| 条形基础下地基稳定的突变性 |
| |
| 引用本文： | 吴艺,房营光. 条形基础下地基稳定的突变性[J]. 华南理工大学学报(自然科学版), 2005, 33(11): 85-89 |
| |
| 作者姓名： | 吴艺 房营光 |
| |
| 作者单位： | 华南理工大学,建筑学院,广东,广州,510640;华南理工大学,建筑学院,广东,广州,510640 |
| |
| 基金项目： | 广东省自然科学基金资助项目（010054） |
| |
| 摘 要： | 为正确描述与解释地基失稳中的突然破坏现象,采用尖点突变模型理论,对粘土地基上条形基础的稳定性进行了分析,讨论了粘土弱化函数、地基参数、地面超载以及位移二阶效应等对地基稳定性及其突变性质的影响,找出了发生突变破坏的条件.分析结果表明：突变理论可较好地解释地基突然失稳破坏的客观现象;地面超载、土的容重和位移二阶效应均为地基稳定的有利因素.
|
| 关 键 词： | 条形基础 地基 稳定性 极限承载力 突变性 |
| 文章编号： | 1000-565X（2005）11-0085-05 |
| 收稿时间： | 2005-01-20 |
| 修稿时间： | 2005-01-20 |
Catastrophe of Base Stability Under Strip Foundation |
| |
| Wu Yi,Fang Ying-guang. Catastrophe of Base Stability Under Strip Foundation[J]. Journal of South China University of Technology(Natural Science Edition), 2005, 33(11): 85-89 |
| |
| Authors: | Wu Yi Fang Ying-guang |
| |
| Affiliation: | College of Architecture and Civil Engineering, South China Univ. of Tech. , Guangzhou 510640, Guangdong, China |
| |
| Abstract: | In order to correctly describe and explain the sudden failure of a base in stability losing, the stability of the strip foundation on clay base is analyzed by using the theory of cusp-catastrophe model. The effects of the weakening function of clay, the base parameters, the ground overload and the second-order effect of displacement, etc. on the base stability and its catastrophe are discussed, with the catastrophe and failure conditions being finally proposed. Analytical results show that the catastrophe theory fairly well explains the objective phenomenon of sudden stability losing and the failure of a base, and that the ground overload, the soil density and the second-order effect of displacement are advantageous of the base stability. |
| |
| Keywords: | strip foundation base stability ultimate bearing capacity catastrophe |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
