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1、建筑結(jié)構(gòu)學(xué)報JournalofBuildingStructures文章編號:1000-6869(2012}09-0067-07單室井筒式地下連續(xù)墻水平承載力試驗與計算方法研究戴國亮1,龔維明2,周香琴1,劉云忠'，劉立基，(1.東南大學(xué)土木工程學(xué)院，江蘇南京210096:C卄士一M、匕MIT7B宀：亠IA4-PA-t3士？r”壬h■宀訐人宀?rr-U-士士摘要:井簡式地下連續(xù)墻棊礎(chǔ)內(nèi)部含右大面積的土芯，山于存在墻內(nèi)土芯JS體以及外部土體的相互作用，其水平承載特性復(fù)雜。采用水半靜載荷試驗，進行了3個不同截面尺寸單室井筒式地下連續(xù)墻模型試驗。便于對比，同時進行了3個相也尺寸的單片墻模型試驗?；?/p>
2、于墻身內(nèi)力及位移測試結(jié)果，研究了單室井筒式地下連續(xù)墻基礎(chǔ)的水半承載特性，分析了水呼荷載T立移特性.土壓力-位移的分布規(guī)律，結(jié)果表明：單室井筒式地I、-連續(xù)墻基礎(chǔ)呈整體傾斜破壞特性，前墻外側(cè)土壓力對承載力貢獻最人。結(jié)合模型試驗特征，分別釆用4種彈簧的彈性基礎(chǔ)分析法和8種彈簧的剛性基礎(chǔ)分析法計算單片墻與單室井筒式地下連續(xù)墻，與試驗結(jié)果吻合較好，分析方法可為設(shè)計提供參考。關(guān)鍵詞：單室井筒式地F連續(xù)墻；模型試驗；水平承載特性；分析方法中圖分類號:TU476.3TU317.1文獻標志碼:AExperimentandanalysisonhorizontalbearingcapacityofsingle
3、-chambercloseddiaphragmwallDAIGuoliang1,GONGWeimingSZHOUXiangqin1,LIUYunzhong1,LIULiji1(1SchoolofCivilEngineering,SoutheastUniversity,Nanjing210096,China;2KeyLaboratoryforRCandPRCStructuresofEducationMinistry,SoutheastUniversity,Nanjing210096,China)Abstract:Forlargesoilcoresinsidethecloseddiaphrag
4、mwall,therearecomplicatedinteractionsamongsoilcore,wallsandexternalsoilincloseddiaphragmwallfoundationBasedonlateralstatictestsonthreesingle-chambermodelwallswithdifferentsizes,thebearingcharacteristicofcloseddiaphragmwallfoundationaswellassingletraditionaldiaphragmwallwereinvestigated.Onthebasiso
5、ftheresultsaboutinternalforcesanddisplacementofthediaphragmwalls,thepaperpresentedthemechanismofthebearingcapacityunderthelateralload,theload-displacementcharacteristicsofthewall,andtherelationshipbetweensoilresistaneeanddisplacement.Theresultsshowtheoveralltiltingfailurecharacteristicofthewallund
6、erthelateralloadingThesoilresistaneeoutsidethefrontwallisthemaincontributiononthebearingcapacity.Combinedw讓hthefailurecharacteristic,eight-springrigidmethodwasadoptedtoanalyzethesingle-chambermodelwallandfour-springelasticmethodwasusedtoanalyzethetraditionaldiaphragmwall?Thecalculatedresultsagreew
7、ellwiththeexperimentalresults,whichcanbeareferencetothedesignofthecloseddiaphragmwallKeywords：single-chamberdiaphragmwall;modeltest;horizontalbearingcharacteristic;analysismethod基金項冃：國家白然科學(xué)基金項冃(50908048：o作者簡介:戴國亮
