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1、鄭州大學(xué)畢業(yè)設(shè)計(jì)題目：40m預(yù)應(yīng)力混凝土簡支T型梁橋設(shè)計(jì)（凈-14+2×1.75m人行道）指導(dǎo)教師：職稱：學(xué)生姓名：學(xué)號(hào)：專業(yè)：院（系）：完成時(shí)間：年月日摘要本設(shè)計(jì)從最基本的設(shè)計(jì)方法入手，重點(diǎn)進(jìn)行了主梁的設(shè)計(jì)，掌握了主梁的設(shè)計(jì)方法，其它部分的設(shè)計(jì)就可以仿照主梁設(shè)計(jì)進(jìn)行。本設(shè)計(jì)的主要內(nèi)容如下：縱橫斷面布置：根據(jù)規(guī)范要求和工程實(shí)踐經(jīng)驗(yàn)確定主梁間距與主梁片數(shù)和主梁高度及各截面主要尺寸。主梁設(shè)計(jì)：內(nèi)力計(jì)算由恒載內(nèi)力和活載內(nèi)力計(jì)算組成。恒載內(nèi)力由結(jié)構(gòu)力學(xué)可求出，而活載內(nèi)力計(jì)算時(shí)要利用按修正偏心壓力法計(jì)算得出的荷載橫向分布系數(shù)。根據(jù)計(jì)算
2、得出的各種內(nèi)力組合確定設(shè)計(jì)控制內(nèi)力進(jìn)而對(duì)預(yù)應(yīng)力鋼束數(shù)進(jìn)行估算。按后張法制作主梁，采用直徑70mm的預(yù)埋鐵皮波紋管和OVM錨固，計(jì)算各種預(yù)應(yīng)力損失得出有效預(yù)應(yīng)力，對(duì)主梁進(jìn)行強(qiáng)度、應(yīng)力和變形驗(yàn)算。橫隔梁設(shè)計(jì)：設(shè)置橫隔梁是為了保證各主梁共同受力和加強(qiáng)結(jié)構(gòu)整體性，本設(shè)計(jì)中采用偏心壓力法進(jìn)行橫隔梁計(jì)算。鑒于橋梁跨中處橫隔梁受力最大，只計(jì)算跨中橫隔梁內(nèi)力，其余橫隔梁可依據(jù)中橫隔梁偏安全地選用相同的截面尺寸和配筋。行車道板設(shè)計(jì)：本設(shè)計(jì)中行車道板的受力圖示為單向板。關(guān)鍵詞：T形梁；預(yù)應(yīng)力；混凝土橋ABSTRACTThisdesignbegi
3、nswithbasicmethodandgivesmostcontenttothedesignofmainbeams.Whenthemethodofmainbeamsdesigningismastered,wecangoonthedesigningofotherparts.Themaincontentofthisdesignisasfollowings:Thearrangeoflongitudinalsectionandlateralsection：Accordingtothespecificationandtheexper
4、ienceofpracticalengineering,wecandecidethedistanceofgirders,thenumberofthegirders,theheightofthemainbeamsandthemainsizeofeachsection.Mainbeamsdesign：Internalforcesincludeinvariableforceandvariableforce.Wecanusethemethodofthestructuralmechanics.Tocalculatethevariabl
5、einternalforce,wecalculatethelateraldirectioncoefficientoftheloadwiththemethodofcorrectedeccentricitypressures.withtheresultofthecalculation,wecanobtainthecontrolinternalforce,andwecanapproximatelydecidethenumberofthepre-stressedconcreteband.designthemainbeamswithp
6、ost-tensioningmethod,selectingpre-burrycorrectedtube(F70)&OVManchoring.Thencalculatethelossofthepre-stressandobtainthevalidpre-stressandexaminethestrength,stress,andtransformofthemainbeams.Crossingbeamdesigning：Tomakesurethatallmainbeamsreartheloadtogetherandtoenha
7、ncetheglobalityoftheconstruction,thisdesigngoesonthecrossingbeamcalculationwiththemethodofcorrectedeccentricitypressures.Weonlycalculatetheinternalforceofthemiddlecrossingbeambecauseofthemaximumforceisintheplaceofthemiddleofthespan.Drive-wayplankdesigning：Inthisdes
8、ign,theforcediagramofthedrive-wayplankissingledirectionplank.Keywords:T-beam；pre-stress；concretebridge目錄摘要IABSTRACTII1緒論31.1預(yù)應(yīng)力混凝土簡支梁橋的構(gòu)造特點(diǎn)31.2發(fā)展
