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风化砂改良膨胀土力学指标试验研究

DOI: 10.3969/j.issn.1674-0696.2014.01.15, PP. 64-69

Keywords: 膨胀土,风化砂,CBR,回弹模量,抗剪强度,expansivesoil,weatheredsand,CaliforniaBearingRatio(CBR),resilientmodulus,shearstrength

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Abstract:

:?通过室内加州承载比(CBR)、回弹模量及抗剪强度试验,研究了初始含水率、掺砂比对改良膨胀土性能的影响。研究表明:在同一掺砂比下,CBR值、回弹模量和抗剪强度指标均随着初始含水率的提高先增加后减小;当初始含水率相同时,CBR值随着掺砂比的增大逐渐增加,当掺砂比由30%提高至40%时,CBR值增幅最大;黏聚力随着掺砂比的增加逐渐减小;内摩擦角随着掺砂比的增大先增加后减小;回弹模量随着掺砂比的增大先增加后减小,掺砂比超过10%后回弹模量迅速降低。在进行路基设计与施工时,须根据工程实际情况,综合考虑各强度指标间的影响,适当的调整初始含水率与掺砂比,以到达最佳的改良效果。

References

[1]  Wang Mingfu,Cheng Yu. Laboratory study on strength of expansive soil improved with lime [J].Yangtze River,2010, 41( 6) : 71-77.
[2]  Yin Qi,Chen Jia,Zhu Xinxiao, et al. Experimental study on strength characteristic of lime modified expansive soil [J].Urban Roads Bridges and Flood Control, 2008,8( 8) : 352-354.
[3]  陈开圣,沙爱民. 压实黄土回弹模量试验研究[J].岩土力学,2010, 31( 3) : 748-759.
[4]  Chen Kaisheng, Sha Aimin. Research on resilient modulus test of compacted loess [J].Rock and Soil Mechanics, 2010, 31( 3) : 748-759.
[5]  陈文杰,梁乃兴. 砂砾石材料回弹模量试验方法研究[J].重庆交通大学学报: 自然科学版, 2007,26( 6) : 115-118.
[6]  Chen Wenjie,Liang Naixing. Test method research on elastic modulus of sand-gravel material [J].Journal of Chongqing Jiaotong University:Natural Science,2007, 26( 6) : 115-118.
[7]  胡梦玲,姚海林,刘杰,等. 干密度对路基性能的影响研究[J].岩土工程,2012,33( 增刊2) : 91-97.
[8]  Hu Mengling,Yao Hailin,Liu Jie,et al. Research on influence of dry density on subgrade performance [J]. Journal of Rock and Geotechnical Engineering,2012, 33( S2) : 91-97.
[9]  陈开圣. 高液限红黏土CBR 试验[J]. 公路, 2010,2( 2) : 148-151.
[10]  Chen Kaisheng. CBR test of high liquid red clay [J].Highway,2010,2( 2) : 148-151.
[11]  陈声凯,凌建明,罗志刚. 路基回弹模量应力依赖性分析及预估模型[J].土木工程学报, 2007,40( 6) : 95-99.
[12]  Chen Shengkai,Ling Jianming,Luo Zhigang. Stress-dependent characteristics and prediction model of the resilient modulus of subgrade soils [J].China Civil Engineering Journal,2007, 40( 6) : 95-99.
[13]  李振,刑义川,周俊. 膨胀土两种不同条件下抗剪强度比较[J].水力发电学报, 2009, 28( 1) : 165-170.
[14]  Li Zhen,Xing Yichuan,Zhou Jun. Comparison with shear strength of the expansive soil under two different conditions[J]. Journal of Hydroelectric Engineering,2009,28( 1) : 165-170.
[15]  Huang Shiwu,Liu Mingwei,Yin Jian. Analysis on failure modes of expansive soil subgrade embankment [J]. Journal of Chongqing Jiaotong University: Natural Science, 2009, 28( 2) : 250-254.
[16]  杨树荣,拱祥生,黄伟庆,等. 非饱和黏性路基土回弹模量之研究[J]. 岩土工程学报,2006,28( 2) : 225-229.
[17]  Yang Shurong,Kung Johnson,Huang Qingwei, et al. Resilient modulus of unsaturated cohesive subgrade soils [J]. Journal of Rock Mechanics and Geotechnical Engineering,2006,28( 2) : 225-229.
[18]  凌建明,苏华才,谢华昌,等. 路基土动态回弹模量的试验研究[J]. 地下空间与工程学报,2010,6( 5) : 919-925.
[19]  Ling Jianming,Su Huacai,Xie Huachang, et al. Laboratory research on dynamic resilient modulus of subgrade soil [J]. Chinese Journal of Underground Space and Engineering, 2010,6( 5) : 919-925.
[20]  黄芳,吴国雄,王燕,等. 半柔性路面复合材料抗压回弹模量研究[J]. 重庆交通大学学报: 自然科学版,2008,27( 1) : 65-68.
[21]  Huang Fang,Wu Guoxiong,Wang Yan,et al. Study on compacted rebound modulus of semi - flexible pavement compound material[J]. Journal of Chongqing Jiaotong University: Natural Science,2008,27( 1) : 65-68.
[22]  王雁然,曹定胜. 改性膨胀土CBR 值的试验研究[J]. 岩土力学与工程学报, 2004,23( 增刊1) : 4397-4399.
[23]  Wang Yanran,Cao Dingsheng. Testing study on CBR value of improved expansive soils [J]. Journal of Rock Mechanics and Geotechnical Engineering,2004,23( S1) : 4397-4399.
[24]  汪东林,栾茂田,杨庆. 重塑非饱和黏土的土-水特征曲线及其影响因素研究[J]. 岩土力学,2009,30( 3) : 751-756.
[25]  Wang Donglin,Luan Maotian,Yang Qing. Experimental study of soil-water characteristic curve of remolded unsaturated clay [J].Rock and Soil Mechanics, 2009,30( 3) : 751-756.
[26]  王明甫,程钰. 石灰改性膨胀土强度的室内试验研究[J].人民长江,2010, 41( 6) : 71-77.
[27]  殷琦,陈佳,朱心潇,等. 石灰改良膨胀土的强度特性试验研究[J].城市道桥与防洪,2008,8( 8) : 352-354.
[28]  黄世武,刘明维,尹健. 膨胀土地基路基填方失稳破坏模式分析[J].重庆交通大学学报: 自然科学版,2009,28( 2) : 250-254.
[29]  魏永耀,孙树林,郑华章. 膨胀土-胶粉( ESR) 强度特性室内试验研究[J]. 工程地质学报,2010,18( 4) : 543-547.
[30]  Wei Yongyao,Sun Shulin,Zheng Huazhang. Laboratory tests on uni-axial compressive strength of expansive soil-rubber ( ESR)[J]. Journal of Engineering Geology, 2010,18( 4) : 543-547.

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