陇西地区黄土的强度特性

THE STRENGTH CHARACTER OF LOESS IN LONGXI AREA OF GANSU

摘要:

本文介绍了对陇西地区黄土的强度特性进行的试验研究结果。陇西地区Q₃和Q₄黄土在偏应力作用下的应力-应变关系基本上可用康德纳双曲线模式来表示。对大量的试验数据采用了最小二乘法计算了黄土的强度参数,结果表明其强度参数是比较低的。本文还对几十组黄土的强度参数与其物理性质指标之间的关系进行了回归分析,建立了它们之间的经验公式,该公式可以直接用于陇西地区黄土的强度和土坡稳定性估算。

Abstract:

This paper presents the experimental results for the strength character of loess in Longxi area, and probes the relationship between strain and stress under deviator stress. The least squares method is used to calculate the strength parameters with a large number of experimental data. The empirical formula between strength parameters and physical characters has been set up by regression analysis for tens of experimental data. This formula can be used directly to the strength estimation of loess and loess slope stability in Longxi area.