| 重塑黄土抗拉特性研究 |
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| 引用本文： | 孙明星,党进谦,康顺祥.重塑黄土抗拉特性研究[J].西安文理学院学报,2006,9(3):59-61. |
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| 作者姓名： | 孙明星 党进谦 康顺祥 |
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| 作者单位： | 西北农林科技大学水利与建筑工程学院 陕西杨凌712100 |
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| 基金项目： | 西北农林科技大学校科研和教改项目 |
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| 摘 要： | 通过单轴拉伸试验,研究重塑黄土的拉伸特性.结果表明:在单轴拉应力作用下重塑黄土的应力应变曲线为应变硬化型,试样的破坏表现为脆性破坏.初始含水率对重塑黄土抗拉强度的影响极其显著,在干密度一定时,抗拉强度随初始含水率的增大呈先增后减的趋势,抗拉强度的最大值并非是土样最优含水量对应的值;干密度对重塑黄土抗拉强度有重要影响,抗拉强度随干密度的增大而增大;试样破坏时的极限拉应变随含水率的增大呈现先减小后增大的变化规律.
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| 关 键 词： | 重塑黄土 抗拉强度 干密度 含水率 拉应变 |
| 文章编号： | 1008-5564(2006)03-0059-03 |
| 收稿时间： | 04 17 2006 12:00AM |
| 修稿时间： | 2006年4月17日 |
Tensile Character of Disturbed Loess |
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| SUN Ming-xing,DANG Jin-qian,KANG Shun-xiang.Tensile Character of Disturbed Loess[J].Journal of Xi‘an University of Arts & Science:Natural Science Edition,2006,9(3):59-61. |
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| Authors: | SUN Ming-xing DANG Jin-qian KANG Shun-xiang |
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| Abstract: | The tensile strength of disturbed loess was analyzed by the method of single axis tensile tests.The results showed that the stress strain curve belonged to stress hardening type,affected by the tensile stress of single axis.The sample destruction was fragile.The original water content had considerable effect on the tensile strength of disturbed loess.With certain dry density and the increase of original water content,the tensile strength firstly increased and then decreased,but the maximum value of the tensile strength was not necessarily the best corresponding water content.Dry density had great effect on the tensile strength.The tensile strength increased with the increase of dry density.When the samples `ere destroyed,the definite tension strain firstly decreased and then increased with the increase of water content. |
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| Keywords: | disturbed loess tensile strength dry density water content tension strain |
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