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1、湖南科技大學(xué)瀟湘學(xué)院本科生畢業(yè)設(shè)計(jì)(論文)摘要本設(shè)計(jì)為九江大橋引橋上部結(jié)構(gòu)設(shè)計(jì)。該橋全長(zhǎng)150m,設(shè)計(jì)的跨徑為25m,截面為單箱單室的等截面形式。整個(gè)設(shè)計(jì)可以分成兩個(gè)部分:第一部分,結(jié)構(gòu)建摸和內(nèi)力計(jì)算。選擇橋的橋型及孔徑劃分、主梁截面形式與主梁高度的擬定、截面細(xì)部尺寸擬定,隨后進(jìn)行結(jié)構(gòu)內(nèi)力計(jì)算。在完成了恒載內(nèi)力的計(jì)算后,又進(jìn)行了活載內(nèi)力計(jì)算、次內(nèi)力計(jì)算、內(nèi)力組合計(jì)算,并畫出內(nèi)力包絡(luò)圖。第二部分,預(yù)應(yīng)力鋼束估算及布置,預(yù)應(yīng)力損失及有效預(yù)應(yīng)力計(jì)算,鋼束布置后的內(nèi)力計(jì)算及組合,強(qiáng)度計(jì)算與驗(yàn)算,應(yīng)力、應(yīng)變及其它驗(yàn)算。關(guān)鍵詞:混凝土簡(jiǎn)支轉(zhuǎn)連續(xù)梁橋;單元?jiǎng)澐趾徒⒛P停粌?nèi)力計(jì)算;強(qiáng)度應(yīng)力應(yīng)變驗(yàn)算dslop
2、etofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgreaterthan1.5M,accordingtothechangesofsoil,excavation(Groove)ortrenchsupportpreparation,topreventcollapse.(2)excavation(Groove)andwhenthetrenchshouldnotdigtothedesignheightofthefollowing,ifnote
3、xactlydiggingbaseelevationistodesign,persistenceofelevationabovealayerofsoilisnotdug,tocopyafterpingdugoutbyhand.(3)mechanicalconstructiondigintotheEarth,diggingmanualatanytime,andtrolleystotransportEarthmachinerytodigtheplace,soastousethemachineryofcherry-picking.5,trimming...(1)soilexcavationonara
4、inyday,theirworkshouldnotbetoolarge,shouldbedonepiecemeal,bystaging.(2)therainatthetimeofconstructionintheexcavationandearth-movingrequiredgreatattentiontoslopestability.Ifnecessary,theappropriateslowslope,orbraces,whileinthepits(Groove)outsidesurroundedbyEarthenbermsordiggingditches,preventsurfacew
5、aterfromentering.Alwayscheckontheslope,support,anembankment,identifyproblemsanddealwith.II,backfillEngineering(a)constructionpreparationresearchfieldsiteformation,earthfillconstructionplan,determinethefillline,order,range,slope,drainagelevels,andsoon.1,theengineeringaccordingtothecharacteristicsofsp
6、ecies,densityofthefillquantityrequirements,constructionsiteconditionsofreasonablefillsoilmoisturecontrol,virtualshopandcompactionparameters,suchasnumber.2,undergroundandabove-groundpipelinesshouldbefoundoutbeforeconstructionobstacles,requirementsshallinaccordancewiththeconstructionplan,theconstructi
7、onofabovegroundandundergroundobstacleclearanceintheregionanddealt湖南科技大學(xué)瀟湘學(xué)院本科生畢業(yè)設(shè)計(jì)(論文)dslopetofacilitateemptying.(1)duringtheexcavationprocess,feelfreetocheckthestatusofsideslope,verticaldigdepthisgre