高层建筑刚性桩复合地基在软土地层中的应用  

Application of Rigid Inclusion Composite Foundation of High-Raised Buildings in Soft Soils

作　　者：扈学波 王正安 HU Xuebo;WANG Zhengan(JinanRailTransitGroup,Jinan250000)

机构地区：[1]济南轨道交通集团有限公司,济南250000

出　　处：《土工基础》2024年第3期415-418,448,共5页Soil Engineering and Foundation

摘　　要：刚性桩复合地基在软弱土层中广泛应用,用作各类建筑物、公路基础,但在高层建筑中,作用于基础的荷载较大,地层过于软弱时,考虑复合地基相互作用的复杂性,复合地基承载力容易出现问题。通过工程实例,结合实际工程中出现的问题,采用相关的试验和数值模型计算进行原因分析,得出不同土层条件下复合地基的承载力,以及作用于单桩和桩间土荷载情况,同时考虑在软土地层中刚性桩施工容易出现各类质量题问,对施工人员经验水平要求较高,质量缺陷处理较为困难,不建议在过于软弱的地层中采用刚性桩复合地基作为高层建筑基础。The rigid pile composite foundation is widely used in soft soils as the foundation of various buildings and highways.But in high-rise buildings,the load acting on the foundation is large,and when the local stratum is too weak,considering the complexity of the composite foundation interaction,the bearing capacity of composite foundation is usually having problems.This paper presents a case history of the application of rigid inclusion composite soil as the foundation for a high-raised building by using the relevant tests and the numerical analysis methods.The bearing capacity of the composite foundation under different soil layers and the soil load acting on the single pile and among piles are obtained.At the same time,considering that the construction of rigid inclusion in soft soil layer is usually have different quality problems,which requires a high level of experience of construction personnel and is difficult to deal with quality defects.It is not recommended to use rigid inclusion composite foundation as the foundation for the high-raised buildings in the too weak soil strata.

关 键 词：刚性桩复合地基 软土 

分 类 号：TU472[建筑科学—结构工程]