铁道标准设计2016，Vol.60Issue(6)：106-112,120,8.DOI:10.13238/j.issn.1004-2954.2016.06.022
圆形及矩形基础非均质地基极限承载力数值分析
Numerical Analysis of Bearing Capacity of Non-homogeneous Foundation for Circular and Rectangular Footings
摘要
Abstract
Soft cohesive soil foundations are widely distributed in developed regions in our country. In recent years, as a large number of ultra-high, over-limit buildings and facilities such as high-speed railway are under rapid construction, a deeper understanding of the ultimate bearing capacity and failure mechanism of this kind of foundation is required. Three-dimensional numerical analysis model is established with finite difference method to analyze the ultimate bearing capacity and failure mechanism of cohesive non-homogeneous foundation under rectangular and circular footings. Analysis results show that with the increase of the uneven coefficient of the strength of cohesive soil, the ultimate bearing capacity increases. The roughness of base affects the bearing capacity coefficient. Shape factors of rectangular and circular footings decrease when the uneven coefficient of the strength of cohesive soil increases. The bearing capacity of the rectangular footing with numerically calculated length/width ratio of 10 equals that of rectangular footing.关键词
非均质/黏性土/矩形基础/圆形基础/极限承载力Key words
Non-homogeneous foundation/Cohesive soil/Rectangular footing/Circular footing/Ultimate bearing capacity分类
建筑与水利引用本文复制引用
郑帅群,周海祚,郑刚..圆形及矩形基础非均质地基极限承载力数值分析[J].铁道标准设计,2016,60(6):106-112,120,8.基金项目
国家自然科学基金项目(51378345) （51378345）
