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中国公路学报
CHINA JOURNAL OF HIGHWAY AND TRANSPORT
2006 Vol.19 No.4 P.11-16

数字化期刊

湿陷性黄土变形的各向异性及与浸水路径的无关性

张茂花  谢永利  刘保健 

摘 要:通过对原状Q3黄土进行单轴压缩试验,分析了不同加载方向和浸水路径对湿陷性黄土变形特性的影响,讨论了湿陷性黄土变形的各向异性以及增(减)湿过程中变形与浸水路径的无关性.结果表明,黄土的湿陷变形与压缩变形的各向异性相当显著,而且按不同方向压缩的过程中,湿陷变形与压缩变形之间存在相互转化关系:竖向压缩时,土体的湿陷性最大,压缩性最小;沿45°方向压缩时,土体的湿陷性最小,压缩性最大;沿水平方向压缩时,其湿陷性和压缩性都介于前两者之间.按不同方向压缩时,试样浸水饱和后的压缩性基本相同,即饱和黄土的压缩变形是各向同性的.黄土的湿陷性和压缩性都与浸水路径无关,试样浸水后的压缩性与初始含水量无关,不同的浸水路径和加荷路径对浸水试样的压缩性没有影响.
关键词:道路工程;黄土;单轴压缩试验;湿陷变形;压缩变形;各向异性;浸水路径
分类号:U416.169 文献标识码:A

文章编号:1001-7372(2006)04-0011-06

Anisotropy of Collapsible Loess Deformation and Independence of Deformation and Soak Paths

ZHANG Mao-hua  XIE Yong-li  LIU Bao-jian 

基金项目:国家自然科学基金项目(59870401)
作者简介:张茂花(1977-),女,山东诸城人,讲师,工学博士研究生,E-mail:zmh7716@hit.edu.cn.
作者单位:张茂花(东北林业大学,土木工程学院,黑龙江,哈尔滨,150040) 
     谢永利(长安大学,公路学院,陕西,西安,710064) 
     刘保健(长安大学,公路学院,陕西,西安,710064) 

参考文献:

[1]高大钊,孙钧.岩土工程回顾与前瞻[M].北京:人民交通出版社,2000:296-312.GAO Da-zhao,SUN Jun.A Review and Prospect of Geotechnical Engineering[M].Beijing:China Communications Press,2000:296-312.
[2]李家春,田伟平.黄土路堤坡顶及土路肩暴雨冲蚀破坏机理试验[J].长安大学学报:自然科学版,2004,24(2):27-29.LI Jia-chun,TIAN Wei-ping.Rainfall Erode Mechanism on Loess Road Shoulder and Tope of Side-Slope[J].Journal of Chang'an University:Natural Science Edition,2004,24(2):27-29.
[3]刘祖典.黄土力学与工程[M].西安:陕西科学技术出版社,1997.LIU Zu-dian.Mechanics and Engineering of Loess[M].Xi'an:Shaanxi Science and Technology Press,1997.
[4]赵占厂,谢永利,杨晓华,等.黄土公路隧道衬砌受力特性测试研究[J].中国公路学报,2004,17(1):66-69.ZHAO Zhan-chang,XIE Yong-li,YANG Xiao-hua,et al.Observation Research on the Mechanical Characteristic of Highway Tunnel Lining in Loess[J].China Journal of Highway and Transport,2004,17(1):66-69.
[5]刘保健,支喜兰,谢永利,等.公路工程中黄土湿陷性问题分析[J].中国公路学报,2005,18(4):27-31.LIU Bao-jian,ZHI Xi-lan,XIE Yong-li,et al.Analysis of Problems on Loess Hydrocompaction in Highway Engineering[J].China Journal of Highway and Transport,2005,18 (4):27-31.
[6]来弘鹏,谢永利,杨晓华.黄土公路隧道受力特性测试[J].长安大学学报:自然科学版,2005,25(6):53-56.LAI Hong-peng,XIE Yong-li,YANG Xiao-hua.Mechanical Characteristic of Highway Tunnel in Loess[J].Journal of Chang'an University:Natural Science Edition,2005,25 (6):53-56.
[7]杨永红,王选仓,韩国杰,等.甘肃黄土地区土基回弹模量[J].长安大学学报:自然科学版,2005,25(3):7-10.YANG Yong-hong,WANG Xuan-cang,HAN Guojie,et al.Rebound Module of Subgrade in Gansu Loess Area[J].Journal of Chang'an University:Natural Science Edition,2005,25(3):7-10.
[8]冯忠居,冯瑞玲,赵占厂,等.黄土湿陷性对桥梁桩基承载力的影响[J].交通运输工程学报,2005,5(3):60-63.FENG Zhong-ju,FENG Rui-ling,ZHAO Zhan-chang,et al.Effect of Collapsible Loess on Pile Foundation Bearing Capacity[J].Journal of Traffic and Transportation Engineering,2005,5 (3):60-63.
[9]王磊,马骉.黄土地区公路排水系统病害防治[J].长安大学学报:自然科学版,2003,23(1):15-18.WANG Lei,MA Biao.Prevention and Treatment for Disasters of Highway Drainage System in Loess Area[J].Journal of Chang'an University:Natural Science Edition,2003,23(1):15-18.
[10]郑南翔,丛卓红.黄土地区深路堑、高路堤合理横断面的评价方法[J].长安大学学报:自然科学版,2003,23(5):14-17.ZHENG Nan-xiang,CONG Zhuo-hong.Grey System Evaluation for Deep Cutting and High Embankment Reasonable Transect at Loess Area[J].Journal of Chang'an University:Natural Science Edition,2003,23(5):14-17.
[11]GBJ 25-90,湿陷性黄土地区建筑规范[S].GBJ 25-90,Construction Code of Collapsible Loess Area[S].
[12]高国瑞.黄土湿陷变形的结构理论[J].岩土工程学报,1990,12(4):1-9.GAO Guo-rui.The Structure Theory of Collapse Deformation of Loess[J].Chinese Journal of Geotechnical Engineering,1990,12(4):1-9.
[13]SD 128-84,土工试验规程[S].SD 128-84,Testing Code of Soil Engineering[S].
[14]JTJ 051-93,公路土工试验规程[S].JTJ 051-93,Testing Code of Highway Soil Engineering[S].
[15]谢定义.黄土力学特性与应用研究的过去、现在与未来[J].地下空间,1999,19(4):273-284.XIE Ding-yi.The Past,Present and Future of the Research on Mechanical Characteristics and Application of Loess[J].Underground Space,1999,19 (4):273-284.
[16]张茂花.湿陷性黄土增(减)湿变形性状试验研究[D].西安:长安大学,2002.ZHANG Mao-hua.Experimental Study on the Deformation Characteristics of Collapsible Loess During Moistening and Demoistening Process[D].Xi'an:Chang'an University,2002.

收稿日期:2005年9月11日

出版日期:2006年7月31日

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