Theoretical analysis of combined action of cushion and embankment fills in pile-supported embankment

TAN Hui-ming; LIU Han-long

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Theoretical analysis of combined action of cushion and embankment fills in pile-supported embankment

更新时间：2026-06-25

- Theoretical analysis of combined action of cushion and embankment fills in pile-supported embankment
- Vol. 29, Issue 8, (2008)
- 作者机构：
  
  1. 岩土力学与堤坝工程教育部重点实验室,南京,210098
  2. 河南大学岩土工程科学研究所,南京,210098
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU473
- Online First：02 August 2013，
  
  Published：2008
- 稿件说明：
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TAN Hui-ming, LIU Han-long. Theoretical analysis of combined action of cushion and embankment fills in pile-supported embankment[J]. 2008, 29(8).
DOI：

TAN Hui-ming, LIU Han-long. Theoretical analysis of combined action of cushion and embankment fills in pile-supported embankment[J]. 2008, 29(8). DOI：

摘要

从桩承加筋路堤中加筋褥垫层与路堤填土共同作用的实际情况出发，利用弹性力学对路堤填土单元进行了力学平衡分析，同时考虑到加筋褥垫层的工作状态类似于连续梁板的特性，根据PCC桩承加筋路堤的设计参数及现场测试结果，将现浇混凝土薄壁管桩（PCC）桩承加筋路堤中的加筋褥垫层视为弹性薄板，再根据薄板小挠度理论，推导出了桩土差异沉降等计算公式。又根据填土与褥垫层变形协调、应力连续的条件，在忽略褥垫层材料本身压缩量的前提下将加筋褥垫层变形分析与填土变形分析相结合，提出了求解填土等沉面高度、桩土应力、桩土差异沉降的方法，最后通过与现场实测结果对比，验证了方法的正确性。

Abstract

The geosynthetic-reinforced cushion in pile-supported embankment works as a beam or plate

taking the characteristic of PCC pile composite foundation into account

therefore the reinforced cushion is considered to be an elastic thin sheet for calculation; and the formula of differential settlement between pile and soil has been drawn by using the thin sheet small deflection theory. On the basis of the compatible deformation between cushion and landfill

the methods of calculating the height of uniform settlement plate in landfill and stress ration between pile and soil have been got

but the compression of cushion material has been ignored. Finally

the comparison between calculated result and measured result shows that the formulas are acceptable. This method is also adaptable for other rigid pile-supported embankment.

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