深基坑水平位移监测数据分析及预测模型研究

Research on Monitoring Data Analysis and Prediction Model of Horizontal Displacement of Deep Foundation Pit

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ResearchonMonitoringDataAnalysis and PredictionModelof Horizontal Displacement of DeepFoundationPit

中图分类号：TU433 文献标志码：A 文章编号：1005-8249（2025）01-0065-05

DOI：10.19860/j.cnki.issn1005-8249.2025.01.013

LIU Hailong

(Nanchang Construction Engineering Comprehensive Supervision Center，Nanchang 33OO38，China) Abstract：Toaccuratelygraspthevariationlawofhorizontaldisplacementindeepfoundationpits，basedonthemeasured deformationdataofacertainenginering site，statistical methodsarefirstused toanalyeitsdeformationcharacteristics.Then， dynamic weight particle swarmoptimizationalgorithm，adaptive fuzzyneural network，andlimit learning mechanismarefurther usedtobuildadeformationpredictionmodeltostudythepredictionof horizontaldisplacementinfoundationpits.Theresults show that the horizontal displacement range of the engineering example foundation pit is 23.84～31.96 mm ， with an average value of $29.03\mathrm{\mm}$ ，and the maximum horizontal displacement is mainly located at 0，74H ；The relative error range of the deformation prediction results of the foundation pit is 2.02%～2.17% ，which has high prediction accuracy.The prediction model isreasonable，andthepredictionresultsshowthatthehorizontaldisplacementof the foundationpitwillcontinueto increase，buttherateof increase tends todecrease，andtheoveralldeformation tends tostabilize.Bypredicting the deformationofthefoundationpit，the horizontaldisplacementvariationlawofthefoundationpithasbeenmastered，providing technical support for its safe construction.

Key words：deep foundation pit；horizontal displacement；data analysis；deformation prediction；extreme learning machine

0 引言

在深基坑施工过程中，水平位移是基坑变形监测过程中的必测项目，其控制效果可作为基坑支护结构安全性评价的重要依据，因此，开展深基坑水平位移研究具有重要意义[1-2]。（剩余6577字）