摘要
以蓟县某山地建筑为工程背景,利用ABAQUS建立了岩质边坡地基-箱基-上部结构整体三维实体模型,并且建立了无限元边界,通过输入不同方向地震波研究了岩质边坡地基-箱基-上部结构的位移响应.结果表明,对于山地框架结构,竖向地震单独作用下对水平位移的影响较大,而水平和竖向地震耦合作用时竖向地震对水平位移影响较小,基本上与水平地震单独作用下的响应相同;对于台阶形箱基,水平和竖向地震耦合作用时各层最大层间位移与单向水平地震作用下的各层层间位移相比,变化趋势刚好相反,说明竖向地震波的存在对箱基层间位移的影响不可忽视.
In this paper, against the engineering background of a mountain building in county Ji, a 3D entity model of the rock slope foundation-box foundation-superstructure and the infinite element boundary are established by using ABAQUS, and the displacement response of it is studied by inputting seismic waves from different directions. The results show that for a frame structure in the mountains, a single vertical earthquake has great influence on the horizontal displacement, whereas the vertical earthquake＇s influence on the horizontal displacement is smaller on the condition of the horizontal and vertical seismic coupling, roughly the same with a single horizontal seismic response. For a multi-step box foundation, the maximum horizontal displacement between layers in the horizontal and vertical earthquake coupling has opposite variation trend with one-way horizontal seismic action. It indicates that the influence of the vertical seismic wave on the horizontal displacement between layers of the box foundation can not be ignored.
出处
《天津城建大学学报》
2014年第3期159-165,185,共8页
Journal of Tianjin Chengjian University
基金
天津市自然科学基金项目(13JCYBJC19600)
