复合土钉墙工作性状的有限元模拟与分析  

Study on numerical simulation of composite soil nailed wall

作　　者：胡敏云[1] 彭孔曙[2] 潘晓东[1] 

机构地区：[1]浙江工业大学,杭州310014 [2]华东勘测设计研究院,杭州310014

出　　处：《岩土力学》2008年第8期2131-2136,2162,共7页Rock and Soil Mechanics

摘　　要：针对软土地区复合土钉墙(CSNW)的应用特点及施工方法,采用非线性有限元方法建立简单土钉墙及复合土钉墙受力变形的计算模型。对两种计算模型的土钉轴力分布、超前桩的受力以及土体的位移模式等进行研究,以明确复合土钉支护在加入搅拌桩以后其与简单土钉支护工作性状的差异,为复合土钉支护设计计算方法的改进提供依据。Based on nonlinear finite element method,numerical analysis is carried out to study the working behavior of composite soil-nailed wall（CSNW） in soft soil,including ground deformation and stress distribution in soil nails and leading piles.By comparing with simple soil nailed wall’s simulation,the function of the leading piles in CSNW is analyzed.It is shown that the leading piles in CSNW can significantly help decreasing the displacement of retained soil as well as change the distribution of soil deformation,reducing the tensile force in soil nails,and therefore,increasing the stability of the retained soil.

关 键 词：复合土钉墙 工作性状 数值模拟 本构模型 超前桩 

分 类 号：TU443[建筑科学—岩土工程]