中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

重庆交通大学学报(自然科学版) ›› 2016, Vol. 35 ›› Issue (1): 70-75.DOI: 10.3969/j.issn.1674-0696.2016.01.14

• 道路与铁道工程 • 上一篇    下一篇

高填方路堤软弱地基的承载力分析

朱分清1,陈群2   

  1. 1. 中铁二院工程集团有限责任公司 公路与市政设计研究院,四川 成都 610031;2. 四川大学 水利水电学院 水力学与山区河流开发保护国家重点实验室, 四川 成都 610065
  • 收稿日期:2014-09-21 修回日期:2014-11-10 出版日期:2016-02-20 发布日期:2016-04-21
  • 作者简介:朱分清(1972—),男,安徽枞阳人,高级工程师,硕士,主要从事高速公路、市政道路的设计和研究工作。E-mail: fqzhu@163.com。

Bearing Capacity Analysis on Soft Foundation of High Embankment

ZHU Fenqing1, CHEN Qun2   

  1. 1. Road & Municipal Design and Research Institute, China Railway Eryuan Engineering Group Co.,Ltd., Chengdu 610031, Sichuan, P.R.China; 2. State Key Laboratory of Hydraulics and Mountain River Engineering, College of Water Resource & Hydropower, Sichuan University, Chengdu 610065, Sichuan, P.R.China
  • Received:2014-09-21 Revised:2014-11-10 Online:2016-02-20 Published:2016-04-21
  • Contact: 陈群(1972—),女,重庆云阳人,教授,博士,博士生导师,主要从事土力学的教学和科研工作。E-mail: chenqun@scu.edu.cn。

摘要: 利用应力和孔隙水压力耦合的方法对路堤填筑过程中地基的孔隙水压力分布进行研究。在分析地基中孔隙水压力变化规律的基础上,利用极限平衡方法对地基的稳定性进行分析,探讨 了上部荷载以及超孔隙水压力对地基中潜在滑动面形状、位置以及地基极限承载力的影响,提出了高填方路堤软弱地基承载力的合理计算方法。利用此方法研究了路堤下地基极限承载力随强 度参数的变化规律,结果表明:软土地基的承载力随黏聚力和内摩擦角的增大而近似线性增大。

关键词: 道路工程, 承载力, 耦合分析, 软弱地基, 路堤

Abstract: The distribution of the pore water pressure in the foundation during embankment construction was studied by using stress-pore water pressure coupling method. Based on the analysis on the change rule of the pore water pressure in the foundation, the stability of the foundation was analyzed by the limit equilibrium method. The influence of the upper load and extra pore water pressure on the shape and location of the slip surface in the foundation and the ultimate bearing capacity was discussed. A reasonable method for calculating the bearing capacity of the soft foundation of high embankment was proposed. The rule of the ultimate bearing capacity of the foundation changing with different strength parameters of embankment was studied by the proposed method. The results show that the ultimate bearing capacity is approximately increased linearly with the increase of the cohesion and the internal friction angle of the soft soil foundation.

Key words: highway engineering, bearing capacity, coupling analysis, soft foundation, embankment

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