深厚压缩层地基条件下桩筏基础路基沉降特性研究  

Research on the Settlement Characteristics of Subgrade with Piled Raft Foundation under Conditions of Thick Compressible Foundation

作　　者：崔维孝[1] 

机构地区：[1]铁道第三勘察设计院集团有限公司,天津300142

出　　处：《铁道工程学报》2009年第4期9-12,25,共5页Journal of Railway Engineering Society

摘　　要：研究目的:研究深厚压缩层地基条件下桩筏基础路基沉降特性,提出沉降计算及参数选取方法,供高速铁路路基沉降控制设计参考。研究结论:单桩承载及沉降变形特性与群桩具有明显区别,通过测试得到的加固区沉降实际上是由于桩对下卧层的刺入引起的,在桩筏结构沉降分析中应优先选用Geddes法。Research purposes： This paper researched the settlement characteristics of subgrade with piled raft foundation under conditions of thick compressible foundation and put forward the methods of settlement calculation and parameter selection, which can be used to design reference of settlement control of high speed railway subgrade. Research conclusions： There are obviously different about bearing and settlement distortion characteristics between single pile and pile group. The settlement obtained by testing in reinforced area is caused actually by the stab deformation （ piles pierce into substratum）. The Geddes should be preferred to use in settlement analysis of the piled raft foundation.

关 键 词：深厚压缩层 桩筏基础 路基 沉降特性 

分 类 号：TU433[建筑科学—岩土工程]