循环荷载下红层泥岩的动力特性及路用性能研究

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Abstract In order to verify the applicability of red mudstone as subgrade filling in Dazhou—Chengdu railway，laboratory dynamic triaxial tests and field cyclic loading tests were performed. The dynamic strength and deformation properties of red mudstone were investigated by the dynamic triaxial tests. After introducing the concept of dynamic stress level，the test results indicate that the critical level of dynamic stress is about 30%. By analyzing the correlation between dynamic shear stress ratio and accumulative deformation，this paper proposes a calculation model of accumulative deformation of red mudstone subjected to cyclic loads，and presents the physical meaning and determining method of model parameters. The results of field cyclic loading tests demonstrate that settlement and rate of subsidence of subgrade can meet the requirements of high-speed railway construction when using red mudstone to fill the base layer of subgrade bed. Employing the proposed prediction model to calculate the accumulative deformation of red mudstone layer，the calculated and measured values match well as the deformation is stable；but some differences are observed before deformation stability due to different conditions and loading frequencies between laboratory and field tests.

Key words： rock mechanics red mudstone cyclic loading critical dynamic stress accumulative deformation pavement performance

Received: 07 January 2013

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https://rockmech.whrsm.ac.cn/EN/Y2013/V32/I9/1813

[1] 蒋关鲁，房立凤，王智猛，等. 红层泥岩路基填料动强度和累积变形特性试验研究[J]. 岩土工程学报，2010，32(1)：124–129.(JIANG Guanlu，FANG Lifeng，WANG Zhimeng，et al. Experimental study on dynamic strength and accumulated deformation characteristics of red-mudstone filling[J]. Chinese Journal of Geotechnical Engineering，2010，32(1)：124–129.(in Chinese)) [2] 边学成，陈云敏. 列车移动荷载作用下分层地基响应特性[J]. 岩石力学与工程学报，2007，26(1)：182–189.(BIAN Xuecheng，CHEN Yunmin. Characteristics of layered ground responses under train moving loads[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(1)：182–189.(in Chinese)) [3] 孔祥辉，蒋关鲁，王智猛. 循环荷载下红层泥岩土的动态特性[J]. 水文地质工程地质，2012，39(4)：75–79.(KONG Xianghui，JIANG Guanlu，WANG Zhimeng. Dynamic characteristics of red-mudstone soils under cyclic loads[J]. Hydrogeology and Engineering Geology，2012，39(4)：75–79.(in Chinese)) [4] BROWN S F，LASHINE A K F，HYDE A F L. Repeated load triaxial testing of silty clay[J]. Geotechnique，1975，25(1)：95–114. [5] WERKMEISTER S，DAWSON A R，WELLNER F. Permanent deformation behavior of granular materials and the shakedown concept[J]. Transportation Research Record：Journal of the Transportation Research Board，2001：75–81. [6] 孔祥辉，蒋关鲁. 循环荷载下红层泥岩路基土的变形特性研究[J]. 铁道标准设计，2013，(2)：1–4.(KONG Xianghui，JIANG Guanlu. Study on deformation property of red bed mudstone subgrade under cyclic loads[J]. Railway Standard Design，2013，(2)：1–4.(in Chinese)) [7] MONISMITH C L，OGAWA N，FREEME C R. Permanent deformation characteristics of subgrade soils due to repeated loading[J]. Transportation Research Record，1975，537：1–17. [8] LI D Q，SELIG E T. Cumulative plastic deformation for fine-grained subgrade soils[J]. Journal of Geotechnical Engineering，1996，122(12)：1 006–1 013. [9] CHAI J C，MIURA N. Traffic-load-induced permanent deformation of road on soft subsoil[J]. Journal of Geotechnical and Geoenvironmental Engineering，2002，128(11)：907–916. [10] 黄茂松，姚兆明. 循环荷载下饱和软黏土的累积变形显式模型[J]. 岩土工程学报，2011，33(3)：325–331.(HUANG Maosong，YAO Zhaoming. Explicit model for cumulative strain of saturated clay subjected to cyclic loading[J]. Chinese Journal of Geotechnical Engineering，2011，33(3)：325–331.(in Chinese)) [11] 廖化荣，汤连生，刘增贤，等. 循环荷载下路基红黏土临界应力水平分析[J]. 岩土力学，2009，30(3)：587–594.(LIAO Huarong，TANG Liansheng，LIU Zengxian，et al. Analysis of critical stress level of subgrade red clay under cyclic loading[J]. Rock and Soil Mechanics，2009，30(3)：587–594.(in Chinese)) [12] 刘晓红，杨果林，方薇. 武广高铁无砟轨道路堑基床红黏土动剪应变门槛试验研究[J]. 岩石力学与工程学报，2011，30(增2)： 3 602–3 610.(LIU Xiaohong，YANG Guolin，FANG Wei. Dynamic experimental research on dynamic shear strain threshold of cutting bed red clay under ballastless track Wuhan-Guangzhou high-speed railway[J]. Chinese Journal of Rock Mechanics and Engineering. 2011，30(Supp.2)：3 602–3 610.(in Chinese)) [13] 孔祥辉，蒋关鲁. 循环荷载下红层泥岩土累积变形特性[J]. 长江科学院院报，2012，29(12)：68–72.(KONG Xianghui，JIANG Guanlu. Cumulative deformation properties of red mudstone soils under cyclic loading[J]. Journal of Yangtze River Scientific Research Institute，2012，29(12)：68–72.(in Chinese)) [14] 堀井克己，舘山勝. 砂質土の累積変形特性に関する実験式[C]// 土木学会第55回年次学術講演会. [S.l.]：[s.n.]，2000：204–205. (KATSUMI H，MASARU T. Empirical formula on the accumulative deformation of sand soils[C]// Proceedings of the 55th Annual Scientific Conference of the Japan Society of Civil Engineers. [S.l.]：[s.n.]，2000：204–205.(in Japanese)) [15] 王智猛，蒋关鲁，魏永幸，等. 达成线红层泥岩路基循环加载试验研究[J]. 岩土工程学报，2008，30(12)：1 888–1 893.(WANG Zhimeng，JIANG Guanlu，WEI Yongxing，et al. Experimental study on dynamic performance of red-mudstone subgrade under cyclic loading in Dazhou-Chengdu line[J]. Chinese Journal of Geotechnical Engineering，2008，30(12)：1 888–1 893.(in Chinese)) [16] 中华人民共和国行业标准编写组. TB10621—2009 高速铁路设计规范[S]. 北京：中国铁道出版社，2010.(The Professional Standards Compilation Group of People?s Republic of China. TB10621—2009 Code for design of high speed railway[S]. Beijing：China Railway Publishing House，2010.(in Chinese)) [17] 蔡英，曹新文. 重复加载下路基填土的临界动应力和永久变形初探[J]. 西南交通大学学报，1996，31(1)：1–5.(CAI Ying，CAO Xinwen. Study of the critical dynamic stress and permanent strain of the subgrade-soil under the repeated load[J]. Journal of Southwest Jiaotong University，1996，31(1)：1–5.(in Chinese))