森林工程2012，Vol.28Issue(2)：75-78,4.
基于PLAXIS的新旧路基结合部台阶开挖方案的有限元分析
Finite Element Analysis on Schemes of Steps Excavation in Old and New Subgrade Junction Based on PLAXIS
摘要
Abstract
In the course of old road reform and widen, the junction between old and new subgrade prones to large differences in deformation, which may lead to the destruction of the pavement structure and stability reducing of the embankment. In order to reduce the differential settlement of the junction after the construction process, finite element software PLAXIS was used to simulate and ana- lyze the schemes of excavation about steps during the construction process of old road widening. The different settlements between old and new embankment under all kinds of excavation schemes were calculated, and a reasonable construction scheme was proposed. The calculated results show that, with the greater of unload!ng and loading amount, the different deformations at the junction in both horizontal and vertical directions will be greater. Scheme 2 and 4 should be used in priority in the course of reforming and widening the old road.关键词
旧路加宽/台阶开挖/PLAXISKey words
old road widening/steps excavation/PLAXIS分类
农业科技引用本文复制引用
滕海生,郑立孝..基于PLAXIS的新旧路基结合部台阶开挖方案的有限元分析[J].森林工程,2012,28(2):75-78,4.基金项目
黑龙江省交通运输厅重点项目 （）
