考虑状态含水率和密度的膨胀土膨胀模型试验研究

›› 2011, Vol. 32 ›› Issue (S1): 397-0402.

考虑状态含水率和密度的膨胀土膨胀模型试验研究

黄斌^{1, 2}，饶锡保^{1, 2}，王章琼³，谭凡^{1, 2}

1. 长江科学院土工研究所，武汉 430010；2. 长江科学院水利部岩土力学与工程重点实验室，武汉 430010； 3. 中国地质大学（武汉）研究生院，武汉 430074

收稿日期:2010-12-27 出版日期:2011-05-15 发布日期:2011-05-16
作者简介:黄斌，男，1981年生，硕士，工程师，主要从事特殊土工程性质及土动力方面的研究
基金资助:
国家＂十一五＂科技支撑计划重点项目＂膨胀土地段渠道破坏机理及处理技术研究＂（No. 2006BAB04A10）

Experimental study of expansion model of expansive soil considering state water content and density

HUANG Bin^{1, 2}, RAO Xi-bao^{1, 2}, WANG Zhang-qiong³, TAN Fan^{1, 2}

1. Geotechnical Division, Yangtze River Scientific Research Institute, Wuhan 430010, China; 2. Key Laboratory of Geotechnical Mechanics and Engineering of Ministry of Water Resources, Wuhan 430010, China; 3. Graduate School, China University of Geosciences, Wuhan 430074, China

Received:2010-12-27 Online:2011-05-15 Published:2011-05-16

摘要/Abstract

摘要： 以邯郸强膨胀土为研究对象，通过室内K0应力状态膨胀试验，研究了膨胀土的膨胀率与压实度、初始含水率、上覆荷载之间的关系，进而建立了考虑上述3种影响因素的膨胀率公式。同时，建立了终了含水率与初始含水率、压实度、上覆荷载之间的关系，从而得到了膨胀土线膨胀系数表达式。利用提出的膨胀模型可以得出任一含水率状态下膨胀土的膨胀本构关系。该试验操作简单，模型表达式简洁，具有较强的实用性，可为膨胀土工程的设计施工提供理论依据和参考

关键词: 膨胀土, 膨胀模型, 状态含水率, 有荷膨胀率

Abstract: The relationships between compactness, initial water content, cover load and expansion rate have been studied through expansion experiments at the state of K0 stress for Handan strong expansive soil. Then a constitutive model of expansive soil which considered the effects of these three factors is set up. The relationship between ultimate water content, compactness, initial water content and cover load is also set up. Finally, a constitutive equation for linear expansion coefficient of Handan strong expansive soil is proposed. It takes compactness, initial water content, cover load and ultimate water content as variables. With this constitutive equation, constitutive relation of any water content can be obtained. The experiments and expression of this model are relatively simple and of certain practical use. This model can provide theoretical basis and reference for design and construction.

Key words: expansive soil, expansion model, state water content, loaded expansion ratio

中图分类号:

TU 431

黄斌，饶锡保，王章琼，谭凡. 考虑状态含水率和密度的膨胀土膨胀模型试验研究[J]. , 2011, 32(S1): 397-0402.

HUANG Bin , RAO Xi-bao , WANG Zhang-qiong , TAN Fan. Experimental study of expansion model of expansive soil considering state water content and density[J]. , 2011, 32(S1): 397-0402.

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