摘要
通过商用有限元软件ABAQUS,建立桩—筒组合基础的有限元模型。对土体塑性本构模型进行修正,使其适应循环荷载作用下土体的强度衰减规律。模拟桩—筒组合基础在水平荷载作用下响应,分别研究桩—筒组合基础在静力作用下的承载力和在循环荷载作用下的承载力衰减。筒径对桩—筒组合基础的静力承载力和循环荷载作用后的承载力衰减影响均大于筒高。
A commercial FEM software ABAQUS was used to establish the FEM model of the pile-bucket composite foundation.The plastic constitutive model of soil is modified to adapt to the law of strength attenuation of soil under cyclic loading.The pile-tube composite foundation is simulated to respond under the horizontal load,and the bearing capacity of the pile-bucket composite foundation under static load and the bearing capacity attenuation under cyclic load are studied separately.The influence of the tube diameter on the static bearing capacity and the bearing capacity attenuation of the combined pile-bucket foundation after cyclic loading is greater than the tube height.
作者
王晓强
Wang Xiaoqiang(Zhejiang University of Technology,Hangzhou 310012,China)
出处
《山西建筑》
2020年第8期61-63,共3页
Shanxi Architecture
关键词
桩—筒组合基础
ABAQUS
承载力衰减
累积位移
pile-bucket composite foundation
ABAQUS
bearing capacity attenuation
cumulative displacement
