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

发布时间：2018-04-22 11:47

本文选题：工后沉降 + 沉降预测　；参考：《岩土力学》2017年02期

【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。
[Abstract]:The prediction of post-construction settlement is an important basis for the evaluation of the safety of building foundation or subgrade and the decision of reinforcement and maintenance scheme. Therefore, by introducing the idea of combination forecasting, the influence of the new and old degree of measured settlement data on the effect of post-construction settlement prediction is discussed, and the freshness function is introduced. An analytical model considering the influence of the new and old degree of the measured settlement data on the settlement prediction is established. Secondly, by studying the variation law of the possible values of the settlement combination prediction, the idea of parallel correction is introduced. An adjustment method is established to improve the accuracy of the combined settlement prediction, and then, on the basis of the research, it is proposed that the new and old degree of the measured settlement data and the adjustment of the range of the possible values for the combination prediction should be taken into account at the same time. A new method of combined prediction of settlement after construction is improved on the effect of settlement prediction. Finally, the rationality and feasibility of the improved composite prediction method of post-construction settlement are demonstrated by the calculation and comparative analysis of engineering examples.
【作者单位】：湖南大学岩土工程研究所;
【基金】：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)~~
【分类号】：TU433

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