土工基础

土工基础 ›› 2023, Vol. 37 ›› Issue (2): 311-314.

• 测试技术 • 上一篇    下一篇

混凝土-土接触面减阻材料室内模型试验研究

饶为胜1,2,3,4，王新龙1，马 超1   

  1. (1.中交第二航务工程局有限公司，武汉 430040；2.长大桥梁建设施工技术交通行业重点实验室，武汉 430040；
    3.交通基础设施智能制造技术交通运输行业研发中心，武汉 430040；4.中交公路长大桥建设国家工程研究中心有限公司,武汉 430040)
  • 收稿日期:2021-10-25 修回日期:2021-11-02 出版日期:2023-04-30 发布日期:2023-04-20
  • 作者简介:饶为胜（1991-），男，工程师，硕士，研究方向为岩土工程试验与数值计算。

Laboratory Model Test Study of Side Friction Reduction Material for Concrete-Soil Interface

RAO Weisheng1,2,3,4， WANG Xinlong1， MA Chao1   

  1. (1.CCCC Second Harbor Engineering Co. Ltd., Wuhan 430040；
    2.Key Laboratory of Major Bridge Construction Technology and Transportation Industry, Wuhan 430040；
    〖JP2〗3.Transportation Infrastructure Intelligent Manufacturing Technology Research and Development Center of Transportation Industry, Wuhan 430040；
    4.CCCC Highway Major Bridge Construction National Engineering Research Center Co. Ltd., Wuhan 430040)
  • Received:2021-10-25 Revised:2021-11-02 Online:2023-04-30 Published:2023-04-20

摘要： 通过在沉井外侧包裹减阻材料，可减小沉井下沉时所受的侧摩阻力。为研究不同减阻材料的减阻效果，分别选择硅胶、橡胶、聚四氟乙烯、铁皮等材料进行室内模型试验。以接触面材料类型作为单一变量，得出不同减阻材料与土之间的相对侧摩阻。试验结果表明，聚四氟乙烯和橡胶与土体间的侧摩阻相近，减阻效果较好，具备工程应用价值，相关研究结论可为沉井助沉措施的选择提供依据。


关键词: 接触面, 减阻材料, 模型试验

Abstract: By wrapping the side friction reduction material outside the caisson, the side friction resistance of the caisson during sinking installation can be reduced. In order to study the side friction reduction effect of the different side friction reduction materials, namely, silica gel, rubber, polytetrafluoroethylene, iron sheet, were selected for the laboratory model test. With the contact material type as a single variable, the relative side friction between different friction reduction materials and the adjacent soil is obtained. The test results show that the side friction between PTFE, rubber and soil is similar, and the friction reduction effect is satisfactory, which has the engineering application value. The relevant research conclusions can provide basis for the selection of sinking aids for the caisson installation.

Key words: Contact Surface, Side Friction Reduction Material, Model Test

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