摘要
将壁板桩桩身水平位移用有限级数函数表示,地基土体的荷载位移关系用Mindlin点对点的位移解表示,同时考虑桩前水平土阻抗力和桩侧水平摩阻力沿桩周分布的不均匀性,采用双重高斯数值积分法将基于变分原理建立的壁板桩群桩体系的总势能展开为简单的矩阵形式方程,并根据最小势能原理得到水平受荷壁板桩群桩荷载位移关系的显式解答。与三维有限元方法计算结果的对比验证了所提出解答的合理性。
Based on the variational principle, the total potential energy of a general group of laterally loaded barrettes is established, By using the Gauss double numerical integration method, it is expanded to a simple equation of matrix form, in which a finite series is used to denote the lateral displacement of barrette shaft, Mindlin＇s point-to-point displacement solution is applied to describe the force-displacement relationship of ground soils; and allowance is made for the nonuniform distributions, of both the lateral soil resistance at the front of and the lateral shaft resistance on the sides of the barrette shaft, along the perimeter of the barrette. In light of the principle of minimum potential energy, an explicit solution is obtained for the load-displacement relationship of laterally loaded barrette groups. The proposed solution is verified from the comparisons of the calculated results made with the three-dimensional finite element method.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2008年第2期303-309,共7页
Rock and Soil Mechanics
基金
教育部留学回国人员科研启动基金(No.20030183025)
关键词
水平受荷壁板桩
变分法
群桩
荷载位移关系
laterally loaded barrette
variational method
pile group
load-displacement relationship
