全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

极度干旱区板块状盐渍土路用性能试验

, PP. 31-35

Keywords: 道路工程,路基,板块状盐渍土,路用性能,强度特性

Full-Text   Cite this paper   Add to My Lib

Abstract:

为解决新疆红鄯(红山口―鄯善)高速公路沿线板块状盐渍土用于工程建设的问题,基于渗透试验、无侧限抗压强度试验、CBR试验和承载力试验,研究了板块状盐渍土的路用性能。结果发现板块状盐渍土的天然抗压强度受含盐量分布不均匀、土样级配不同和试件尺寸效应等因素的影响,其值为2.8~28.6Pa,相差极大;板块状盐渍土的CBR值高达120%,远大于非板块状盐渍土的CBR值(28.6%),其弯沉值远小于设计弯沉值。这些结果说明,在工程实际中控制水的浸入,就可以充分利用板块状盐渍土作为路基的地基;结合渗透性试验成果和新疆红鄯高速公路周边环境的气候条件与降雨特征,提出对现场粗粒、细粒板块状盐渍土区段盐溶的深度处理分别为80cm和50cm。

References

[1]  高江平,吴家惠.硫酸盐渍土盐胀特性的单因素影响规律研究[J].岩土工程学报,1997,19(1):37-42. GAO Jiang-ping,WU Jia-hui.Study on laws of the single factor effect upon heaving properties of the supplanted salty soil[J].Chinese Journal of Geotechnical Engineering,1997,19(1):37-42.
[2]  包卫星,杨晓华,谢永利,等.典型天然盐渍土多次冻融循环盐胀试验研究[J].岩土工程学报,2006,28(11):1991-1995. BAO Wei-xing,YANG Xiao-hua,XIE Yong-li,et al.Research on salt expansion of representative crude saline soil under freezing and thawing cycles[J].Chinese Journal of Geotechnical Engineering,2006,28(11):1991-1995.
[3]  黄立度,席元伟,李俊超.硫酸盐渍土道路盐胀病害的基本特征及防治[J].中国公路学报,1997,10(2):39-47. HUANG Li-du,XI Yuan-wei,LI Jun-chao.The feature and prevention of the highway salt dilating distress in the vitriol salinized soil area[J].China Journal of Highway and Transport,1997,10(2):39-47.
[4]  王小生,章洪庆,薛 明,等.盐渍土地区道路病害与防治[J].同济大学学报,2003,31(10):1798-1782. WANG Xiao-sheng,ZHANG Hong-qing,XUE Ming,et al.Road disease and treatment in saline soil area[J].Journal of Tongji University,2003,31(10):1798-1782.
[5]  Newman G P,Wilson G W.Heat and mass transfer in unsaturated soils during freezing[J].Canadian Geotechnical Journal,1997,34(1):25-29.
[6]  包卫星,李志农.喀什地区不同盐渍土冻融变形特性试验[J].长安大学学报:自然科学版,2008,28(3):26-30. BAO Wei-xing,LI Zhi-nong.Testing on transmutation properties of saline soil under freezing and thawing cycles in Kashi,Xinjiang[J].Journal of Chang'an University:Natural Science Edition,2008,28(3):26-30.
[7]  张莎莎,杨晓华,谢永利,等.路用粗粒盐渍土盐胀特性[J].长安大学学报:自然科学版,2009,29(1):20-25. ZHANG Sha-sha,YANG Xiao-hua,XIE Yong-li,et al.Salt-expansion laws of coarse-grained salty soil in road subgrade[J].Journal of Chang'an University:Natural Science Edition,2009,29(1):20-25.
[8]  冯忠居,乌延玲,成 超,等.板块状盐渍土盐溶和盐胀特性研究[J].岩土工程学报,2010,32(9):1439-1442. FENG Zhong-ju,WU Yan-ling,CHENG Chao,et al.Salt-dissolution and salt-heaving characteristics of platelike saline soil[J].Chinese Journal of Geotechnical Engineering,2010,32(9):1439-1442.
[9]  冯忠居,李维洲,王廷武,等. 新疆板块状盐渍土工程特性[J].交通运输工程学报,2010,10(6):1-6. FENG Zhong-ju,LI Wei-zhou,WANG Ting-wu,et al.Engineering properties of plate-like saline soil in Xinjiang[J].Journal of Traffic and Transportation Engineering,2010,10(6):1-6.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133