Problems and their solutions in predicting soft ground settlement based on Asaoka’s method

HUANG Guang-jun

doi:10.16285/j.rsm.2016.04.019

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Problems and their solutions in predicting soft ground settlement based on Asaoka’s method

更新时间：2026-06-25

- Problems and their solutions in predicting soft ground settlement based on Asaoka’s method
- Vol. 37, Issue 4, Pages: 1061-1065(2016)
- 作者机构：
  
  广东省深圳市龙华新区建设管理服务中心,广东,深圳,518102
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2016.04.019
  CLC： TU470
- Online First：09 June 2018，
  
  Published：2016
- 稿件说明：
移动端阅览
HUANG Guang-jun. Problems and their solutions in predicting soft ground settlement based on Asaoka’s method[J]. 2016, 37(4): 1061-1065.
DOI：

HUANG Guang-jun. Problems and their solutions in predicting soft ground settlement based on Asaoka’s method[J]. 2016, 37(4): 1061-1065. DOI： 10.16285/j.rsm.2016.04.019.

摘要

采用Asaoka法对深圳某工程实例的地基工后沉降进行预测，发现选取不同的起始点和时间间隔时，其预测结果相差有3倍之多。因此，用数学方法对预测地基沉降的Asaoka法的表达式进行分析，探讨其拟合参数的误差对沉降预测结果的影响，提出了拟合参数误差放大系数的概念，并对预测结果的可靠性进行分析和评估。分析结果表明：影响Asaoka法沉降预测结果稳定性的一个主要原因是其预测沉降的表达式对拟合参数?1过于敏感，而且敏感性随着?1的增大而增大，因此，在保证线性拟合良好的前提下，增大离散点的时间间隔，可减小?1，从而有效减轻?1的误差对预测结果的影响；采用Asaoka法预测沉降时，不能单凭线性拟合的好坏来判断一个预测结果的可靠性，还需要考虑拟合参数的误差放大系数的大小。

Abstract

In applying Asaoka’s method to predict the post-construction settlement of a road foundation in Shenzhen

it was found that the predicted results can be different by three times

depending upon the chosen initial time and time spacing. In this paper

the mathematical formulation of Asaoka’s method is analyzed and the effect of the error of fitting parameters on the predicted results is discussed

from which the concept of the error amplification coefficient of fitting parameters is defined. The reliability of predicted results by Asaoka’s method is evaluated. The results show that one of the major reasons that affect the predicted results of Asaoka’s method is that the expression of settlement prediction is very sensitive to the fitting parameter ?1

and the sensitivity increases with the increase of ?1. Hence

without scarifying the accuracy of the linear fitting method

the time spacing is increased

and ?1 can be reduced

so that the influence of the fitting parameter error on the predicted results can be effectively reduced. In predicting the foundation settlement based on Asaoka’s method

the reliability of prediction is not only dependent upon the accuracy of linear fitting

but also on the error amplification coefficient of fitting parameters.

关键词

Keywords

references

Views

239

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Field test and numerical simulation of deformation characteristics of embankment on soft ground under different filling speeds

Study of influence of surcharge load on lateral displacement of bridge piled foundation in soft ground

Study of mechanical properties of X-section cast-in-place concrete pile under arbitrary direction lateral load (I): moment of inertia

A multivariable grey model based on background value optimization and its application to subgrade settlement prediction

Experimental study on the definition and evolution characteristics of unfrozen water retention states in frozen clay

Related Author

KONG Gang-qiang

ZHANG Chi

LI Zhi-wei

CHEN Bao-guo

LUO Rui-ping

XU Ying

ZHOU Hang

KONG Gang-qiang

Related Institution

College of Civil and Transportation Engineering, Hohai University

Key Laboratory for Geomechanics and Embankment Engineering of Education Ministry , Hohai University

Fujian Key Laboratory of Green Building Technology, Fujian Academy of Building Research

Hubei Institute of Building Research and Design

Engineering Faculty, China University of Geosciences

AI问答

⁰