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《淺談深基坑圍護(hù)結(jié)構(gòu)變形規(guī)律監(jiān)測(cè)及其優(yōu)化研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、西安科技大學(xué)碩士學(xué)位論文深基坑圍護(hù)結(jié)構(gòu)變形規(guī)律監(jiān)測(cè)及其優(yōu)化研究姓名：池鵬申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：巖土工程指導(dǎo)教師：任建喜20080415論文題目：專(zhuān)業(yè)：碩士生：指導(dǎo)老師：深基坑圍護(hù)結(jié)構(gòu)變形規(guī)律監(jiān)測(cè)及其優(yōu)化研究巖土工程池鵬(簽名)泌董：任建喜(簽名)厶遜摘要地鐵車(chē)站深基坑開(kāi)挖工程是地鐵建設(shè)中一個(gè)重要課題，開(kāi)展深基坑圍護(hù)結(jié)構(gòu)變形規(guī)律現(xiàn)場(chǎng)監(jiān)測(cè)及其優(yōu)化研究具有重要的工程應(yīng)用價(jià)值。主要工作有：本文以北京地鐵大屯路公交換乘車(chē)站為依托，采用理論分析和現(xiàn)場(chǎng)監(jiān)測(cè)結(jié)合的方法，對(duì)地鐵車(chē)站深基坑的變形機(jī)理及破壞模式進(jìn)行了分析，得出了影響深基坑穩(wěn)定的主要因素，給出了地鐵車(chē)站深基坑圍護(hù)結(jié)構(gòu)設(shè)計(jì)方案和施工監(jiān)測(cè)
2、方案，完成現(xiàn)場(chǎng)監(jiān)測(cè)。通過(guò)分析監(jiān)測(cè)數(shù)據(jù)，得到了深基坑圍護(hù)結(jié)構(gòu)中圍護(hù)樁的變形、錨索拉力變化的規(guī)律。完成了基坑施工過(guò)程FLAC模擬，完成了施工過(guò)程模擬，得到了基坑變形規(guī)律，模擬結(jié)果與現(xiàn)場(chǎng)監(jiān)測(cè)結(jié)果基本一致。根據(jù)現(xiàn)場(chǎng)實(shí)測(cè)數(shù)據(jù)對(duì)圍護(hù)樁和預(yù)應(yīng)力錨索進(jìn)行優(yōu)化設(shè)計(jì)研究，通過(guò)優(yōu)化研究對(duì)圍護(hù)樁進(jìn)行重新配筋并且對(duì)錨索進(jìn)行了重新設(shè)計(jì)，建立了研究深基坑變形規(guī)律的三維FLAC模型，考慮圍護(hù)樁、鋼支撐和錨索的共同作用，完成了優(yōu)化后基坑圍護(hù)體系變形規(guī)律的FLAC模擬研究。關(guān)鍵詞：地鐵車(chē)站；深基坑；監(jiān)測(cè)；變形；規(guī)律；優(yōu)化；設(shè)計(jì)研究類(lèi)型：應(yīng)用基礎(chǔ)研究Subject：ResearchonFieldMonitoringo
3、fDeformationRuleaboutSupportStructureandIt’SOptimizationInDeepFoundationFitEngineeringSpecialty：GeotechnicalEngineeringName：ChiPengInstructor：RenJianxi(Signature)ABSTRACTckp—Theexcavationofdeepfoundationforstationisalwaysoneofthekeyproblemsinthesubwayconstruction．Itismostvaluabletoresearchthe
4、deformationmonitoringanditsoptimumdesign．Themainjobsareasfollows：BasedontheOlympicssubwayinBeijingDatunroadbusstopdeepfoundationpitengineering，thedeformationlawsandfailuremodeofretainingstructuresareresearchedbytheoreticalanalysisandin-situmonitoring．Inthisway,thebasicfactorsthatinfluencethes
5、tabilityofdeepfoundationfitareconcluded；Thedesignplanofretainingstructureandin-situmonitoringplanofdeformationalegiven，andthein．situmonitoringworkisaccomplished．Throughtheanalysisofmonitoringdata，thelawsofdeformationofsteelsupports，horizontaldisplacementofpiles，andperforceofanchorwiresareanal
6、yzed．Meanwhile．a(chǎn)numericalsimulationbyFLAC3Disaccomplished．Aconsistencybetweentheresultofnumericalsimulationandofthesurveyin—situisreached．Basedonthesurveydatain-situ，alloptimizationdesignaboutretainingpileandprestressedanchorageiSstudied．Bywayofoptimizationmethod，theratioofreinforcementinpile
7、saswellasthecableareredesigned．Meanwhile，athreedimensionalmodelinFLACisbuildedtostudytheregulationofdeformationindeepfoundation丘t．Inthismodel．interactionamongtheretainingpiles，braceandcableinconsidered；bywayofsimulatingtheprocessofconstructio
