岩土工程学报2017，Vol.39Issue(7)：1165-1172,8.DOI:10.11779/CJGE201707001
竖向荷载作用下散体地基应力解析方法
Analytical method for stress of granular medium foundation under vertical load
摘要
Abstract
The analytical method for stress of foundation under vertical load is an important basis of design and computation infoundation engineering. However, the existing methods cannot reflect the properties of granular media for foundation soils.Therefore, according to the current researches on stress transmission of granular media, firstly, supposing that the stress in agranular medium foundation under vertical point load always diffuses downward with a curve cone, an analytical problem forthe stress of the granular medium foundation under vertical point load is converted into that of a curve cone under vertical pointload at its top, and a stress-solving method for a curve cone is obtained by discussing the stress-solving method for a line cone,hence, an analytical method for the stress of the granular medium foundation under vertical point load is proposed. Then, ananalytical method for the stress of the granular medium foundation under circular vertical uniform load is established byregarding the problem as the integral solution of the stress of the granular medium foundation under vertical point load, whichcan adequately report the characteristics of the granular media of foundation soils and shows obvious superiority to theBoussinesq solution. Finally, by simultaneously adopting the proposed analytical method and Boussinesq solution as well as thenumerical analytical method with PFC3D, a comparative analysis of stress distribution in granular medium foundation undercircular vertical uniform load is carried out, and it is indicated that the proposed method is reasonable and feasible.关键词
散体地基/竖向集中荷载/圆形竖向均布荷载/应力传递/Boussinesq解/颗粒流数值分析Key words
granular medium foundation/vertical point load/circular vertical uniform load/stress transmission/Boussinesq solution/numerical analysis with PFC3D分类
建筑与水利引用本文复制引用
曹文贵,贺敏,王江营..竖向荷载作用下散体地基应力解析方法[J].岩土工程学报,2017,39(7):1165-1172,8.基金项目
国家自然科学基金项目(51378198,51508039) （51378198,51508039）
高等学校博士学科点专项科研基金项目(20130161110017) （20130161110017）
