| 赵景峰.冻土抗拉强度与冻温及含水率关系的试验研究[J].地质与勘探,2011,47(6):1158-1161 |
| 冻土抗拉强度与冻温及含水率关系的试验研究 |
| An Experimental Study on the Relationship between Tensile Strength andTemperature and Water Ratio of Frozen Soil |
| 投稿时间：2011-05-23 修订日期：2011-08-06 |
| DOI： |
| 中文关键词: 冻土 抗拉强度 冻结温度 含水率 |
| 英文关键词: frozen soil,tensile strength,frozen temperature,water ratio |
| 基金项目:吉林省科技厅基金项目(20090477) |
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| 摘要点击次数: 1753 |
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| 中文摘要: |
| [摘 要]通过用CBR-1 型承载比试验仪实测不同冻结温度和不同含水率下冻土的强度,建立了抗拉强度与冻结温度和含水率关系的数学模型,并进行了科学的分析,找出之间变化的规律:含水率在14%～25%且一定时,温度在0℃～ -20℃内抗拉强度随着冻结温度的降低而逐渐增加,在-20℃达到抗拉强度最大值;而冻结温度在-20℃以下,抗拉强度随着冻结温度的降低而降低。冻结温度在-1℃～-24℃且一定时,冻土的抗拉强度随着含水率的增加而逐渐降低;冻结温度在-5℃以下,含水量大于17%时,冻土的抗拉强度随着含水率的增加而降低缓慢。文章结论对寒区的工程建设提供更加准确的设计和施工依据。 |
| 英文摘要: |
| Abstract:With the practical measurement of frozen soil strength under different frozen temperatures and water ratios by the CBR-1 bearing ratio tester,the relationship between tensile strength and frozen temperature and water ratio is built,and their regularities are developed. When the water ratio lies between fourteen and twenty-five percent,the tensile strength is gradually increased accompanied with the reduction of temperature when between zero and twenty degrees below zero,the strength reaches its maximum. When the temperature is below twenty degrees below zero,the tensile strength is lowered with the reduction of frozen temperature. When the temperature is between one degree below zero and twenty-four degrees below zero,it is also lowered with the increasing water ratio;when the temperature is below five degrees below zero and the water ratio is more than seventeen percent,the strength is slowly reduced with the increase of water ratio. This conclusion will provide more accurate design and construction basis for the engineering construction in the cold area. |
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