基坑開挖影響下臨近地下管線的力學(xué)行為分析
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中圖分類號：TU473.2 文獻(xiàn)標(biāo)志碼：A 文章編號：1005-8249（2025）03-0078-06
DO1：10.19860/j.cnki.issn1005-8249.2025.03.015
Abstract：Inorder tostudytheinfluenceofdepfoundationpitexcavationonthemechanicalbehaviorofadjacentunderground pipelines inthesoftsoilareaof Nanjing，thedeformationlawofundergroundpipelinesindiferentsituationsisanalyzedby numerical simulation methodconsideringthecomplexconditions intheprocessoffoundation pitexcavation.Theresultsshow that：theverticaldisplacementandbending momentoftheunderground pipelineshowsymmetrical distribution，andreachthe peakvalueonthesymmetrical surfaceof thepitexcavation；theinfluenceof pipelinediameter，pipelinematerial，and horizontaldistancefromtheedgeofthepitonthemechanicalbehaviorofthepipelineisrevealed；whenthehorizontaldistance betwenthe pipelineandtheedgeof thepitisincreased，thedisplacementandbending momentof thepipeline show the tendencyto increasefistlyandthen decrease，andthedisplacementand bending momentof the pipelinereach the maximum valueathedistanceofO.5timesofthedepthof hepitexcavation.AtadistanceofaboutO.5timesofthepitexcavationdepth， thedisplacement andbending moment of the pipeline reach the maximum value.Through thein-depth studyof these key
parameters，itcanefectivelyguidethepipelineprotectionandmonitoringwork intheactual projecttoensurethesafetyand stability of underground pipelines.
Key Words： foundation pit excavation；pipeline；numerical simulation； single factor analysis
0 引言
隨著城市的發(fā)展，地上建筑用地日趨緊張，城市建設(shè)逐漸轉(zhuǎn)向地下空間發(fā)展，與之相應(yīng)的深基坑工程日益增多。（剩余6275字）