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《南水北调与水利科技》:软土次固结变形特性的试验研究(常青,余湘娟)(摘要)

发布时间:2022-02-22 15:14:55 浏览数:
 

摘要:对原状和重塑软土做了大量的分级加载室内一维次固结试验研究。结构表明,荷载对次固结变形特性有着较明显的影响,并对其关系进行了探讨;原状土和重塑土有着相似的次固结变形规律,在相同荷载作用下的重塑土的次固结系数比原状土的次固结系数小;对室内试验结果用最小二乘法拟合出次固结系数与压力之间的关系,得出其关系表达式,为实际地基的次固结变形的计算提供参考。

 

关键词:软土;次固结;次固结系数;正常固结状态

 

中图分类号:TU411 文献标识码:B 文章编号:1672-1683(2008)01-0148-03

 

Secondary Consolidation Deformation on Soft Soil

CHANG Qing1,YU Xiang-juan2

 

(1.The Research Centre of Engineering Technology of Water Diversion,Jinan 250013;

 

2.Research Institute of Geotechnical Engineering,Hohai University,Nanjing 210098,China)

 

Abstract:The 1D secondary consolidation tests of soft soils of undisturbed and disturbed through step loading has been carried out.The results show that secondary compression obviously relates to load.Coefficient of secondary consolidation increases with load and their relations are discussed;the rules of undisturbed soils are the same with these of disturbed soils,the coefficient of secondary consolidation of disturbed soils under the same load is less than that of undisturbed soils;Based on the laboratory tests results,the relations of coefficients of secondary consolidation and loads are given by least square method.

 

Key words:soft soil;secondary consolidation;coefficient of secondary consolidation

 

参考文献:

 

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作者简介:常青(1976-)女,山东聊城人,硕士,主要从事软土地基处理和基础工程方面的研究。

 

来源:《南水北调与水利科技》2008年第1期

     相关热词搜索: 固结 南水北调 变形 水利 特性