钢-粉质黏土界面抗剪强度影响因素显著性分析  

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

作　　者：程文欣 张庆瑶 张庆鑫 郭聚坤 马永明 王瑞[3] CHENG Wenxin;ZHANG Qingyao;ZHANG Qingxin;GUO Jukun;MA Yongming;WANG Rui(School of Civil Engineering and Transportation,Shandong Jiaotong University,Jinan 250357;Department of Highway and Architecture,Shandong Transport Vocational College,Weifang 261206;School of Highway,Chang’an University,Xi’an 710064)

机构地区：[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

出　　处：《土工基础》2025年第1期53-57,共5页Soil Engineering and Foundation

基　　金：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)。

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。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.

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 

分 类 号：TU473[建筑科学—结构工程]