| 冻土力学性质影响因素的显著性和交互作用研究 |
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| 引用本文： | 李顺群,高凌霞,柴寿喜.冻土力学性质影响因素的显著性和交互作用研究[J].岩土力学,2012,33(4):1173-1177. |
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| 作者姓名： | 李顺群 高凌霞 柴寿喜 |
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| 作者单位： | 1. 中国科学院冻土工程国家重点实验室，兰州 730000；2. 天津城市建设学院 土木工程系，天津 300384； 3. 天津市软土特性与工程环境重点实验室，天津 300384；4. 大连民族学院 土木建筑工程学院，辽宁 大连 116600 |
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| 基金项目： | 国家自然科学基金(No.51178290);冻土工程国家重点实验室开放基金资助项目(No.SKLFSE200906);教育部科学技术研究重点项目(No.210004);天津市自然科学基金项目(No.11JCYBJC02900) |
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| 摘 要： | 冻土的力学性质不仅依赖于含水率、温度、应变率、含盐量、围压等因素，也可能依赖于这些因素之间的交互作用。为进一步明确冻土强度、模量等力学指标与以上各因素的依存关系，根据既有试验资料和统计学原理，对冻土力学性质影响因素的显著性和因素间的交互作用进行了研究。结果表明，温度对冻土力学性质的影响最为显著，是影响冻土力学性质的主要因素，含水率、含盐量、应变速率等对冻土力学性质也有显著影响；同时，温度、含水率和应变速率对强度的影响存在明显的交互作用。因此，在研究冻土强度等力学行为时，片面针对某一因素开展研究是不合适的，而应综合考虑各主要因素及因素之间的交互作用影响。
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| 关 键 词： | 冻土 力学性质 显著性检验 正交试验 交互作用 |
| 收稿时间： | 2010-10-26 |
Significance and interaction of factors on mechanical properties of frozen soil |
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| LI Shun-qun
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GAO Ling-xia
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CHAI Shou-xi.Significance and interaction of factors on mechanical properties of frozen soil[J].Rock and Soil Mechanics,2012,33(4):1173-1177. |
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| Authors: | LI Shun-qun GAO Ling-xia CHAI Shou-xi |
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| Institution: | 1. State Key Laboratory of Frozen Soil Engineering, Chinese Academy of Sciences, Lanzhou 730000, China; 2. Department of Civil Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, China; 3. Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin 300384, China; 4. School of Civil and Architecture Engineering, Dalian Nationalities University, Dalian, Liaoning 116600, China |
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| Abstract: | The mechanical properties of frozen soil depend on not only the single factor,such as water content,temperature,strain rate,salt content,confining pressure etc.,but also on the possible interaction between the mentioned factors.In order to make sure of the dependence relationship of frozen soil strength and modulus with these factors,the significant and interaction of influencing factors of frozen soil mechanical properties is studied according to the experimental data and statistics theory.The study shows that the mentioned factors have obvious influence on the mechanical properties of frozen soils;however the factor of temperature is the most important one.Furthermore,the interactions on strength,which originating between temperature,water content and strain rate,are found to be obvious enough and can’t be neglected.Therefore,it is not rational that only some separate factors are taken into account as studying the mechanical properties.The most appropriate method is to study it in overall factors and with the interaction taken into consideration. |
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| Keywords: | frozen soil mechanical property significance test orthogonal test interaction |
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