土工织物加筋软土路堤的位移影响分析  

Effect Analysis on Displacement of Soft Soil Embankment Reinforced with Geotextiles

作　　者：余洁 刘云贺[1] 秦浩[1] 黄亮 范晓翠[1] 孙萌 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048 [2]东方锅炉(集团)股份有限公司,四川自贡643001 [3]中铁第一勘查设计院集团有限公司,陕西西安710043

出　　处：《水利与建筑工程学报》2009年第2期22-25,共4页Journal of Water Resources and Architectural Engineering

基　　金：陕西省教育厅专项资金(04JK232)

摘　　要：软土加筋是一种提高土体稳定性的有效方法,其理论分析对指导工程应用有至关重要的作用。对土工织物加筋软土路堤进行了三维非线性有限元分析。分别通过土体加筋与未加筋的对比分析,改变织物模量和单层加筋位置的分析,最优加筋层数和最优加筋位置的分析,研究了铺设土工织物对软土路堤的位移影响。研究成果表明:加筋能有效地发挥抗拉性能,限制路堤的侧向位移,增加土体稳定性;合理的选择织物模量、加筋位置和加筋层数可以有效地控制路堤的位移。为土工织物加筋路堤的设计提供工程参考。The reinforced soft soil is an effective method to improve the stability of soil mass.The theoretical analysis plays an important role in guiding the engineering application.The 3-D geotextiles-reinforced embankment of soft soil is analyzed here.Through comparing the unreinforced embankment with the reinforced one,and analyzing the change of the elastic modulus and single geotextile position,and the optimal geotextile position and geotextile layers,the displacement effect of the soft soil embankment reinforced with geotextiles is studied.It is shown that the geotextiles can significantly exert the tensile properties,reduce the lateral displacement and improve the stability of the soil;the geotextiles with relative modulus,position and layers can efficiently control the displacement of the embankment.The paper can offer some references to the design.

关 键 词：土工织物 软土路堤 最优 非线性有限元分析 

分 类 号：U412.222[交通运输工程—道路与铁道工程]