冲击压实法加固湿陷性黄土路基的应用研究.pdf
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第 22 卷 增 2 岩石力学与工程学报 22(增 2):2848~2852
2003 年10 月 Chinese Journal of Rock Mechanics and Engineering Oct.,2003
冲击压实法加固湿陷性黄土路基的应用研究
1 1,2 1 1
王生新 韩文峰 谌文武 梁庆国
1 2
( 兰州大学资源环境学院 兰州 730000) ( 天津城市建设学院土木工程系 天津 300381)
摘要 主要介绍了加固湿陷性黄土路基的一项新技术——冲击压实法。通过常规土工试验及显微结构试验:扫描
电镜、压汞分析,并从宏观至微观,定性定量分析了加固效果,同时探讨了冲击压实法的加固机理,并提出合理
的施工工艺参数,为进一步在黄土地区推广该项新技术提供了理论依据和实践经验。
关键词 土力学,湿陷性黄土,路基,冲击压实,扫描电镜,压汞分析
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分类号 TU 441 .7 文献标识码 A 文章编号 1000-6915(2003)增2-2848-05
APPLICATION STUDY OF IMPACT COMPACTION TECHNOLOGY TO
IMPROVEMENT OF COLLAPSIBLE LOESS ROADBED
1 1,2 1 1
Wang Shengxin ,Han Wenfeng ,Chen Wenwu ,Liang Qingguo
1
( Resources and Environment College,Lanzhou University , Lanzhou 730000 China)
2
( Department of Civil Engineering ,Tianjin Institute of Urban Construction , Tianjin 300381 China)
Abstract A new technology ,impact compaction technology in improving collapsible loess roadbed,is studied.
The effects of the improvement are analyzed qualitatively and quantitatively ,both in macroscale and microscale ,
through routine soil tests and microstructure testing methods such as scanning electron microscope and mercury
intrusion porosimetry. The improvement mechanism of the technology is discussed and reasonable parameters for
roadbed construction process are put forward as to provide theoretical basis as well as practical experience for the
promotion of this new technology in the loess regions.
Key words soil mechanics ,collaps
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