›› 2016, Vol. 30 ›› Issue (2): 201-204.

• 工程实录 • 上一篇    下一篇

基于三轴试验的南水模型参数的确定方法

侯贺营 1,蒋敏敏 1,蔡正银 1,2   

  1. (1.河南工业大学土木建筑学院,郑州 450001; 2.南京水利科学院研究院,南京 210024)
  • 收稿日期:2015-08-30 出版日期:2016-04-20 发布日期:2016-04-27
  • 作者简介:侯贺营(1988-),男,在读硕士,研究方向为岩土工程。

NHRI Model Parameters Determination Using Triaxial Tests

HOU Heying1, JIANG Minmin1, CAI Zhengyin1,2   

  1. (1.College of Civil Engineering and Architecture, Henan University of Technology, Zhengzhou 450001;
    2.Nanjing Hydraulic Research Institute, Nanjing, Jiangsu 210024)
  • Received:2015-08-30 Online:2016-04-20 Published:2016-04-27

摘要: 土的本构模型是反映土体应力-应变关系的数学表达式。南水模型是弹塑性模型中的一种,其综合了邓肯-张模型和剑桥模型的优点,并采用多重屈服面,克服了邓肯-张模型和剑桥模型不能模拟围压或平均压力不断减小的应力路径的缺点。简单介绍了南水模型的屈服方程及其参数的推导过程,介绍了获得郑州地区主要土层的南水模型参数的方法:首先对郑州地区的粉土进行饱和,然后利用三轴剪切仪对其进行三轴剪切试验,通过对试验数据的整理与分析,确定南水模型的参数。

关键词: 南水模型, 三轴试验, 饱和粉土

Abstract: The NHRI constitutive model is one of the elasticplastic models, which utilizes the advantages of DuncanChang model and Cambridge model. The model has multiple yield surfaces and improves the disadvantage existed in the DuncanChang and the Cambridge model, in which they cannot simulate the stress path under a decreasing confining pressure. This paper presents the model determination of saturated silty soils by using the triaxial tests.

Key words: The NHRI Constitutive Model, Triaxial Tests, Saturated Silt