| 软土结构性破损的孔径分布试验研究 |
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| 引用本文： | 吕海波,汪稔,赵艳林,孔令伟.软土结构性破损的孔径分布试验研究[J].岩土力学,2003,24(4):573-578. |
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| 作者姓名： | 吕海波 汪稔 赵艳林 孔令伟 |
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| 作者单位： | 1．中国科学院武汉岩土力学研究所重点实验室，湖北 武汉 430071；2．广西大学土木建筑工程学院，广西 南宁 530004 |
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| 基金项目： | 广西自然科学基金资助项目(0249011)，广西大学博士科研启动基金资助项目。 |
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| 摘 要： | 采用压汞法对天然结构性软土压缩过程孔隙大小分布的演化进行了试验研究，结果表明，当荷载超过结构屈服应力后，尺寸较大的团粒间孔隙首先发生破坏，随着荷载的增大，越来越小的孔隙受到影响，但团粒内孔隙在压缩过程中不发生变化；根据试验结果提出了孔隙结构破损势的概念，并用其表征孔隙分布随荷载变化的规律。
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| 关 键 词： | 软土结构性 孔隙分布 压汞试验 |
| 文章编号： | 1000-7598-(2003)04-0573-06 |
| 修稿时间： | 2002年11月25 |
Study of structure characteristics evolution of soft clay by pore size distribution test |
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| LU Hai-bo,WANG Ren,ZHAO Yan-lin,KONG Ling-wei.Study of structure characteristics evolution of soft clay by pore size distribution test[J].Rock and Soil Mechanics,2003,24(4):573-578. |
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| Authors: | LU Hai-bo WANG Ren ZHAO Yan-lin KONG Ling-wei |
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| Institution: | 1．Key Laboratory，Institute of Rock and Soil Mechanics， Chinese Academy of Sciences，Wuhan 430071 China； 2．College of Civil Engineering，Guangxi University，Nanning 530004，China |
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| Abstract: | Freeze dehydration and mercury intrusion porosimetry was used to study the change of pore size distribution of a structured soft soil, during one-dimension compression. It was found that when pressure increased beyond the structure yield stress, the largest pores began to break down. If the pressure was increased continuously, smaller pores would be affected; but the intra-aggregate pores could not be changed during compression. Pore structure breakage potential was defined in terms of the evolution of the pore size distribution in different stress level. |
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| Keywords: | soft clay structure characteristics pore size distribution mercury intrusion porosimetry |
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