資源描述：
《預(yù)應(yīng)力混凝土簡(jiǎn)支t型梁橋設(shè)計(jì)》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、大學(xué)畢業(yè)設(shè)計(jì)題目：40m預(yù)應(yīng)力混凝土簡(jiǎn)支T型梁橋設(shè)計(jì)（凈-7+2×0.75m人行道）指導(dǎo)教師：職稱：教授學(xué)生姓名：學(xué)號(hào)：專業(yè)：水利水電工程（道路與橋梁方向）院（系）：水利與環(huán)境學(xué)院完成時(shí)間：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)容包括：縱橫斷面布置，主梁設(shè)計(jì)，橫隔梁設(shè)計(jì)，還有行車道板設(shè)計(jì)?？v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
2、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，采用錐型錨具和直徑50mm的抽拔橡膠管，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29
3、ABSTRACTThisdesignbeginswithbasicmethodandgivesmostcontenttothedesignofmainbeams.Whenthemethodofmainbeamsdesigningismastered,wecangoonthedesigningofotherparts.Themaincontentofthisdesignisasfollowings:Thearrangeoflongitudinalsectionandlateralsection,Mainbeamsdesign,Crossingbea
4、mdesigningandDrive-wayplankdesigning.Thearrangeoflongitudinalsectionandlateralsection:Accordingtothespecificationandtheexperienceofpracticalengineering,wecandecidethedistanceofgirders,thenumberofthegirders,theheightofthemainbeamsandthemainsizeofeachsection.Mainbeamsdesign:Int
5、ernalforcesincludeinvariableforceandvariableforce.Wecanusethemethodofthestructuralmechanics.Tocalculatethevariableinternalforce,wecalculatethelateraldirectioncoefficientoftheloadwiththemethodofcorrectedeccentricitypressures.withtheresultofthecalculation,wecanobtainthecontroli
6、nternalforce,andwecanapproximatelydecidethenumberofthepre-stressedconcreteband.designthemainbeamswithpost-tensioningmethod,selectingpre-burrycorrectedtubeanchoring.Thencalculatethelossofthepre-stressandobtainthevalidpre-stressandexaminethestrength,stress,andtransformofthemain
7、beams.Crossingbeamdesigning:Tomakesurethatallmainbeamsreartheloadtogetherandtoenhancetheglobalityoftheconstruction,thisdesigngoesonthecrossingbeamcalculationwiththemethodofcorrectedeccentricitypressures.Weonlycalculatetheinternalforceofthemiddlecrossingbeambecauseofthemaximum
8、forceisintheplaceofthemiddleofthespan.Drive-wayplankdesigning:Inthis
