[1]何开胜,沈珠江.天然沉积粘土的结构性调查[J].东南大学学报(自然科学版),2002,32(5):818-822.[doi:10.3969/j.issn.1001-0505.2002.05.030]
 He Kaisheng,Shen Zhujiang.Investigation on structural properties of natural sedimental clays[J].Journal of Southeast University (Natural Science Edition),2002,32(5):818-822.[doi:10.3969/j.issn.1001-0505.2002.05.030]
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天然沉积粘土的结构性调查()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第5期
页码:
818-822
栏目:
土木工程
出版日期:
2002-09-20

文章信息/Info

Title:
Investigation on structural properties of natural sedimental clays
作者:
何开胜 沈珠江
南京水利科学研究院土工研究所,南京 210024
Author(s):
He Kaisheng Shen Zhujiang
Department of Geotechnical Engineering, Nanjing Hydraulic Research Institute, Nanjing 210024,China
关键词:
结构性土 重塑土 自然沉积 压缩曲线 孔隙指数
Keywords:
structural clays reconstituted soil natural sediment compression curve void index
分类号:
TU411.92;TU411.93
DOI:
10.3969/j.issn.1001-0505.2002.05.030
摘要:
调查了天然沉积粘土的结构性(组构和胶结)、结构强度、表述方法以及与重塑土的差异.用孔隙指数来归一化天然粘土的沉积压缩曲线、重塑土的压缩曲线和固结仪压缩曲线,可以很清晰地揭示出结构性土与重塑土的内在差别、固结仪试验中土体结构性的渐进破坏过程.重塑土反映了土体与自然状态无关的“固有特性”,它提供了一个评估原位自然沉积粘土特性的参考构架.大多数天然粘土的沉积压缩曲线位于重塑土固有压缩曲线的上方,其位置取决于沉积条件和沉积后的作用.有结构性的天然沉积土与无结构性的重塑土性状迥然不同,只有建立反映土结构性的本构模型才能真正描述其性状.
Abstract:
The structure(fabric and bond)and structural strength of natural sedimental clays, and the difference and describing methods between natural clays and reconstituted clays are investigated. The sedimentation compression lines of natural clays, intrinsic compression lines of reconstituted clays and oedometer compression curves can be normalized by a void index, then the difference of the structural clays and reconstituted clays as well as the gradual damage course of soil structure are showed apparently. The reconstituted clays represent the soil intrinsic properties independent of the natural state, and provide a reference frame which can be used to evaluate the properties of in-situ sedimentation clays. Most sedimentation compression lines are located above the intrinsic compression lines; their locations depend on the sedimentation condition and the action after sedimentation. Considering the widely different between natural clays and reconstituted clays, only the structured constitutive model can describe the properties of natural clays other than present model from reconstituted clays.

参考文献/References:

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相似文献/References:

[1]曾玲玲,刘松玉,洪振舜.天然沉积结构性土的EOP压缩特性[J].东南大学学报(自然科学版),2010,40(3):604.[doi:10.3969/j.issn.1001-0505.2010.03.032]
 Zeng Lingling,Liu Songyu,Hong Zhenshun.EOP compression characteristics of natural structural clays[J].Journal of Southeast University (Natural Science Edition),2010,40(5):604.[doi:10.3969/j.issn.1001-0505.2010.03.032]

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(19772019).
作者简介: 何开胜(1963—),男,博士,高级工程师,kshe@njhri.edu.cn; 沈珠江,男,教授,博士生导师,中科院院士,zjshen@njhri.edu.cn.
更新日期/Last Update: 2002-09-20