洺河大橋上行橋歷次洪水災(zāi)害原因分析及新橋水文設(shè)計(jì)-畢業(yè)論文

1、工作日志工作日志............................................................................................................1設(shè)計(jì)任務(wù)書設(shè)計(jì)任務(wù)書.............................................................................................

2、.........15開題報(bào)告開題報(bào)告..........................................................................................................18摘要摘要.........................................................................................

3、.........................43Abstract............................................................................................................44第一章第一章緒論緒論.................................................................

4、..................................451.1研究目的及研究意義..................................................................................451.2研究內(nèi)容.................................................................................

5、.....................46第二章：既有大橋過洪能力分析第二章：既有大橋過洪能力分析.....................................................................482.1洺河大橋簡況.........................................................................................

6、.....482.1.1河流及河道狀況..............................................482.1.2洺河大橋歷史沿革及現(xiàn)狀......................................492.21963年特大洪水及災(zāi)后修復(fù)情況調(diào)研......................................................502.2.1洪水概況及橋渡受災(zāi)情況....

7、..................................502.2.2復(fù)舊方案及復(fù)舊情況..........................................512.3大橋設(shè)計(jì)洪水計(jì)算......................................................................................522.3.1橋位處年最大流量資料統(tǒng)計(jì)..........

8、..........................522.3.2經(jīng)驗(yàn)頻率計(jì)算.................................................542.3.3參數(shù)初值的估算..............................................562.3.4經(jīng)驗(yàn)頻率曲線及理論頻率曲線的繪制.............................582.3.5第一次適線結(jié)果分析及統(tǒng)計(jì)參

9、數(shù)對(duì)頻率曲線的影響分析.............592.3.6參數(shù)調(diào)整及設(shè)計(jì)頻率，設(shè)計(jì)流量，重現(xiàn)期的確定...................612.4設(shè)計(jì)水位的推求..........................................................................................632.5設(shè)計(jì)高程計(jì)算....................................

10、..........................................................642.5.1橋前壅水高度的計(jì)算..........................................642.5.2橋下壅水高度的計(jì)算..........................................662.5.3橋底設(shè)計(jì)高程.................................

11、...............662.6大橋過洪能力分析......................................................................................67目錄6.1.1非粘性土一般沖刷計(jì)算公式的選擇.............................1136.1.2粘性土一般沖刷計(jì)算公式的選擇...............................

12、1156.1.3橋址斷面一般沖刷的計(jì)算.....................................116對(duì)于一般沖刷過程中，各項(xiàng)參數(shù)的確定，需要根據(jù)大橋所在河段的實(shí)際情況進(jìn)行選擇：.........................................................1166.2新橋局部沖刷的計(jì)算...................................................

13、.............................1216.2.1局部沖刷計(jì)算公式的選擇......................................1226.2.2新橋局部沖刷計(jì)算...........................................1236.3橋墩基礎(chǔ)埋深的確定............................................................

14、....................130第七章第七章基于基于HECRAS的水力模型模擬計(jì)算的水力模型模擬計(jì)算................................................1327.1HECRASV4.1軟件介紹..............................................................................1327.1.1發(fā)展歷史.....

15、..............................................1327.1.2程式模組...................................................1327.1.3應(yīng)用領(lǐng)域...................................................1337.1.4其他功能....................................

16、...............1337.2計(jì)算模型的建立........................................................................................1347.2.1建立河系圖層...............................................1347.2.2橋梁尺寸及邊界條件及計(jì)算方法確定...................

17、........1377.2.3計(jì)算結(jié)果分析...............................................141參考文獻(xiàn)參考文獻(xiàn)........................................................................................................143致謝致謝.............................