高级搜索
  • 全国中文核心期刊
  • 中国科技核心期刊
  • 美国工程索引（EI）收录期刊
  • Scopus数据库收录期刊

袖阀管劈裂注浆加固粉土路基实验研究

朱登元, 管延华, 刘惠忠, 王倩, 张庆涛

朱登元, 管延华, 刘惠忠, 王倩, 张庆涛. 袖阀管劈裂注浆加固粉土路基实验研究[J]. 岩土工程学报, 2012, 34(8): 1425-1431.
引用本文: 朱登元, 管延华, 刘惠忠, 王倩, 张庆涛. 袖阀管劈裂注浆加固粉土路基实验研究[J]. 岩土工程学报, 2012, 34(8): 1425-1431.
shu
ZHU Deng-yuan, GUAN Yan-hua, LIU Hui-zhong, WANG Qian, ZHANG Qing-tao. Model tests on fracture grouting reinforcement of silt embankment by using Soletanche method[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(8): 1425-1431.
Citation: ZHU Deng-yuan, GUAN Yan-hua, LIU Hui-zhong, WANG Qian, ZHANG Qing-tao. Model tests on fracture grouting reinforcement of silt embankment by using Soletanche method[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(8): 1425-1431.
shu

袖阀管劈裂注浆加固粉土路基实验研究  English Version

  • 1.山东大学土建与水利学院，山东 济南 250061；2.临沂大学建筑学院，山东 临沂 276005；3.济南市公路管理局，山东 济南 250014

基金项目: 国家自然科学基金项目（50178222）
详细信息
    作者简介:

    朱登元(1971– )，男，山东沂南人，研究员，博士研究生，主要研究方向为路基路面结构与材料。

  • 中图分类号: TU441

Model tests on fracture grouting reinforcement of silt embankment by using Soletanche method

  • (1. School of Civil Engineering, Shandong University, Ji'nan 250061, China; 2. School of Civil Engineering and Architecture, Linyi University, Linyi 276005, China; 3. Ji'nan Highway Administration, Ji'nan 250014, China)

