摘要
通过粘弹性力学中的材料蠕变性质和曲线模拟沉降等方式分析陕西试验路段黄土在单向不同的荷载作用下的沉降规律,得到黄土在不同荷载作用下的非线性粘弹性蠕变特性,并分析新老路基在不同荷载作用下的不协调变形。同时,通过曲线拟合还可以预测新老路基最终沉降值,因此可以预测新老路基的工后不协调变形并提出西部黄土路基沉降的本构方程,通过本构方程可以得到黄土沉降与荷载之间规律。
With viscoelastic creep theory and curve fitting approach, this paper discusses the settlement of loess, subjected to one-directional loads, at a test road in Shanxi Province. The characteristics of nonlinear viscoelastic creep and discordant deformation of new subgrade and old subgrade under different loads are analyzed. Based on the analysis, ultimate settlements of new subgrade and old subgrade as special cases can be predicted with the respective fitting equations. Finally, a constitutive equation is derived in relating the settlement and applied load on loess in Western Region.
出处
《中南公路工程》
2005年第3期23-24,39,共3页
Central South Highway Engineering
基金
交通部西部科技建设项目(200131882260)
关键词
粘弹性
蠕变
沉降观测
曲线拟合
viscoelasticity
creep
settlement observation
curve fitting
