桩身尺寸对超长摩擦桩承载性状的影响  

Effects of Pile Dimension on Loading Behavior of Lengthy Friction Pile

作　　者：张齐兴[1] 沈小金 储呈冬 

机构地区：[1]河海大学农业工程学院 [2]江苏广业工程建设监理有限公司,江苏南京210024

出　　处：《水电能源科学》2008年第2期122-125,共4页Water Resources and Power

摘　　要：基于三维有限元方法,以苏通大桥索塔地基中的粉细砂层为地基土,并假定为半无限均质地基,研究了超长桩桩长、桩径对超长摩擦桩承载性状的影响。计算结果表明,增大入土桩长或桩径,桩顶极限荷载和桩侧极限阻力均增大。Base on three-dimensional finite element method （3D FEM）, the effects of lengthy friction pile＇s length and diameter on its loading behavior were investigated. In order to avoid more complex analysis, the foundation soil was assumed to be homogeneous silty sand in semi-infinite space, and it is the same with that in Sutong Large Bridge Engineering. The calculating results indicated that increasing any of pile length and diameter may result in increasing both of the critical load applied on its top and the total frictional resistance acting on its side.

关 键 词：超长摩擦桩 承载性状 桩长 桩径 

分 类 号：TU473.1[建筑科学—结构工程]