软土基坑复合土钉支护工作性能分析  

ANALYSIS ON BEHAVIOR OF COMPOSITE SOIL NAILING IN SOFT SOIL FOUNDATION SUPPORTING

作　　者：阮长锋[1] 

机构地区：[1]温州大学建筑与土木工程学院,浙江温州325035

出　　处：《低温建筑技术》2009年第8期83-84,共2页Low Temperature Architecture Technology

基　　金：浙江省教育厅科研课题(20020190)

摘　　要：结合具体工程实例,采用数值分析的方法,模拟基坑开挖过程中复合土钉支护结构的受力性状,并与实测结构相比,结果表明:土钉中的内力与其位置有很大的关系,土钉的设计参数如土钉刚度、土钉水平间距等对基坑的侧向变形有影响,但也不能盲目增大土钉的设计参数来获得更小的侧向位移。Composite soil nailing wall is formed by combining soil nailing with cement mixed pile.The behavior of a composite soil nailing wall is analyzed through a project using 2D-FEM analysis. The calculated results are compared with the field measured values. The results show that the distribution of tension force in nail has big relation with its position.The soil nailing design parameter such as stiffness and space has an important impact on lateral displacements of foundation pit, but increase the design parameter blindly can not obtain less lateral displacements.

关 键 词：基坑 复合土钉支护 搅拌桩 侧向变形 

分 类 号：TU473[建筑科学—结构工程]