炭质页岩高填方路堤稳定性分析

journal6 ›› 2011, Vol. 32 ›› Issue (5): 69-74.

炭质页岩高填方路堤稳定性分析

（1.荆州市顺达高速公路建设有限公司，湖北荆州 434100；2.长沙理工大学土木与建筑学院，湖南长沙 410114）

出版日期:2011-09-25 发布日期:2012-04-06
作者简介:敖亦兵（1965-），男，湖北荆州人，荆州市顺达高速公路建设有限公司高级工程师，主要从事道路工程研究.
基金资助:
国家自然科学基金资助项目(50974024)

Analysis of Stability for Carbon Shale High-Filled Embankment

(1.Shunda Limited Corporation of Highway Construction,Jingzhou 434100,Hubei China；2.School of Civil Engineering and Architecture,Changsha University of Science & Technology,Changsha 410114,China)

Online:2011-09-25 Published:2012-04-06

摘要/Abstract

摘要：以广西某高速公路为工程背景，对炭质页岩物理力学性能进行了试验研究.炭质页岩强度随压实度的增加而增大，在水浸条件下炭质页岩的强度大大降低.运用有限元强度折减法，采用大型有限元计算软件分析了压实度及降雨对炭质页岩路堤稳定性的影响.结果表明：随着压实度的提高，路堤安全系数随之增加；降雨使路堤安全系数大幅减低，但只要路堤压实度达到93%以上，炭质页岩高填方路堤边坡不会失稳.

关键词： 炭质页岩, 高填方路堤稳定性, 有限元强度折减法

Abstract: Taking the highway in Guangxi province as the example，the physical and mechanical performance of carbon shale is tested.The strength of carbon shale increases with the degree of compaction augment,while the strength greatly decreases under the condition of water immersion carbon shale.Using the strength reduction finite element method,the influence on compaction and rainfall for carbon shale embankment stability is analyzed by large finite element calculation software.The results show that the safety coefficient of embankment will increase,when the compaction degree increases;while it will significantly decline with rainfall.When the compaction degree is up to more than 93%,the carbon shale high-filled embankment slope will be steady-going.

Key words: carbon shale, stability of high-filled embankment, finite element strength reduction method

敖亦兵, 刘新喜, 杨子汉, 王意明. 炭质页岩高填方路堤稳定性分析[J]. journal6, 2011, 32(5): 69-74.

AO Yi-Bing, LIU Xin-Xi, YANG Zi-Han, WANG Yi-Ming. Analysis of Stability for Carbon Shale High-Filled Embankment[J]. journal6, 2011, 32(5): 69-74.