| 结构性软土力学特性试验研究 |
| |
| 引用本文： | 陈晓平,曾玲玲,吕晶,钱鹤,邝立文.结构性软土力学特性试验研究[J].岩土力学,2008,29(12):3223-3228. |
| |
| 作者姓名： | 陈晓平 曾玲玲 吕晶 钱鹤 邝立文 |
| |
| 作者单位： | 暨南大学力学与土木工程系,广州,510632 |
| |
| 基金项目： | 广东省科技计划项目
，
湖北省环境岩土工程重点实验室开放基金
|
| |
| 摘 要： | 选取广州南沙典型软土为研究对象,进行了剪切、无侧限抗压、固结等室内试验.从强度和变形两方面对试样的结构性进行了研究,分析了原状土和重塑土的变形特性、强度特性和固结特性,揭示了所研究的区域性软土的结构性特征以及这一特征对软土工程性质的影响.试验结果表明:结构性软士经扰动后强度明显降低,压缩性增加;原状土的同结特性与结构屈服压力有关,压缩曲线呈现3阶段特征.在同一级荷载下扰动后的土体变形规律较原状土有更明显的主次固结划分界限.结构屈服压力是变形规律的控制因素之一,可以通过压缩系数-固结压力曲线近似确定.试验结果还表明,当崮结压力较大时,原状土的结构被完伞破坏,此时结构性对土体力学特性的影响可被削弱,甚至消失.
|
| 关 键 词： | 结构性黏土 固结试验 屈服压力 |
| 收稿时间： | 2007-02-14 |
Expeimental study of mechanical behavior of structured clay |
| |
| CHEN Xiao-ping,ZENG Ling-ling,LV Jing,QIAN He,KUANG Li-wen.Expeimental study of mechanical behavior of structured clay[J].Rock and Soil Mechanics,2008,29(12):3223-3228. |
| |
| Authors: | CHEN Xiao-ping ZENG Ling-ling LV Jing QIAN He KUANG Li-wen |
| |
| Institution: | Department of Mechanics and Civil Engineering, Jinan Universty, Guangzhou 510362, China |
| |
| Abstract: | Based on a series of laboratory tests on soft soil in Nansha,Guangzhou,involving direct shear test,unconfined compression test,consolidation test,the structural characteristics of the regional soft soil are studied.By using undisturbed and remoulded soil samples,shear deformation,shear strength and consolidation properties of the structured clay which indicate the significant structure of the soil and the effect on engineering property are analysed.The test results show that the shear strength of disturbed ... |
| |
| Keywords: | structured clay consolidation test yield stress |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《岩土力学》浏览原始摘要信息 |
| 点击此处可从《岩土力学》下载免费的PDF全文 |
|
