黄土粘弹性性质的试验分析  

Experiment Analysis of Viscoelasticity of Loess

作　　者：蒋甫[1] 应荣华[2] 姚波[3] 

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海200092 [2]长沙理工大学公路工程学院,湖南长沙410076 [3]江苏省交通规划设计院常州分院,江苏常州213022

出　　处：《石家庄铁道学院学报》2006年第4期63-66,共4页Journal of Shijiazhuang Railway Institute

基　　金：交通部西部交通建设科技资助项目(200131882260)

摘　　要：结合交通部西部科技项目,通过室内试验模拟黄土在不同静力荷载作用下的沉降规律,采用粘弹性力学中的材料蠕变性质和曲线模拟等方式对采集的数据进行分析,得到黄土在不同荷载作用下的非线性粘弹性蠕变特性,为分析新老路基的不协调变形提供了帮助。同时,通过曲线拟合还可以预测新老路基最终沉降值,为预测新老路基的不协调变形以及建立黄土路基沉降的本构方程提供参考。With the theory of viscoelasticity concerning the creep of the material and the simulation of curve, this research is focused on the sedimentation of the loess under different load through indoor experiments. It is pointed out that the loess has the eharacteristic of nonlinear viscoelasticity, which can help analyze the sedimentation difference between the new and the old subgrade, and subsequent sedimentation can be calculated with simulative equation. This can be a reference for the prediction of the subsequent sedimentation of different loess subgrade and for the establishment of the actual equation of the loess sedimentation.

关 键 词：粘弹性 蠕变 沉降观测 曲线拟合 

分 类 号：TU431[建筑科学—岩土工程]