with the shape of character "V" under building shows high potential of liquefaction,and is closely related to the building stiffness,width and building weight.更多还原