湖南大学学报（自然科学版）2018，Vol.45Issue(3)：129-135,7.DOI:10.16339/j.cnki.hdxbzkb.2018.03.016
高陡横坡段桩柱式桥梁双桩基础受力分析
Force Analysis of Bridge Double-piles Foundation in High and Steep Cross Slopes
摘要
Abstract
An improved finite bar element method was developed to analyze the bridge double-piles in high and steep cross slopes based on the characteristics of their bearing capacity.Firstly,an analysis model of double-piles was derived after thoroughly analyzing their bearing mechanism and deformation character-istics.Secondly,the relationship between the residual sliding forces of back pile and front pile was ob-tained according to the relative position of slope and double-piles.Thirdly,a method was proposed to cor-rect the element stiffness matrix on the basis of general finite element method and mechanics characteristic of piles in high and steep slopes,taking the influence of the"P-Δ"effect and the pile-soil interaction into account,and a corresponding computation program was compiled on the platform of MATLAB.Lastly,a laboratory model test was carried out to verify the validity of the method in this paper,and a design flow chart was proposed.The results show that the computed results are in good agreement with the measured results in model test,thus offering experience for similar engineering.关键词
桥梁工程/桩基础/高陡横坡/桩-土相互作用/有限单元法Key words
bridge engineering/pile foundations/high and steep cross slope/pile-soil interaction/fi-nite element method分类
建筑与水利引用本文复制引用
杨超炜,赵明华,陈耀浩,尹平保..高陡横坡段桩柱式桥梁双桩基础受力分析[J].湖南大学学报（自然科学版）,2018,45(3):129-135,7.基金项目
国家自然科学基金资助项目(51278187,51408066),National Natural Science Foundation of China(51278187,51408066) （51278187,51408066）
