| 加荷模式对海积软黏土结构损伤性状的影响分析 |
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| 引用本文： | 熊春发,孔令伟,杨爱武.加荷模式对海积软黏土结构损伤性状的影响分析[J].岩土力学,2014,35(7):1892-1898. |
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| 作者姓名： | 熊春发 孔令伟 杨爱武 |
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| 作者单位： | 1. 中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室，武汉 430071；2. 天津城建大学 土木工程学院，天津 300380 |
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| 基金项目： | 国家自然科学基金项目(No. 51179186)；湖北省自然科学基金创新群体项目(No. 2011CDA124)。 |
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| 摘 要： | 以天津海积软黏土为研究对象，对原状土及重塑土进行了不同固结压力、应力路径、加荷速率、排水条件下的三轴剪切试验，以应力比结构性参数与应变的关系来描述结构性衰减，研究了不同加荷模式下的结构损伤特性。结果表明，固结压力小于结构屈服应力时，剪切阶段的初始结构性和损伤速率基本不受固结压力影响，固结压力大于结构屈服应力时，初始结构性和损伤速率则随固结压力的增大而减小；在0
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| 关 键 词： | 软黏土 加荷模式 损伤特性 结构性参数 |
| 收稿时间： | 2013-07-04 |
Analysis of influence of loading mode on character of structural damage of marine soft clay |
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| XIONG Chun-fa,KONG Ling-wei,YANG Ai-wu.Analysis of influence of loading mode on character of structural damage of marine soft clay[J].Rock and Soil Mechanics,2014,35(7):1892-1898. |
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| Authors: | XIONG Chun-fa KONG Ling-wei YANG Ai-wu |
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| Institution: | 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. School of Civil Engineering, Tianjin Chengjian University, Tianjin 300380, China |
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| Abstract: | Based on Tianjin marine soft clay, triaxial tests are carried out on the intact soil and remolded soil in different test conditions, such as consolidation pressure, stress path, loading rate, drainage condition. The structural damage is described by the relationship between stress ratio structural parameter and strain. The character of structural damage under different loading modes is studied. The results indicate that when the consolidation pressure is below structure yielding pressure, the initial structure and damage rate in the shearing stage are not influenced by consolidation pressure. When consolidation pressure is above structure yielding pressure, the initial structure and damage rate decrease with the increasing of consolidation pressure. When the direction angle of stress path ? is in the ranges of 0
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| Keywords: | soft clay loading mode character of structural damage structural parameter |
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