預(yù)應(yīng)力混凝土簡支梁橋橋梁工程課程設(shè)計(jì)

1、西南交通大學(xué)土木工程西南交通大學(xué)土木工程橋梁工程課程設(shè)計(jì)――預(yù)應(yīng)力混凝土簡支梁橋――預(yù)應(yīng)力混凝土簡支梁橋設(shè)計(jì)計(jì)算書姓名：學(xué)號：班級：指導(dǎo)教師：3.正常使用極限狀態(tài)下荷載長期效應(yīng)組合.....................................144.持久狀況應(yīng)力計(jì)算時(shí)的荷載效應(yīng)組合.........................................155.短暫狀況應(yīng)力計(jì)算時(shí)的荷載效應(yīng)組合............

2、.............................15第四章預(yù)應(yīng)力鋼束設(shè)計(jì)....................................................................................16一、1號梁鋼束估算...................................................................................1

3、61.按正截面抗彎承載力估算.............................................................162.按正常使用狀態(tài)估算.....................................................................163.預(yù)應(yīng)力鋼筋估算值...................................................

4、......................17二、1號梁鋼束的布置...............................................................................17三、預(yù)應(yīng)力損失計(jì)算..................................................................................181.預(yù)應(yīng)力鋼束與管道壁之

5、間的摩擦損失.........................................192.由錨具變形、鋼筋回縮和接縫壓密引起的預(yù)應(yīng)力損失.............193.混凝土彈性壓縮引起的預(yù)應(yīng)力損失.............................................204.預(yù)應(yīng)力鋼筋的應(yīng)力松弛引起的預(yù)應(yīng)力損失.................................205.混凝土收縮和徐變引起

6、的預(yù)應(yīng)力損失.........................................21四、各階段的有效預(yù)應(yīng)力及鋼束效應(yīng)......................................................22第五章主梁驗(yàn)算............................................................................................

7、....23一、承載能力驗(yàn)算......................................................................................231.正截面抗彎承載力驗(yàn)算...................................................................232.斜截面抗剪承載力驗(yàn)算.........................

8、..........................................24二、抗裂性驗(yàn)算..........................................................................................241.正截面抗裂性驗(yàn)算...................................................................

9、........242.斜截面抗裂性驗(yàn)算...........................................................................25三、持久狀況預(yù)應(yīng)力混凝土構(gòu)件應(yīng)力驗(yàn)算..............................................261.混凝土正截面壓應(yīng)力和預(yù)應(yīng)力鋼筋拉應(yīng)力驗(yàn)算。.......................262.混凝土主壓應(yīng)力

10、和主拉應(yīng)力驗(yàn)算...................................................27四、短暫情況預(yù)應(yīng)力混凝土構(gòu)件應(yīng)力驗(yàn)算..............................................28五、剛度驗(yàn)算........................................................................................

11、......29第六章結(jié)論........................................................................................................30第七章參考文獻(xiàn)..............................................................................................