吉林大学学报(地球科学版) ›› 2015, Vol. 45 ›› Issue (5): 1479-1484.doi: 10.13278/j.cnki.jjuese.201505202
张虎, 张建明, 苏凯, 刘世伟
Zhang Hu, Zhang Jianming, Su Kai, Liu Shiwei
摘要：
为了认识冻土旁压试验结果与常规试验结果之间的关系,在室内分别开展了冻结重塑黏土的旁压试验和单轴压缩试验,并对试验结果进行了对比分析。结果表明,在各级荷载作用下旁压曲线一般都呈现应变速率衰减的趋势,而单轴曲线在冻土破坏时会出现渐进流动阶段。旁压试验的应力-应变曲线呈现应变硬化型,而且出现初始拟弹性阶段;而单轴试验的应力-应变曲线则属于应变软化型,并在轴向应变大约为10%时达到剪应力峰值。温度相同时,旁压试验的剪切强度以及初始弹性模量都要大于单轴试验,且温度越低差值越大。
中图分类号:
| [1] Zaretskiy Y K, Fish A M. A Study of the Rheological Properties of Ice Using a Pressuremeter[C]//Sanger F J. Proceedings of 2nd International Conference on Permafrost. Washington D C: United States Planning Committee,National Academy of Sciences, 1973: 846-847.[2] Johnston L B. Evaluation of In-Situ Creep Properties of Frozen Soils with the Pressuremeter[C]// Sanger F J. Proceedings of 2nd International Conference on Permafrost. Washington D C: United States Planning Committee,National Academy of Sciences, 1973: 310-318.[3] Murat J R, Ladanyi B, Huneauit P. In-Situ Determination of Creep Properties of Sea Ice with the Pressuremeter[J]. Canadian Geotechnical Journal, 1989, 26: 575-594.[4] Yu Wenbing, Lai Yuanming. In-Situ Determination of Mechanical Properties of Frozen Soils with the Pressuremeter[J]. Cold Regions Science and Technology, 2002, 34: 179-189.[5] Baguelin F, Jezequel J F, Lemee E, et al. Expansion of Cylindrical Probes in Cohesive Soils[J]. Journal of the Soil Mechanics and Foundations Division, ASCE, 1972, 98:1129-1142.[6] Ladanyi B. In-Situ Determination of Undrained Stress-Strain Behavior of Sensitive Clays with the Pressuremeter[J]. Canadian Geotechnical Journal, 1972, 9: 313-319.[7] Palmer A C. Undrained Plane-Strain Expansion of a Cylindrical Cavity in Clay: A Simple Interpretation of the Pressuremeter Test[J]. Geotechnique, 1972, 22(3):451-457.[8] Silvestri V. Assessment of Self-Boring Pressuremeter Tests in Sensitive Clay[J]. Canadian Geotechnical Journal, 2003, 40: 362-387.[9] 刘小生, 汪小刚,马怀发,等. 旁压试验反演邓肯-张模型参数方法研究[J]. 岩土工程学报, 2004, 26(5): 601-606. Liu Xiaosheng, Wang Xiaogang, Ma Huaifa, et al. Study on Back-Analysis Method of Constitutive Para-meters for Duncan-Chang Model Based on In-Situ Pressuremeter Tests[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(5): 601-606.[10] 张虎,张建明,苏凯,等. 高温-高含冰量冻土原位旁压蠕变试验[J]. 吉林大学学报:地球科学版, 2013, 43(6): 1950-1958. Zhang Hu, Zhang Jianming, Su Kai, et al. In-Situ Pressuremeter Creep Test on High-Temperature and High Ice-Rich Permafrost[J]. Journal of Jilin University: Earth Science Edition, 2013,43(6): 1950-1958.[11] Fawaz A. Parameters Deduced from the Pressuremeter Test[J]. Canadian Geotechanical Journal, 2002, 39: 1333-1340.[12] 马小杰, 张建明, 郑波, 等. 青藏铁路路基下高温-高含冰量冻土旁压试验研究[J]. 岩土力学, 2008, 29(3): 764-768. Ma Xiaojie, Zhang Jianming, Zheng Bo, et al. Study on Warm and Ice-Rich Permafrost Beneath Qinghai-Tibet Railway Embankment with Pressuremeter[J]. Rock and Soil Mechanics, 2008, 29(3): 764-768.[13] 常士骠.工程地质手册[M].第4版. 北京:中国建筑工业出版社,2006. Chang Shipiao. Engineering Geology Manual[M]. 4th ed. Beijing:China Architecture and Building Press, 2006.[14] Kjartanson B H. The Creep of Ice Measured with the Pressuremeter[J]. Canadian Geotechnical Journal, 1988, 25: 250-261.[15] Ferreira R S, Robertson P K. Interpretation of Un-drained Self-Boring Pressuremeter Test Results Incorporating Unloading[J]. Canadian Geotechnical Journal, 1992, 29: 918-928.[16] Bolton M D, Whittle R W. A Non-Linear Elastic/Perfect Plastic Analysis for Plane Strain Undrained Expansion Tests[J]. Geotechnique, 1999, 49(1):133-141.[17] Ladanyi B. Interpretation of Pressuremeter Test Results in Frozen Soils[R]. Ottawa: National Research Council of Canada, 1972. |
| [1] | 张虎, 张建明, 苏凯, 刘世伟. 高温-高含冰量冻土原位旁压蠕变试验[J]. 吉林大学学报(地球科学版), 2013, 43(6): 1950-1957. |
|
||