土工基础

土工基础 ›› 2025, Vol. 39 ›› Issue (1): 53-57.

• 专题论述 • 上一篇    下一篇

钢-粉质黏土界面抗剪强度影响因素显著性分析

程文欣1，张庆瑶1，张庆鑫1，郭聚坤2,3，马永明1，王瑞3   

  1. （1.山东交通学院 交通土建工程学院，济南 250357；2.山东交通职业学院 公路与建筑系，山东潍坊 261206；3.长安大学 公路学院，西安 710064）
  • 收稿日期:2023-01-19 修回日期:2023-03-13 出版日期:2025-02-28 发布日期:2025-03-01
  • 通讯作者: 郭聚坤（1986-），男，副教授，博士，研究方向为土体力学性质。
  • 作者简介:程文欣（2000-），女，本科，研究方向为结构物与土体相互作用。
  • 基金资助:
    山东省自然科学基金青年项目（编号：ZR2020QE257）；西藏自治区科技计划项目（编号：XZ202001ZY0013G）；西藏自治区自然科学基金项目（编号：XZ202001ZR0058G）；山东省交通运输科技项目（编号：2020B23）。

Significance Analysis of Influencing Factors on Shear Strength of Steel-Silty Clay

CHENG Wenxin1, ZHANG Qingyao1, ZHANG Qingxin1, GUO Jukun2,3, MA Yongming1， WANG Rui3   

  1. (1.School of Civil Engineering and Transportation, Shandong Jiaotong University, Jinan 250357；
    2.Department of Highway and Architecture, Shandong Transport Vocational College, Weifang 261206；
    3.School of Highway, Chang’an University, Xi’an 710064)
  • Received:2023-01-19 Revised:2023-03-13 Online:2025-02-28 Published:2025-03-01

摘要： 考虑粗糙度和含水率两种因素，开展了钢板与粉质黏土的界面剪切试验，分析了界面抗剪强度及其指标的变化规律，并对界面抗剪强度进行预测，利用标准化回归系数法进行了因素的显著性影响强弱对比。结果表明：粗糙度越大，界面抗剪强度及其指标越大。随着含水率的增大，界面抗剪强度和界面摩擦角逐渐减小，界面黏聚力先增加后减小。界面抗剪强度与法向应力、粗糙度和含水率三个自变量之间符合多元线性回归关系。粗糙度和含水率对界面抗剪强度均有显著影响，但含水率的影响更大。研究成果可为钢桩与粉质黏土相互作用提供一定的参考。

关键词: 钢, 粉质黏土, 界面抗剪强度, 粗糙度, 含水率, 显著性分析

Abstract: The influence of surface roughness and interface moisture content on the interface shear strength are investigated throughout the interfacial shear test of steel plate and silty clay samples. The significance of factors was compared by using the standardized regression coefficient method. The results show that the greater the roughness, the greater the interface shear strength and its index. With the increase of water content, the interface shear strength and interfacial friction angle gradually decrease, and the interface cohesion first increases and then decreases. The relationship between the interface shear strength and the three independent variables of normal stress, roughness and moisture content conforms to multiple linear regression. Roughness and moisture content have significant effects on the interface shear strength, but the influence of moisture content is greater. The research results can provide a reference value for the interaction between steel piles and silty clay. 

Key words: Steel, Silty Clay, Interface Shear Strength, Roughness, Water Content, Significance Analysis

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