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1、預(yù)應(yīng)力簡支型梁橋設(shè)計(jì)摘要本次設(shè)計(jì)的題目是平遠(yuǎn)街~鎖龍寺高速公路11合同段莊田段改地方路1(K0+288.50)預(yù)應(yīng)力混凝土T型梁橋的設(shè)計(jì)。本設(shè)計(jì)采用預(yù)應(yīng)力混凝土T型梁橋,跨徑布置為(4×20)m,主梁為變截面T型梁。跨中梁高為1.33m,支點(diǎn)梁高為1.33m。橋墩為重力式橋墩、橋臺(tái)。...
摘 要
本次設(shè)計(jì)的題目是平遠(yuǎn)街~鎖龍寺高速公路11合同段莊田段改地方路1(K0+288.50)混凝土T
2、型梁橋的設(shè)計(jì)。
本設(shè)計(jì)采用預(yù)應(yīng)力混凝土T型梁橋,跨徑布置為(4×20)m,主梁為變截面T型梁。跨中梁高為1.33m,支點(diǎn)梁高為1.33m。橋墩為重力式橋墩、橋臺(tái)。
本文主要闡述了該橋的設(shè)計(jì)和計(jì)算過程。首先進(jìn)行橋型方案比選,對(duì)主橋進(jìn)行總體結(jié)構(gòu)設(shè)計(jì),然后對(duì)上部結(jié)構(gòu)進(jìn)行內(nèi)力、配筋計(jì)算,再進(jìn)行強(qiáng)度、應(yīng)力及變形驗(yàn)算,最后進(jìn)行下部結(jié)構(gòu)驗(yàn)算。
具體包括以下幾個(gè)部分:
1. 橋型方案比選;
2. 橋型布置,結(jié)構(gòu)各部分尺寸擬定;
3. 選取計(jì)算結(jié)構(gòu)簡圖;
3、
4. 恒載內(nèi)力計(jì)算;
5. 活載內(nèi)力計(jì)算;
6. 荷載組合;
7. 配筋計(jì)算;
8. 預(yù)應(yīng)力損失計(jì)算;
9. 截面強(qiáng)度驗(yàn)算;
10.截面應(yīng)力及變形驗(yàn)算;
11.下部結(jié)構(gòu)驗(yàn)算。
關(guān)鍵詞:預(yù)應(yīng)力混凝土 T型簡支梁橋 重力式橋墩 重力式橋臺(tái)
ABSTRACT
Th
4、isdesignisofthesamesectionaboutthePingYuanStreet~SuoLongMonastery11freewaycontractstolocalfarmlandRoad1(K0+288.50)PrestressedConcretet-shapedsupportedbeambridgedesign.
Thebridgebelongstotheprestressedconcretedstructuerwhichisasimplesupportedbeambridg
5、e.Thespanarrangementis(4×20)m.ThesuperstructureisvariableTshapedsupportedbeambridge.Theheightofthegirderonthesupportis1.33m,andtheheightofthemiddleis1.33mtoo.Thepierisgravitypier.Theabutmentisgravityabutment.
Thisessayfocusesonthedesignandcalculation
6、processofthebridge.Firstly,compareandchooseabestschemefromseveralbridgetypes;andmakeanoverallstructuredesignofthemainspan.Secondlyperformthecalculationoftheinternalforceandreinforcingbaronthesuperstructure.Thirdly,checktheintensity,stressanddeflection.F
7、inally,checkthesubstructure..
Themainpointsofthedesignareasthefollows.
1.Thecomparisonofseveralbridgetypes;
2.Thearrangementofthebridgetypes;
3.Theunitspartitionofthestructute;
4.Thecalculationoftheinterna
8、lforceofdeadload;
5.Thecalculationoftheinternalforceofmovableload;
6.Thecombinationofeverykindofload;
7.Thearrangementofprestressedreinforcingbar;
8.Thecalculationoftheprestressedloss;
9.Thecheckofthesectionintensi