摘要
为研究加筋土试件电阻率随加载时间、荷载及筋带应变变化的耦合关系,采用万能压力机和模具配合压制加筋土试件,在设计位置埋设CPE3020型钢塑复合拉筋带,采用万用表测量加筋土试件电阻率变化,研究其电阻率响应特性。试验结果表明:加筋土试件电阻率随加载时间、荷载和筋带应变的增大而减小;相同压实度下,含水率越高,加筋土试件电阻率越小;相同含水率下,压实度越大,加筋土试件电阻率越小;压实度越小,加筋土试件电阻率突变越早,试件承载能力越弱;压实度越大,加筋土试件电阻率突变越晚,试件承载能力越强;加筋土试件破坏时,电阻率突变对预测加筋土试件破坏程度问题有较好的响应特征。
To study the coupling relationship between the resistivity of reinforced soil and the loading time,load magnitude,and strain of the reinforcement,a universal testing machine and mold are used to compress reinforced soil specimens.CPE3020 type steel-plastic composite reinforcement strips are embedded at designated positions,and a multimeter is used to measure the changes in resistivity of the soil specimens,investigating the resistivity response characteristics of small reinforced soil specimens.The experimental results indicate:The resistivity of the soil specimens decreases with the increase of loading time,load,and strain of the reinforcement;under the same degree of compaction,higher moisture capacity results in lower soil specimens resistivity;under the same moisture capacity,greater compaction leads to lower soil specimens resistivity;the smaller the degree of compaction,the earlier the sudden change in soil specimens resistivity occurs,and the weaker the bearing capacity of the specimen;the greater the degree of compaction,the later the sudden change in soil specimens resistivity occurs,and the stronger the bearing capacity of the specimen;when the reinforced soil specimens fails,the sudden change in resistivity has a good response characteristic for predicting the damage degree of the reinforced soil body.
作者
赵亚文
刘勇
刘长青
ZHAO Yawen;LIU Yong;LIU Changqing(School of Civil Engineering,Shandong Jiaotong University,Jinan 250357,China;Linyi Hengjia Property Management Co.,Ltd.,Linyi 276000,China)
出处
《山东交通学院学报》
2025年第2期71-76,共6页
Journal of Shandong Jiaotong University
基金
国家自然科学基金项目(51978034)
国家重点研发计划项目(2022YFB2601900)。
关键词
加筋土
压实度
含水率
电阻率
响应特征
土体稳定性
reinforced soil
degree of compaction
moisture capacity
resistivity
response characteristics
soil stability
