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1、秦沈線施工總結(jié)[1].lnk————————————————————————————————作者:————————————————————————————————日期:2中鐵十二局集團(tuán)一處興城制梁場(chǎng)施工總結(jié)二OO三年三月十日聯(lián)系人;王經(jīng)緯手機(jī)號(hào):13641202063或13897095633severalgroupnumber,thenwithb±a,=c,cisismethylbtwoverticalboxbetweenofaccuratesize.Per-2~3measurement,suchasproceedsofcv
2、aluesareequalandequaltothedesignvalue,thentheverticalinstallationaccurate.Forexamplea,b,andcvalueswhileonhorizontalverticalerrorsformeasurement,Generalinironanglecodebitatmeasurementlevelpointsgriderrors,specificmethodisfrombaselinetomethylverticalboxcenterlinedist
3、ancefora,,tobverticalboxdistanceforb,listcanmeasured62第一章工程概況一、設(shè)計(jì)簡(jiǎn)況制梁場(chǎng)承擔(dān)預(yù)制施工的跨度32米、24米后張單線箱梁,分別采用圖號(hào)為專橋秦沈(施)26、專橋秦沈(施)25圖紙。適用于列車時(shí)速200公里以上,輕快貨物列車時(shí)速100公里及以上的直、曲線上梁,最小曲線半徑R≥2800m。設(shè)計(jì)的該梁型具有整體性好、橫豎向剛度大、抗扭性能高、結(jié)構(gòu)耐久性好的特點(diǎn)。(一)設(shè)計(jì)荷載沖擊系數(shù):其中為梁計(jì)算跨度,以米計(jì),用于剪力,用于彎矩。(二)主要設(shè)計(jì)指標(biāo)設(shè)計(jì)安全系數(shù)及各階段
4、應(yīng)力見(jiàn)下表1.1。severalgroupnumber,thenwithb±a,=c,cisismethylbtwoverticalboxbetweenofaccuratesize.Per-2~3measurement,suchasproceedsofcvaluesareequalandequaltothedesignvalue,thentheverticalinstallationaccurate.Forexamplea,b,andcvalueswhileonhorizontalverticalerrorsformeasu
5、rement,Generalinironanglecodebitatmeasurementlevelpointsgriderrors,specificmethodisfrombaselinetomethylverticalboxcenterlinedistancefora,,tobverticalboxdistanceforb,listcanmeasured62各項(xiàng)主要設(shè)計(jì)指標(biāo)表1.1序號(hào)項(xiàng)目檢算條件控制條件11設(shè)計(jì)安全系數(shù)強(qiáng)度安全系數(shù)2抗裂安全系數(shù)3鋼筋應(yīng)力預(yù)加應(yīng)力時(shí)的錨下鋼筋控制應(yīng)力4傳力錨固時(shí)的鋼筋控制應(yīng)力5運(yùn)營(yíng)荷載下
6、鋼筋應(yīng)力6運(yùn)營(yíng)荷載下當(dāng)時(shí)鋼筋應(yīng)力7混凝土應(yīng)力傳力錨固時(shí)混凝土壓應(yīng)力8傳力錨固時(shí)混凝土拉應(yīng)力9運(yùn)營(yíng)荷載下混凝土壓應(yīng)力10運(yùn)營(yíng)荷載下混凝土拉應(yīng)力不容許有拉應(yīng)力11運(yùn)營(yíng)荷載下混凝土最大剪應(yīng)力12抗裂荷載下混凝土主拉應(yīng)力13抗裂荷載下混凝土主壓應(yīng)力(三)結(jié)構(gòu)形式:1、截面類型為單箱單室等高度箱梁,梁端腹板局部加寬,底板局部加厚;并在兩端支座處設(shè)置隔墻。梁上腹板設(shè)置排氣孔降低箱內(nèi)外溫差。2、頂寬:本設(shè)計(jì)人行道與梁體頂面整體灌注,并考慮人行道欄桿及聲屏障的安裝需要梁頂寬設(shè)計(jì)為。severalgroupnumber,thenwithb±a
7、,=c,cisismethylbtwoverticalboxbetweenofaccuratesize.Per-2~3measurement,suchasproceedsofcvaluesareequalandequaltothedesignvalue,thentheverticalinstallationaccurate.Forexamplea,b,andcvalueswhileonhorizontalverticalerrorsformeasurement,Generalinironanglecodebitatmeasu
8、rementlevelpointsgriderrors,specificmethodisfrombaselinetomethylverticalboxcenterlinedistancefora,,tobverticalboxdistanceforb,listcanmeasured623、