堆填土固结对桩基础影响的三维模拟分析  

3D simulation analysis of the landfill soil consolidation effect on pile foundation

作　　者：刘星 

机构地区：[1]深圳市勘察测绘院有限公司,广东深圳518000

出　　处：《湖南文理学院学报（自然科学版）》2017年第3期79-82,共4页Journal of Hunan University of Arts and Science(Science and Technology)

摘　　要：基于比奥固结理论,结合已有地质资料建模,模拟了桩基础在不同堆填距离、时间下受堆填土荷载作用后的受力和位移。结果显示,随着堆填土离桩基础距离和固结时间的变化,桩顶沉降、水平位移、最大剪应力和横梁应力也发生相应的变化,随着堆填距离增加和固结时间的持续,桩顶沉降、水平位移、最大剪应力和横梁应力出现不同规律的增大。该结果表明桩基础附近长时间堆填土体,且堆填距离太小将造成桩基础的损坏,因此,堆填土对桩基础的影响是不容忽视的。Based on Biot’s consolidation theory, and according to the model as well as the existing geological data, the stress and displacement of the pile foundation is simulated under the load of landfill soil in different conditions. The results show that the pile top settlement, horizontal displacement, shear stress and beam stress have corresponding change with the change of the distance between pile foundation and the landfill soil and the consolidation time. With the increase of filling distance and the consolidation time, the settlement of pile top, horizontal displacement, maximum shear stress and beam stress appear to be different enlargement. It is confirmed that the influence of landfill soil on pile foundation is not to be ignored. Landfill soil with a long time will cause damage to the pile foundation.

关 键 词：堆填土 桩基础 比奥固结理论 淤泥质土 

分 类 号：TU42[建筑科学—岩土工程]