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动荷载作用下粉煤灰改良黄土的动应力-应变关系研究

, PP. 45-51

Keywords: 粉煤灰,黄土,初始动弹性模量,阻尼比,动应力-应变关系

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Abstract:

基于动三轴试验系统,以素黄土和粉煤灰改良黄土为研究对象,研究了动荷载作用下素黄土和不同掺合比粉煤灰改良黄土的动应力-应变关系,同时对其模型参数、初始动弹性模量和阻尼比进行了对比研究.研究结果表明(1)素黄土和不同掺合比粉煤灰改良黄土的动应力-应变骨干曲线服从双曲线模型,但模型参数随粉煤灰掺入量的不同而不同.通过研究数据的拟合,初步建立了粉煤灰改良黄土的动应力-应变关系模型参数a、b与粉煤灰掺入量m之间的定量关系.(2)粉煤灰掺入量对粉煤灰改良黄土的初始动弹性模量和阻尼比影响明显,表现出初始动弹性模量随粉煤灰掺入量的增大而增加以及阻尼比明显减小的特性.(3)从土动力学角度出发,定量地给出了最佳灰-土掺合比.

References

[1]  贾存兴. 粉煤灰改良高速公路路基填料的试验研究[J]. 华东公路, 2009(1):42-44. JIA Cunxing. Experimental study on fly ash improved highway subgrade filling[J]. East China Highway, 2009(1):42-44.
[2]  陈昌禄、邵生俊、方娟等. 不同结构性黄土的强度规律及传统强度准则适应性分析[J]. 地震工程学报, 2013, 35(4):851-857. CHEN changlu, SHAO shengjun, FANG Juan, et al. Analysis of strength variation of different Kinds of structural loess and adaptability of traditional strength criterion[J]. China Earthquake Engineering Journal, 2013, 35(4):851-857.
[3]  张向东, 曹启坤, 潘宇. 二灰改良土动力特性试验研究[J]. 岩土力学, 2010, 31(8):2560-2564. ZHANG Xiangdong, CAO Qikun, PAN Yu. Experiment research of lime-fly ash Soil’s dynamics characteristics[J]. Rock and Soil Mechanics, 2010, 31(8):2560-2564.
[4]  兰常玉, 薛鹏, 周俊英. 粉煤灰改良膨胀土的动强度试验研究[J]. 防灾减灾工程学报, 2010, 30(S):79-81. LAN Changyu, XUE Peng, ZHOU Junying. Experiment research on fly ash modified expansive soil of dynamics strength[J]. Journal of Disaster Prevention and Mitigation Engineering, 2010, 30(S):79-81.
[5]  廖红建, 李涛, 马宗源, 等. 黄土骨干曲线模型比较分析[J]. 岩土力学, 2009, 30(S2):17-21. LIAO Hongjian, LI Tao, MA Zongyuan, et al. Comparative analysis of backbone curve models for loess soils[J]. Rock and Soil Mechanics, 2009, 30(S2):17-21.
[6]  王峻, 王强, 王杰民. 震后黄土动力学特性试验研究[J]. 水文地质工程地质, 2010, 37(4):63-67. WANG Jun, WANG Qiang, WANG Jiemin. Experimental study on the dynamic characteristics of post-earthquake loess[J]. Hydrogeology & Engineering Geology, 2010, 37(4):63-67.
[7]  赵少强, 别大华, 邓剑辰. 粉煤灰改良黄土填料的试验研究[J]. 铁道建筑技术, 2006(3):47-50. ZHAO Shaoqiang, BIE Dahua, DENG Jianchen. A study on fly ash improved loess filling material[J]. Railway Construction Technology, 2006(3):47-50.
[8]  夏琼, 杨有海, 耿煊. 粉煤灰与石灰、水泥改良黄土填料的试验研究[J]. 兰州交通大学学报, 2008, 27(3):40-43. XIA Qiong YANG Youhai, GENG Xuan. Experimental study on fly ash-lime or fly ash-cement loess filling[J]. Journal of Lanzhou Jiaotong University, 2008, 27(3):40-43.
[9]  邓元林, 杨同军. 粉煤灰的应用现状及展望[J]. 交通工程与安全, 2011, (11):144-147. DENG Yuanlin, YANG Tongjun. Application status and prospect of fly ash[J]. Transport Engineering & Safety, 2011, (11):144-147.
[10]  李凤起, 姚建平, 赵冬生, 等. 黄土湿陷性与黄土粉煤灰石灰混合料试验[J]. 沈阳建筑大学学报(自然科学版), 2005, 21(2):111-113. LI Fengqi, YAO Jianping, ZHAO Dong-sheng, et al. The experimental study of loess collapsibility and mixture of fly ash of loess and lime[J]. Journal of Shenyang Jianzhu University(Natural Science), 2005, 21(2):111-113.
[11]  王德卿, 贾刚, 贾喜荣, 等. 粉煤灰对湿陷性黄土工程性质的影响[J]. 粉煤灰综合利用, 2001, (6):47-48. WANG Deqing, JIA Gang, JIA Xirong, et al. Fly ash effects on engineering properties of collapsible loess[J]. Fly Ash Comprehensive Utilization, 2001, (6):47-48.
[12]  马晓婷, 党进谦, 张超. 粉煤灰改良氯盐渍土变形性质的试验研究[J]. 中国农村水利水电, 2010, (6):150-152. MA Xiaoting, DANG Jinqian, ZHANG Chao. Experimental research on the improvement of deformation of chlorine saline with fly ash[J]. China Rural Water and Hydropower, 2010, (6):150-152.

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