摘要

    摘要
  • 摘要: 通过室内大型模拟实验，对粉土路基强度、刚度在毛细水作用下的衰减规律和袖阀管劈裂注浆加固路基的效果进行研究。实验模拟新建路基、潜水位20 cm/50 cm的毛细水作用路基、袖阀管注浆劈裂土体加固路基等4个工况，得到粉土路基土体含水率的分布规律和物理力学指标；在分级循环加卸荷载的作用下，得到路基模型总体刚度、受力和变形的特性；挖除路基模型，观察袖阀微桩及浆液扩散的形态。结果表明：毛细水作用可使粉土路基模型总体刚度降低70%，土体抗剪强度下降，路基竖向塑性变形随荷载增大快速增加；水平分层劈裂土体凝固的浆液不仅阻断了毛细水的上升通道，而且与底端扩大的微桩形成空间骨架与土体共同作用，骨架与土体各承担荷载大约50%，袖阀管加固粉土路基效果显著。
    Abstract: Based on large-scale indoor model tests, the attenuation law of strength and stiffness of silt embankment under the action of capillary water and the reinforcement effect of the embankment by using the Soletanche method are studied. Four working conditions, newly constructed embankment, attenuated embankments affected by the capillary water with different groundwater levels (20 and 40 cm) and fracture grouting reinforced embankment, are simulated. Moisture content distribution, physical and mechanical properties of the silt embankment are detected. General stiffness, force and deformation characteristics of the embankment model are obtained under grading cyclic loading and unloading conditions. Micro-piles and fracture grouting spread forms are observed during the excavation of the embankment model. The test results indicate that the general stiffness of the silt embankment will reduce by 70% because of the capillary water, the shear strength of embankment soil will decline, and the vertical plastic deformation of the embankment increases rapidly with the increasing load. The horizontal layered fracture grouting not only blocks the rising channels of capillary water, but also forms a space frame with the bottom expansion micro-piles to bear the load with soil together, of about 50%. The reinforcement effect of the embankment by means of the Soletanche method is significant.
    • HTML全文
    • 参考文献(9)
  • [1] 刘长生. 袖阀管注浆法在公路路基病害处治中的应用[J]. 山西建筑, 2008, 34(13): 308–309. (LIU Chang-sheng. The application of sleeve-valve-pipe grouting in road foundation disease management [J]. Shanxi Architecture, 2008, 34(13): 308–309. (in Chinese))
    [2] 许 岩. 袖阀管劈裂注浆在道路工程软基处理中的应用[J]. 山西建筑, 2011, 37(20): 156–157. (XU Yan. Application of sleeve valve barrel fracturing grouting method in road engineering soft foundation processing[J]. Shanxi Architecture, 2011, 37(20): 156–157. (in Chinese))
    [3] 曹少谦. 劈裂注浆在太祁跨线桥地基加固工程中的应用[J]. 山西交通科技, 2002, 152(增刊1): 85–88. (CAO Shao-qian. The application of splitting grouting to taiqi crossover ground strengthening engineering[J]. Shanxi Science & Technology of Communications, 2002, 152(S1): 85–88. (in Chinese))
    [4] 何永华, 李治国. 钢花管劈裂注浆施工技术[J]. 施工技术, 2008, 37(增刊1): 254–256. (HE Yong-hua, LI Zhi-guo. Construction technology of steel floral tube fracturing grouting[J]. Construction Technology, 2008, 37(S1): 254–256. (in Chinese))
    [5] 马丽娜, 严松宏. 劈裂注浆模拟试验设计及工程应用[J]. 路基工程, 2010(5): 67–69. (MA Li-na, YAN Song-hong. Simulation test design and engineering application of fracture grouting[J]. Embankment Engineering, 2010(5): 67–69. (in Chinese))
    [6] 白 云, 侯学渊. 软土地基劈裂注浆加固的机理和应用[J]. 岩土工程学报, 1991, 13(2): 89–93. (BAI Yun, HOU Xue-yuan. The mechanism and application of fracture grouting method in soft foundation[J]. Chinese Journal of Geotechnical Engineering, 1991, 13(2): 89–93. (in Chinese))
    [7] 孙 锋, 张顶立, 陈铁林, 等. 土体劈裂注浆过程的细观模拟研究[J]. 岩土工程学报, 2010, 32(3): 474–480. (SUN Feng, ZHANG Ding-li, CHEN Tie-lin, et al. Meso-mechanical simulation of fracture grouting in soil[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(3): 474–480. (in Chinese))
    [8] 张忠苗, 邹 健. 桩底劈裂注浆扩散半径和注浆压力研究[J]. 岩土工程学报, 2008, 30(2): 181–184. (ZHANG Zhong-miao, ZOU Jian. Penetration radius and grouting pressure in fracture grouting[J]. Chinese Journal of Geotechnical Engineering, 2008, 30(2): 181–184. (in Chinese))
    [9] 宋修广, 张宏博, 王松根, 等. 黄河冲积平原区粉土路基吸水特性及强度衰减规律试验研究[J]. 岩土工程学报, 2010, 32(10): 1594–1602. (SONG Xiu-guang, ZHANG Hong-bo, WANG Song-gen, et al. Hydrophilic characteristics and strength decay of silt roadbed in Yellow River alluvial plain[J]. Chinese Journal of Geotechnical Engineering, 2010, 32(10): 1594–1602. (in Chinese))
    • 相关文章
    • 施引文献
    • 资源附件(0)
计量
  • 文章访问数: 
  • HTML全文浏览量:  0
  • PDF下载量: 
  • 被引次数: 0
出版历程
  • 收稿日期:  2011-10-23
  • 发布日期:  2012-08-19

目录

摘要
HTML全文
    参考文献(9)
    相关文章
    施引文献
    资源附件(0)

    /

    返回文章
    返回
    版权所有 © 2010水利部交通部国家能源局南京水利科学研究院 苏ICP备05007122号-11公安联网备案号：32010602011255
    编辑部地址：南京市虎踞关34号《岩土工程学报》编辑部邮编：210024电话：025-85829534，85829556E-mail: ge@nhri.cn