长沙理工大学学报：自然科学版2012，Vol.9Issue(2)：13-18,6.
高速公路路基动力响应现场试验与数值分析
The field test and numerical analysis of expressway subgrade dynamic response
摘要
Abstract
In the field test of Changsha ring expressway subgrade dynamic response,let vehicle load act directly on the roadbed and use the fiber grating element to test the multiple measuring points under the subgrade.According to the results of field test,combined with numerical simulation software and analyzing the attenuation relationship between subgrade dynamic stress and the subgrade depth,the influence depth of the dynamic stress of the standard axle load is about 3m.At the same time,we also obtain a variation of the dynamic stress of different vehicle load in the different speed.Furthermore,a correction model of sine function of vehicle load is put forward innovatively.关键词
动荷/高速公路/路基/动力特性Key words
dynamic load/expressway/subgrade/dynamic characteristics分类
交通工程引用本文复制引用
何海鹰..高速公路路基动力响应现场试验与数值分析[J].长沙理工大学学报：自然科学版,2012,9(2):13-18,6.基金项目
交通运输部重大科技专项资助项目 （）
