湖南大学学报（自然科学版）2012，Vol.39Issue(8)：14-18,5.
剪切波作用下桩筏基础的动力响应研究
Kinematic Response of Pile-raft Foundation to Vertical S-wave Seismic Excitation
摘要
Abstract
A numerical study on the kinematic, responses of pile-raft foundation subjected to vertically propagating S-wave seismic excitation was presented. The dynamic soil-pile-raft interaction was modeled by using the thin layered element method and the finite element method. The effective input motions of pile-raft foundation were expressed with dimensionless horizontal response factor IH and rocking response factor IR, which were the ratios of raft motions to free-field soil surface motion. The horizontal and rocking response factors of pile-raft foundation were compared with those of pile group and raft foundation. The effects of pile lengths, spacings and rigidities on kinematic response factors of pile-raft foundation were also studied. The results have shown that the neglect of the effect of the raft can result in too small an evaluation of the kinematic response factors of pile-raft foundation when the pile spacing is relatively large.关键词
土-结构相互作用/水平动力响应/桩筏基础/有效输入地动Key words
soil structure interactions/ kinematic response/ pile-raft foundation/ effective input motion分类
建筑与水利引用本文复制引用
文学章,尚守平..剪切波作用下桩筏基础的动力响应研究[J].湖南大学学报（自然科学版）,2012,39(8):14-18,5.基金项目
高等学校博士学科点专项科研基金资助项目(20090161120003) （20090161120003）
湖南大学"中央高校基本科研业务费专项资金"资助项目 （）
