|本期目录/Table of Contents|

[1]周茗如,王晋伟,王 腾,等.黄土塬非饱和黄土增湿变形特性及结构性研究[J].建筑科学与工程学报,2017,34(01):99-104.
 ZHOU Ming-ru,WANG Jin-wei,WANG Teng,et al.Study on Moistening Deformation Characteristic and Structure of Unsaturated Loess in Loess Tableland[J].Journal of Architecture and Civil Engineering,2017,34(01):99-104.
点击复制

黄土塬非饱和黄土增湿变形特性及结构性研究(PDF)
分享到:

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
34卷
期数:
2017年01期
页码:
99-104
栏目:
出版日期:
2017-01-19

文章信息/Info

Title:
Study on Moistening Deformation Characteristic and Structure of Unsaturated Loess in Loess Tableland
作者:
周茗如王晋伟王 腾杨 鑫
兰州理工大学西部土木工程防灾减灾教育部工程研究中心
Author(s):
ZHOU Ming-ru WANG Jin-wei WANG Teng YANG Xin
Western Engineering Research Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology
关键词:
黄土塬地区非饱和黄土结构特性增湿试验
Keywords:
loess tableland area unsaturated loess structural characteristics moistening test
分类号:
-
DOI:
-
文献标志码:
A
摘要:
为了研究黄土塬地区非饱和黄土增湿变形特性及其与结构性的关系,选取庆阳市西峰区某建筑场地土样,对其进行了不同含水率下的黄土固结试验研究,讨论了湿陷系数与压力、初始含水率及初始结构强度的关系。结果表明:不同浸水压力作用下,湿陷系数随初始含水率的增大基本呈现递减趋势;高压力处增湿湿陷性强,低压力处增湿湿陷性弱;黄土结构强度随初始含水率的增大呈降低趋势,且在含水率增大初期,黄土结构强度降低速率较大,后期速率减缓;黄土湿陷前后土体的微结构发生了明显变化,形成了较稳定的次生结构。
Abstract:
In order to study the moistening deformation characteristics of unsaturated loess in loess tableland area and its relation to structure, the soil samples of a building site in Xifeng district of Qingyang city were selected to study the loess consolidation under different water contents. The relations between collapsibility coefficient and pressure, initial moisture content and initial structural strength were discussed. The study results show that the collapsibility coefficient has a decreasing trend with the increase of initial water content under different soaking pressures. The humectation collapsibility is strong with high pressure, and weak with low pressure. The structural strength of loess decreases with the increase of initial water content. The structural strength of loess decreases quickly at the early stage of water content increasing, and decreases slowly at later stage. The microstructure of loess soil has changed obviously after collapsibility, and a more stable secondary structure is formed.

参考文献/References:

相似文献/References:

备注/Memo

备注/Memo:
更新日期/Last Update: 2017-01-20