土工织物对路基加固作用的有限元分析

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作者单位:: 1. 天津大学建工学院, 天津 300072;
2. 中国石油集团工程技术研究院, 天津塘沽 300451
Tianjin University, Tianjin 300072

关键词:: 路基;土工织物;有限元;加筋机理;分析
road foundation;geotextile;finite element analysis;reinforcement mechanism;analysis

摘要:: 对有限元计算模型进行了介绍和分析。并针对实际路堤,结合PLAXIS程序,用有限元法对土工织物加筋在路基加固中的作用效果和机理做了分析:路基加筋后,虽然对软土地基的竖向位移影响不大,但有效地消除了差异沉降,使差异沉降减小了13.4%;尤其是加筋能够有效地抑制侧向位移的发展,增大土坡的安全系数,达到增强土坡稳定的作用。这符合大多数实际工程经验和实测资料的结果。
The FEA (finite element analysis) modeling is introduced in this paper. The effect of geotextile on road foundation reinforcement and its mechanism are analyzed by means of FEA program PLAXIS. It is shown that the effect of reinforcement on the vertical displacement is not big, but the uneven subsidence is effectively reduced by 13.3%. Especially the road foundation reinforcement can restrict the development of lateral displacement successfully and increase the safety coefficient of earth slope and enhance the earth slope stability in consequence. The calculated results are proven to be in accordance with the experiences from the most engineering projects and the testing data.

2004,2(2): 17-19 收稿日期：2003-11-3

分类号：TU361

作者简介：严驰(1959-),男,湖北人,副教授,在天津大学岩土工程研究所从事科研工作.

参考文献：
[1] 张学言.岩土塑性力学[M].北京:人民交通出版社,1993.