挖填条件下锚固板桩墙墙体行为的数值研究  

Numerical Study on the Behavior of Anchored Sheet Pile Walls Under Excavation and Filling Conditions

作　　者：杨悦 YANG Yue(China Railway 18th Bureau Group Second Engineering Co.,Ltd.,Tangshan 063000,China)

机构地区：[1]中铁十八局集团第二工程有限公司,河北唐山063030

出　　处：《新乡学院学报》2023年第12期54-56,71,共4页Journal of Xinxiang University

摘　　要：针对用于提供横向土支撑的悬臂式或锚定式板桩墙由于系统刚度相对较低而产生相对较大的变形的问题,采用连续介质力学数值方法,借助有限元数值计算理论对不同土质条件和墙体高度条件下的基坑和回填施工情况进行建模研究,分析了不同土体条件和墙体高度以及施工方法对侧土压力、墙位移、墙体弯矩的影响。研究结果表明:施工方法对作用在墙体上的总侧向土压力的影响不大,对墙体变形和墙体弯矩有显著影响;地基土壤的坚硬程度对墙体变形有着重要的影响,地基土较松时的最大墙体变形比地基土较强时大。In view of the relatively low system stiffness of cantilever or anchored sheet pile wall used to provide lateral soil support,and the relatively large deformation of sheet pile wall,the numerical method of Continuum mechanics is used to model the construction of foundation pit and backfill under different soil conditions and wall heights with the help of finite element numerical theory of computation.This paper analyzed and studied the effects of different soil conditions,wall heights,and construction methods on lateral soil pressure,wall displacement,and wall bending moment.The research results indicate that the construction method has little effect on the total lateral soil pressure acting on the wall,but has a significant impact on the deformation and bending moment of the wall.The hardness of the foundation soil also has an important impact on the deformation of the wall.The maximum wall deformation is greater when the foundation soil is loose than when the foundation soil is strong.

关 键 词：锚固板桩墙 有限元法 侧土压力 墙位移 墙体弯矩 

分 类 号：TU753[建筑科学—建筑技术科学]