在地下水位下降引起单桩负摩阻力及沉降数值的分析  

numerical analysis of negative friction and settlement of single pile induced by ground water falling

作　　者：谭黎明 TAN Liming(Kunming Survey&Design Institute of State Forestry and Grassland Administration,Kunming 650031)

机构地区：[1]国家林业和草原局昆明勘察设计院,云南昆明650031

出　　处：《福建建筑》2024年第2期89-93,共5页Fujian Architecture & Construction

摘　　要：利用大型通用有限元软件ABAQUS,建立单桩负摩阻力数值计算模型,着重研究地下水位下降时软弱地基中摩擦型单桩的负摩阻力性状。同时,分析了地下水位下降对摩擦型单桩负摩阻力、中性点位置、桩周土沉降、桩顶沉降发展规律的影响。上述研究的结论,对桩基础设计具有一定的借鉴意义。The numerical calculation model for the negative friction resistance of a single pile is established using the large-scale general finite element software ABAQUS.Emphasis is placed on studying the negative friction resistance of a frictional single pile in weak foundations when there is a drop in groundwater levels.Additionally,an analysis is conducted on the influence of groundwater level drops on the development pattern of negative friction resistance,neutral point position,soil settlement around the pile,and pile tip settlement.The findings from this research have significant implications for designing pile foundations.

关 键 词：单桩负摩阻力 地下水 沉降 中性点 数值分析 

分 类 号：TU473.1[建筑科学—结构工程]