斜向荷载作用下桩群中设置斜桩对其沉降的影响分析

Effect analysis of battered pile on the settlement of pile group under inclined loadings

斜向荷载作用下桩群的设置方式对其承载力和沉降有较大影响.为揭示这一影响规律,采用非线性有限元软件对斜向荷载作用下桩群中设置的斜桩进行三维建模,分析了斜桩的倾角、桩-土弹性模量、斜桩桩长以及桩数等因素对群桩沉降的影响.结果表明:地基土质情况、斜桩的倾角、刚度和桩长与桩数等对倾斜群桩的沉降影响较大,所得结论对斜向荷载作用下群桩基础的设计与施工具有一定的指导意义.

The setting mode of pile group has much effect on pile group’s bearing capacity and settlement under inclined loadings.In order to reveal this effect,the nonlinear finite element software is used and a 3-D model is developed to simulate the battered pile group under inclined loadings.The effect of inclined angle,pile-soil elastic modulus,battered pile length and number,etc.,on the settlement of battered pile group,is analyzed.The results indicate that： the geometry of soil,the inclined angle of battered pile,pile rigidity,length and number,etc.,has much effect on the settlement of battered pile group.Some useful conclusions are obtained for the design and construction of pile group that subjected to inclined loadings.