›› 2017, Vol. 38 ›› Issue (2): 534-540.doi: 10.16285/j.rsm.2017.02.029

• 基础理论与实验研究 • 上一篇    下一篇

基于数据新旧程度和预测取值区间调整的沉降组合预测方法

曹文贵,印 鹏, 贺 敏,刘 涛   

  1. 湖南大学 岩土工程研究所,湖南 长沙 410082
  • 收稿日期:2015-05-26 出版日期:2017-02-11 发布日期:2018-06-05
  • 作者简介:曹文贵,男,1963年生,博士(后),教授,博士生导师,主要从事岩土工程教学与研究工作。
  • 基金资助:

    国家自然科学基金项目(No. 51378198);高等学校博士学科点专项科研基金(No.20130161110017)。

A combination method for predicting settlement based on new or old degree of data and adjustment of value interval of prediction

CAO Wen-gui, YIN Peng, HE Min, LIU Tao   

  1. Institute of Geotechnical Engineering, Hunan University, Changsha, Hunan 410082, China
  • Received:2015-05-26 Online:2017-02-11 Published:2018-06-05
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (51378198) and the Research Fund for the Doctoral Program of Higher Education of China (20130161110017).

摘要: 工后沉降预测是建筑物地基或路基的安全性评价及其加固维护方案决策的重要依据。为此,引入组合预测思想,首先通过探讨实测沉降数据新旧程度对工后沉降预测效果的影响规律,引入新鲜度函数,建立出考虑实测沉降数据新旧程度对沉降预测影响的分析模型;其次,通过研究沉降组合预测可能取值的变化规律,引进平行修正的思路,建立出有利于提高沉降组合预测精度的组合预测可能取值区间的调整方法;然后,在此研究基础上,提出了同时考虑实测沉降数据新旧程度和组合预测可能取值区间调整,对沉降预测效果影响的改进工后沉降组合预测新方法。最后,通过工程实例计算与比较分析,表明了改进的工后沉降组合预测方法的合理性与可行性。

关键词: 工后沉降, 沉降预测, 组合预测, 新鲜度函数, 组合预测取值区间调整, 平行修正

Abstract: The prediction for post-construction settlement of building foundation or roadbed is an important basis for its safety assessment and the determination of maintenance strategy. Therefore, firstly, a methodology of combination prediction is introduced in this paper. By considering the effect of new or old degree of the measured settlement data on the prediction of post-construction settlement, an analytical model is developed by introducing a fresh-degree function, which can reflect the effect of the new or old degree of measured settlement data on prediction. Secondly, using parallel-modification, a method of the adjustment of value interval for combination prediction is proposed through analyzing the variations of the possible combination prediction, to improve the precision of the prediction. And then, on the basis, an improved model for combination prediction of post-construction settlement is established, which can simultaneously describe the effect of new or old degree of the measured data and the effect of adjustment of value interval for combination prediction on settlement prediction. Finally, the proposed method is used to analyze the practical engineering examples, which demonstrates that the method is feasible and reasonable.

Key words: post-construction settlement, settlement prediction, combination prediction, a fresh degree function, adjustment of value interval for combination prediction, parallel-modification

中图分类号: 

  • TU 470

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