3D Finite element analysis of vacuum preloading considering inconstant well resistance and smearing effects

LIU Yong; QI Lan; LI Shao-ming; GUO Hao-yang

doi:10.16285/j.rsm.2017.05.036

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3D Finite element analysis of vacuum preloading considering inconstant well resistance and smearing effects

更新时间：2026-06-25

- 3D Finite element analysis of vacuum preloading considering inconstant well resistance and smearing effects
- Vol. 38, Issue 5, Pages: 1517-1523(2017)
- 作者机构：
  
  1. 中国电建集团成都勘测设计研究院有限公司造价中心
  2. 天津大学水利工程仿真与安全国家重点实验室
  3. 杭州市水利规划研究与科技推广中心
  4. 中国电建集团西北勘测设计研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.05.036
  CLC： TU472.33
- Published：2017
- 稿件说明：
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[1]刘勇,戚蓝,李少明,郭浩洋.考虑变井阻和涂抹效应的真空预压三维有限元分析[J].岩土力学,2017,38(05):1517-1523.

LIU Yong, QI Lan, LI Shao-ming, et al. 3D Finite element analysis of vacuum preloading considering inconstant well resistance and smearing effects[J]. 2017, 38(5): 1517-1523.
[1]刘勇,戚蓝,李少明,郭浩洋.考虑变井阻和涂抹效应的真空预压三维有限元分析[J].岩土力学,2017,38(05):1517-1523. DOI： 10.16285/j.rsm.2017.05.036.

LIU Yong, QI Lan, LI Shao-ming, et al. 3D Finite element analysis of vacuum preloading considering inconstant well resistance and smearing effects[J]. 2017, 38(5): 1517-1523. DOI： 10.16285/j.rsm.2017.05.036.

摘要

真空预压工程中塑料排水板等竖井通水量随地基深度和固结时间而变化

即变井阻效应已经证明是实际存在的。另一方面

在真空预压工程三维有限元分析中

由于竖井和涂抹区在有限元模型中的划分使得三维有限元模拟较为困难。为真实模拟真空预压工程实际情况

在有限元分析中引入变井阻数学模型

并给出变井阻无量纲参数A

、α

。另外

为降低三维有限元建模难度

选用合适的网格单元简化竖井区

并用等效方法简化涂抹区

实现了考虑涂抹、变井阻效应的三维有限元分析。以天津港某围海造陆工程为例

建立三维有限元模型进行分析计算

对比分析计算值与实测数据

验证了程序的合理性

为以后软基加固工程三维有限元模拟提供了一种有效方法。

Abstract

The inconstant well resistance effect

namely the changing discharge capacity of PVD with the foundation depth and consolidation time

is observed in drainage well under the vacuum preloading condition. Meanwhile

the partition of vertical drain zone and smear zone in 3D model is another challenging problem of finite element simulation. In order to simulate the actual conditions of vacuum preloading

a model with dimensionless parameters A

and α

considering well resistance in 3D finite element analysis is developed in this paper. An adaptive grid unit simplifies the drain zone and an equivalent method simplifies smear zone in simulation. Th

e proposed procedure is applied to build the 3D finite element model of the reclamation project in Tianjin Port

and is verified by comparisons between the calculated data and the observed data.

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Related Institution

Key Laboratory of Soft Soils and Engineering Environment of Tianjin, Tianjin Chengjian University

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Anhui Provincial Key Laboratory of Water Science and Intelligent Water Conservancy

CCCC Third Harbor Scientific Research Institute Co., Ltd.

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