边加敏. 2017: 路堤填芯弱膨胀土线膨胀率测试模拟研究. 工程地质学报, 25(3): 686-691. DOI: 10.13544/j.cnki.jeg.2017.03.014
    引用本文: 边加敏. 2017: 路堤填芯弱膨胀土线膨胀率测试模拟研究. 工程地质学报, 25(3): 686-691. DOI: 10.13544/j.cnki.jeg.2017.03.014
    BIAN Jiamin. 2017: SIMULATION TEST STUDY ON LINEAR EXPANSIVE RATIO FOR DETERMINATION OF WEAK EXPANSIVE SOIL IN SUBGRADE. JOURNAL OF ENGINEERING GEOLOGY, 25(3): 686-691. DOI: 10.13544/j.cnki.jeg.2017.03.014
    Citation: BIAN Jiamin. 2017: SIMULATION TEST STUDY ON LINEAR EXPANSIVE RATIO FOR DETERMINATION OF WEAK EXPANSIVE SOIL IN SUBGRADE. JOURNAL OF ENGINEERING GEOLOGY, 25(3): 686-691. DOI: 10.13544/j.cnki.jeg.2017.03.014

    路堤填芯弱膨胀土线膨胀率测试模拟研究

    SIMULATION TEST STUDY ON LINEAR EXPANSIVE RATIO FOR DETERMINATION OF WEAK EXPANSIVE SOIL IN SUBGRADE

    • 摘要: 为研究荷载变化方式对膨胀土线膨胀率测定的影响,模拟路堤的实际荷载变化对用于路堤填芯膨胀土的线膨胀率测定进行试验,结果显示,线膨胀率随着上覆荷载的增大而减小,随着初始干密度的增大而增大。将模拟路堤荷载变化状态的线膨胀率试验结果与规范加载方式的试验结果进行对比分析,结果显示,两种荷载变化方式的线膨胀率测定差值较大,且初始干密度越小、上覆荷载越小,荷载变化方式对线膨胀率测定值的影响越大,表明在线膨胀率测定过程中不考虑实际工程的荷载变化方式对用于工程膨胀土的膨胀变形指标测定具有一定的影响,对膨胀土路堤的变形量预测产生一定的影响,在进行膨胀土线膨胀率测定时需要考虑实际的荷载变化方式,并结合荷载变化方式进行线膨胀率测定。

       

      Abstract: This paper studies the variety ways of loading that affect the linear expansive ratio of expansive soil. It simulates the load variety ways of subgrade to do the test of linear expansive ratio. The results show that the higher load and initial dry density can lead to higher linear expansive ratio. It compares the linear expansive ratio test results from specification and simulation under subgrade loading. The result shows that there is great difference in linear expansive ratios of specification and simulation under subgrade loading. With the decreasing of unload and initial dry initial, the variety of loading ways has the more effect on the linear expansive ratio. It indicates that it has some influence on linear expansive ratio which does not consider the load variety ways of actual engineering. It has some influence on deformation forecast of subgrade used expansive soil. It is needed to consider the effect of load variety ways on linear expansive ratio during its determination. It is suggested to combine the load variety ways into the test of linear expansive ratio.

       

    /

    返回文章
    返回