土工基础

›› 2014, Vol. 28 ›› Issue (6): 123-125.

• 工程实录 • 上一篇    下一篇

滨海土体与钢材接触面剪切特性试验

殷 勇，李富荣   

  1. （盐城工学院土木工程学院，江苏盐城 224051）
  • 收稿日期:2014-07-23 出版日期:2014-12-25 发布日期:2015-01-12
  • 作者简介:殷 勇（1980-），男，讲师，研究生，研究方向为岩土工程.
  • 基金资助:

    基金项目：住房和城乡建设部科技项目（2013-K3-18）

The Shear Properties of the Contact Surface between Steel and Coastal Plain Soils

YING Yong, LI Furong   

  1. (College of Civil Engineering, Yancheng Institute of Technology, Yancheng, 224051)
  • Received:2014-07-23 Online:2014-12-25 Published:2015-01-12

摘要： 以某滨海地区土体为研究对象，采用改进直剪仪研究土与钢材料接触面的摩擦特性。试验结果表明，法向应力越大剪应力越大，剪应力最大时纯土的剪切位移大于土体-钢材料复合体的剪切位移，剪应力与法向应力近似呈线性关系；一般情况下，土体-钢材料复合体的抗剪强度低于纯土的抗剪强度；随着法向应力的增长，沥青涂层使得剪应力先降低后增加。

关键词: 改进直剪仪, 土-钢材料接触面, 剪切特性, 试验研究

Abstract: The frictional characteristics of the contact surface between the steel and the coastal plain soils are studied by a modified direct shear device. The results indicate that the shear stress is linearly proportional to the normal stress; at the maximum shear stress, the displacement in the soil is greater than that of in the soilsteel interface. The shear resistance of the soilsteel combination is lower than the shear resistance in soil mass. With the increase of the normal stress, the effect of the bitumen coating will first lower the shear stress and then it will increase the shear stress at the contact surface.

Key words: Modified Direct Shear Device, SoilSteel Contact Surface, Shear Characteristics, Test Devices