CFG桩复合地基沉降量计算及沉降影响因素探析  

STUDIES ON SETTLEMENT CALCULATION AND FACTORS INFLUENCING SETTLEMENT OF CFG PILES COMPOSITE FOUNDATION

作　　者：赵幸[1] 赵德富[2] 赵其华[1] 何明亮[1] 

机构地区：[1]地质灾害防治与地质环境保护国家重点实验室(成都理工大学),成都610059 [2]四川省冶金地质勘查局水文工程大队,成都611730

出　　处：《工业建筑》2013年第S1期476-479,共4页Industrial Construction

摘　　要：在静力条件下,结合改良的沉降模式图,直观深入地分析了CFG桩复合地基沉降变形模式。将CFG桩视为半刚性桩,考虑在桩、桩间土、褥垫层和下卧层的相互协同作用下,基于桩体竖向变形协调模式,探讨CFG桩复合地基沉降量及其影响因素。系统地推导了复合地基的沉降量计算公式,细化了推导过程,更有助于理解沉降量的计算,而后对地基沉降的影响因素加以分析,重点讨论与公式有直接关系的桩长、置换率以及与公式有间接关系的外荷载、褥垫层、桩土模量比等因素。with the modified settlement pattern chart,this paper analyzed the settlement deformation pattern of CFG piles composite foundation under the static condition.Then,treating CFG piles as semi-rigid piles,it was discussed the settlement calculation of CFG piles composite foundation,deduced the computational formula of settlement scientifically in consideration of pile-soil-cushion interaction,detailing the derivation process.At last,analyze the factors of the foundation settlement were analyzed,emphasizing pile length and replacement ratio that have direct relations with the formula and applied load,mattress layer,modulus ratio of pile to soil that have indirect relations with the formula.

关 键 词：CFG桩复合地基 变形模式 沉降计算 影响因素 

分 类 号：TU433[建筑科学—岩土工程]