应力历史对重塑红黏土动力特性影响的试验研究

李剑; 陈善雄; 姜领发; 熊署丹

doi:10.11779/CJGE201409012

应力历史对重塑红黏土动力特性影响的试验研究 English Version

中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉 430071

基金项目: 中国科学院重点部署项目（KZZD-EW-05-02）; 湖北省自然科学基金项目（2011CDA124）

详细信息

作者简介:
李剑（1983- ）,男,助理研究员,主要从事土体本构及工程稳定性理论研究。E-mail: lijianwelcome@163.com。

中图分类号: TU43
计量
- 文章访问数: 385
- HTML全文浏览量: 3
- PDF下载量: 396
出版历程
- 收稿日期: 2013-11-10
- 发布日期: 2014-09-21

Experimental study on influence of stress history on dynamic properties of remolded red clay

State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China

摘要

摘要: 土体动力特性是影响工程稳定性的重要因素。大量试验研究表明应力历史对红黏土静力特性有较显著影响,但目前研究应力历史对红黏土动力特性影响的成果甚少。为进一步揭示应力历史对红黏土动力特性的影响,对承受过不同应力历史的重塑红黏土土样进行了大量动三轴试验,得到了不同应力历史条件下重塑红黏土的动应力应变骨干曲线及动模量变化曲线,分析了不同应力历史对重塑红黏土的影响规律。试验结果表明：在不超过重塑红黏土强度的范围内,提高土体压实度、围压、固结比和振动频率,有利于提高土体动强度和动弹性模量。为给相关工程提供基础数据及参考,建立了重塑红黏土动力指标与应力历史因素的经验公式。
- 重塑红黏土 /
- 应力历史 /
- 动三轴试验 /
- 动力特性 /
- 动强度 /
- 动弹性模量
Abstract: The dynamic characteristics of soils are important factors affecting the engineering stability. Experimental studies have shown that the stress history has a more significant impact on the static characteristics of the red clay. However, there are few research achievements from the studies on the influence of the stress history on the dynamic properties of the red clay. In order to further reveal the effect of the stress history on the dynamic characteristics of the red clay, a large number of dynamic triaxial tests are performed on the remolded red clay samples with different stress histories. The dynamic stress-strain bone curve and the dynamic modulus variation curve of the remolded red clay under different stress histories are obtained. The influence laws of the stress history on the remolded red clay are analyzed. The test results show that in the range not exceeding the strength of the red clay, improving the soil compactness, confining pressure, consolidation ratio and vibration frequency is beneficial to enhancing the dynamic strength and elastic modulus of the soils. In order to provide basic data and references for the relevant projects, several empirical equations for the dynamic indexes and stress history factors of red clay are established.
- remolded red clay /
- stress history /
- dynamic triaxial test /
- dynamic characteristic /
- dynamic strength /
- dynamic elastic modulus

HTML全文

参考文献(22)

