土木工程道桥方向毕业论文设计

星河大桥设计（公路-U级荷载）

（桥面净空为净11m+2 X1.5m的人行道）

TheGalaGPBridgeDesig n

(A,thele ngthof220meters,thefor,chooseprestressedbeamtocolu mnb eambridgefortheproject.Theoveralldesig nschemefortheprestressedb eamtocolu mn simplP-supportedTbeam,thele ngthof220meters,siGpoi n tsacross,a ndn et11m+2G1.5m.Thedesig nspecificati oni sdivided in tot hreechapters,respectivelPisbridgeprelimi narPdesig n,bridgeatthestru cturedesig nan dboredpiles,doublecolu mn tPpepiercalculati on ,beh ind withrefere ncesa nddesig nsta ndard.

KePwords:Tbridge;Theupperstructure;Boredpiles;

第1章桥梁初步设计............................................................. 1 ????

1.1设计方案的初步拟定 .................................................... 1 ????

1.2绘制桥梁方案图 ......................................................... 1 ????

1.3工程量计算 ............................................................. 1 ? ???

1.4方案比选 ............................................................... 5 ? ? ? ?第二章总体布置及主梁的设计............................................ 6 ? ? ? ?

2.1设计资料及构造布置 .................................................... 6 ? ? ? ?

2.2主梁内力计算 .......................................................... 9 - ? ? ?

2.3预应力钢束的估算及其布置 ............................................. 19 ? ? ? ?

2.4计算主梁截面几何特性 ................................................. 25 .......

2.5钢束的预应力损失计算 ................................................. 29 .......

2.6主梁截面承载力与应力验算 ............................................ 32 ????

2.7局部抗压承载力验算 .................................................. 3 6 ????

2.8横隔梁内力计算 ....................................................... 3 7 ????第三章下部结构................................................................ 45 .......

3.1设计资料 ............................................................. 4 5 ????

3.2盖梁计算 ............................................................. 4 5 ????

3.3桥台墩柱设计 .......................................................... 59 - ???

3.4钻孔桩计算 ............................................................ 63 ????致谢.......................................................................... 70 - ???参考文献..................................................................... 7 1 ? ? ? ?

第1章桥梁初步设计