基坑變形的神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)與有限元分析.pdf

1、⑨申請(qǐng)|司濟(jì)大學(xué)工程碩士學(xué)位論文y785627岡降六嗲基坑變形的神經(jīng)網(wǎng)絡(luò)預(yù)測(cè)與有限元分析碩士生：專(zhuān)業(yè)領(lǐng)域：校內(nèi)導(dǎo)師：校外導(dǎo)師：王琳建筑與土木工程李鏡培教授方向明二零零五年六月AbS：tractABSTRACTAsaresultofdevelopmentofmodemizationandcivilization，theexploitationandutilizationofovergroundspacebecomemoreandmored

2、ifficultSopeoplefocusontheexploitationoftheundergroundspace，graduallyAllkindsofundergroundprojectsspringoutinmanymegapolisintheworldandlotsofexcavationprojectstakeplaceMeanwhile，manygeo—environmentalproblemscomeintobeing

3、Asaresultofmostofexcavationprojectslocateattheplacewherebuildingsandlifelinesaredense，itisveryimportanttonotonlyguaranteethestabilityofprojectsbutmakethedisplacementsofthesurroundingsoilundercontrolandassurethesafetyofth

4、esurroundingsforgeotechnicaiengineersFirstlythispapernlakeareviewofthedevelopmentofexcavationandintroduceseveralanalysesmethodsofexcavationberiflySecondlyhereinthespringupof“softscience”suchaSneuralnetworkmethod，paperint

5、roducetheprincipleoftheneuralnetworkmethodandhowtoutilizetheBPneuralnetworkdepictthehorizontaldisplacementsoftheretainingstructureFurthermore，paperutilizestheBPneuralnetworkmethodtodesignaprogramtodepictthehorizontaldisp

6、lacementsoftheretainingstructureIntheSouthPudongroadundergroundintersectionprojects，itisprovedthatthemethodisfeaSible。FinallypaperanalysesthecoarseoftheexcavationinfiniteelementmethodinAnsysprogramandmainlymakeacontrasto

7、fthehorizontaldis試acementsoftheretainingstructurebetweeninFEMandobservationdataThispaperadoptstheBPneuralmethodtodepictthehorizontaldisplacementsoftheretainingslxuctureandfiniteelementmethodtosimulatetheprocessofexcavati