[1]	工程地质手册编委会. 工程地质手册[M]. 北京: 中国建筑工业出版社, 2007. (Editorial of Engineering Geology Manual. Engineering geology manual[M]. Beijing: China Architecture and Building Press, 2007. (in Chinese))
[2]	龙万学, 陈开圣, 肖涛, 等. 非饱和红黏土三轴试验研究[J]. 岩土力学, 2009, 30(增刊2): 28-33. (LONG Wan-xue, CHEN Kai-sheng, XIAO Tao, et al. Research of general triaxial test for unsaturated red clay[J]. Rock and Soil Mechanics, 2009, 30(S2): 28-33. (in Chinese))
[3]	孔令伟, 罗鸿禧, 袁建新. 红黏土有效胶结特征的初步研究[J]. 岩土工程学报, 1995, 17(5): 42-47. (KONG Ling-wei, LUO Hong-xi, YUAN Jian-xin. Preliminary study on the effective cementation characteristics of the red clay[J]. Chinese Journal of Geotechnical Engineering, 1995, 17(5): 42-47. (in Chinese))
[4]	孔令伟, 罗鸿禧. 游离氧化铁形态转化对红黏土工程性质的影响[J]. 岩土力学, 1993, 14(4): 25-39. (KONG Ling-wei, LUO Hong-xi. Effect of the conversion in form of free iron oxide on the engineering property of the red clay[J]. Rock and Soil Mechanics, 1993, 14(4): 25-39. (in Chinese))
[5]	柏巍, 孔令伟, 郭爱国, 等. 红黏土地基承载力和变形参数的空间分布特征分析[J]. 岩土力学, 2010, 31(增刊2): 164-169. (BAI Wei, KONG Ling-wei, GUO Ai-guo, et al. Research on distribution characteristics of bearing capacities and deformation parameters of laterite ground[J]. Rock and Soil Mechanics, 2010, 31(S2): 164-169. (in Chinese))
[6]	柏巍, 万智. 红黏土地区地基承载力的可拓综合评测方法[J]. 公路, 2010(7): 85-90. (BAI Wei, WAN Zhi. Extension comprehensive prediction method for evaluation of subgrade bearing capacity of red clay area[J]. Highway, 2010(7): 85-90. (in Chinese))
[7]	康景文, 甘鹰, 张仕忠, 等. 昆明新机场红黏土冲压地基处理实验研究[J]. 岩土工程学报, 2010, 32(增刊2): 496-500. (KANG Jing-wen, GAN Ying, ZHANG Shi-zhong, et al. Original stamping foundation treatment of red clay of new airport in Kunming[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(S2): 469-500. (in Chinese))
[8]	杨松, 卢廷浩. 非饱和红黏土的不排气、不排水三轴剪切试验研究[J]. 岩土力学, 2011, 32(增刊1): 356-359. (YANG Song, LU Ting-hao. Research on unventilated- undrained triaxial shear test of red cohensive soil[J]. Rock and Soil Mechanics, 2011, 32(S1): 356-359. (in Chinese))
[9]	梁斌, 莫凯. 不同含水率下重塑红黏土抗剪强度特性的研究[J]. 山西建筑, 2010, 36(4): 101-102. (LIANG Bin, MO Kai. Research on remodelling red clay's shear strength with different moisture ratio[J]. Shanxi Architecture, 2010, 36(4): 101-102. (in Chinese))
[10]	张金利, 蒋正国, 杨钢. 聚丙烯纤维红黏土力学特性试验研究[J]. 岩土工程学报, 2011, 33(增刊1): 420-425. (ZHANG Jin-li, JIANG Zheng-guo, YANG Gang. Experimental study on mechanical behaviors of polypropylene fiber renforced clay[J]. Chinese Journal of Geotechnical Engineering, 2011, 33(S1): 420-425. (in Chinese))
[11]	聂庆科, 李佩佩, 王英辉, 等. 三轴冲击荷载作用下红黏土力学性状[J]. 岩石力学与工程学报, 2009, 28(6): 1220-1225. (NIE Qing-ke, LI Pei-pei, WANG Ying-hui, et al. Mechanical characteristics of red clay under triaxial impact loading[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(6): 1220-1225. (in Chinese))
[12]	李佩佩. 强夯动力荷载作用下红黏土的工程特性研究[D]. 北京: 北京交通大学, 2008. (LI Pei-pei. The research of the red clay's engineering characteristics under the dynamic load[D]. Beijing: Beijing Jiaotong University, 2008. (in Chinese))
[13]	KAYNIA A M, MADSHUS C, ZACKRISSON P. Ground vibration from high-speed trains: prediction and countermeasure[J]. Journal of Geotechnical and Geoenviromental Engineering, ASCE, 2000, 126(6): 531-537.
[14]	刘晓红. 高速铁路无砟轨道红黏土路基动力稳定性研究[D]. 长沙: 中南大学土木工程学院, 2011. (LIU Xiao-hong. Research on dynamic stability of red clay subgrade under ballastless track of high-speed railway[D]. Changsha: Central South University, 2011. (in Chinese))
[15]	宫全美, 周顺华, 王炳龙. 地铁隧道地基土孔隙水压力变化及液化性研究[J]. 岩土工程学报, 2004, 26(2): 290-292. (GONG Quan-mei, ZHOU Shun-hua, WANG Bing-long. Variation of pore pressure and liquefaction of soil in metro[J]. Chinese Journal of Geotechnical Engineering, 2004, 26(2): 290-292. (in Chinese))
[16]	陈云敏, 边学成. 高速交通引起的振动和沉降[C]// 第七届全国土动力学学术会议论文集. 北京: 清华大学出版社, 2006: 3-13. (CHEN Yun-min, BIAN Xue-cheng. The vibration and settlement caused by high-speed transportation[C]// Proceedings of the Seventh National Soil Dynamics Conference. Beijing: Tsinghua University Press, 2006: 3-13. (in Chinese))
[17]	胡一峰. 高速铁路路基长期动力稳定性分析的理论和实践(SCR-SG021)[R]. 慕尼黑: 欧博迈亚公司, 2008: 10-30. (HU Yi-feng. Long-term dynamic stability of subgrade under high speed railway line from theory to practice (SCR-SG021)[R]. Munich: Corporation of Obermeyer in Germany, 2008: 10-30. (in Chinese))
[18]	韩卓. 振动荷载作用下路基动力响应试验与数值模拟[D]. 武汉: 中国科学院武汉岩土力学研究所, 2011. (HAN Zhuo. Experiment and numerical analysis of dynamic response of subgrade under vibration load[D]. Wuhan: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 2011. (in Chinese))
[19]	李剑. 高铁列车荷载作用下红黏土地基动力响应研究[D]. 武汉: 中国科学院武汉岩土力学研究所, 2013. (LI Jian. On dynamic response of the red clay foundation under high-speed train loading[D]. Wuhan: Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, 2013. (in Chinese))
[20]	DUNCAN J M, CHANG C Y. Nonlinear analysis of stress and strain in soils[J]. Journal of the Geotechnical Engineering Division, ASCE, 1970, 103(6): 517-533.
[21]	李广信. 高等土力学[M]. 北京: 清华大学出版社, 2004. (LI Guang-xin. Adavanced soil mechanics[M]. Beijing: Tsinghua University Press, 2004. (in Chinese))
[22]	李剑, 陈善雄, 姜领发, 等. 重塑红黏土动剪切模量与阻尼比的共振柱试验[J]. 四川大学学报(工程科学版), 2013, 45(4): 62-68. (LI Jian, CHEN Shan-xiong, JIANG Ling-fa, et al. Resonant column test on dynamic shear modulus and damping ratio of the remolded red clay and its law analysis[J]. Journal of Sichuan University (Engineering Science Edition), 2013, 45(4): 62-68. (in Chinese))