【正文】 1981 1010 20 27 31 32 1978 3895 1962 1000 21 28 32 33 1979 1900 1977 900 22 29 33 34 1980 1080 1973 782 30 34 35 1981 1010 1951 705 31 35 36 1982 1700 1969 600 23 32 36 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 7 圖1 1 頻率流量曲線0300600900120015001800210024002700300033003600390042004500頻率P(% )重現(xiàn)期哈爾濱理工大學(xué)學(xué)士學(xué)位論文 8 3． 適線并推算規(guī)定頻率流量 以 1870?Q s/m3 ， VC =，假定 SC = 作為理論頻率曲線第一次假定的三參數(shù)。經(jīng)驗(yàn)頻率選用列于表第 14 欄?？甲C期N=199(17841982 年 )，考慮到本期后續(xù)調(diào)查流量的可能遺漏，頻率計(jì)算排到 1880 年為止。 1951 年 964－ =(y－ ) 得 y=705m3/s 1952 年 2299－ =(y－ ) 得 y=1781m3/s 1953 年 1645－ =(y－ ) 得 y=1254m3/s 1954 年 1938－ =(y－ ) 得 y=1490m3/s 1959 年 3997－ =(y－ ) 得 y=3151m3/s 1960 年 4093－ =(y－ ) 得 y=3228m3/s 1973 年 1060－ =(y－ ) 得 y=782m3/s 1974 年 3710－ =(y－ ) 得 y=2919m3/s 1978 年 4920－ =(y－ ) 得 y=3895m3/s 1． 計(jì)算經(jīng)驗(yàn)頻率 (1)按不連續(xù)系列第一種方法 (單獨(dú)連續(xù)系列處理 ) 首先依流量從大到小順序 排列如表 12 第 4 第 5 欄。 ? ??? ???????n niyiyinnknknkkr1i 122xi1ixi)）（（= 9 4 238 8 4 237 4 ???? ? ）（）（ 4Er 06 2 ?????nr ??? Err 則，甲、乙兩站流量為直線相關(guān)。在鄰近流域的河流上，也有一個(gè)水文站 (甲站 )，可以搜集到 1951 年至 1982 年連續(xù) 32 年的年最大流量資料。經(jīng)調(diào)查，橋位河段歷年汛期平均含沙量 ρ 約為 3kg/m3，據(jù)分析橋下河槽能擴(kuò)寬至全橋，但自然演變沖刷為 0m。本設(shè)計(jì)重點(diǎn)突出了預(yù)應(yīng)力在橋梁中的應(yīng)用，這也正體現(xiàn)了我國(guó)橋梁的發(fā)展趨勢(shì)。其主梁通過(guò)橫梁和行車(chē)道板連接成為整體，使車(chē)輛荷載在各主梁之間有良好的橫向分布。橋面部分包括橋面鋪裝、伸縮裝置和欄桿等組成，這些構(gòu)造雖然不是橋梁的主要承重構(gòu)件，但它們的設(shè)計(jì)與施工直接關(guān)系到橋梁整體的功能與安全，這里在本設(shè)計(jì)中也給予了詳細(xì)的說(shuō)明。 關(guān)鍵詞 預(yù)應(yīng)力；簡(jiǎn)支 T 梁；后張法；應(yīng)力驗(yàn)算 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 II 30 m Prestressed Concrete Simply Supported T Beam Bridge Abstract The design is about a reinforce concrete simply supported T beam structure, its superstructure by the king post, septum transversum beam, the lane board, the bridge floor part and the support and so on is posed, the obvious king post is the bridge main carrier. Its king post connects into the whole through the crossbeam and the lane board, enable the vehicles load to have the good traverse between various king posts .Bridge floor part including positions and so on flooring, expansion and contraction installment and parapet, these structures although is not the bridge main carrier, but their design and the construction relates the bridge whole directly the function and the security, here has also given the detailed explanation in this design. This design mainly steps the sagging moment control, when the span increases, cross the bending moment which produces by the dead load and the live load the sharp growth, is the material intensity majority of consumes for the structure gravity, thus limits the spanning ability, this design uses the 30m standard span, has solved this problem reasonably. In the design through the king post endogenic force putation, the stress steel bar arrangement, king post section intensity and stress checking calculation, lane board and support, pillar Taiwan and so on designs, a structure assembly type prestressed concrete simple support T beam bridge, the checking calculation pletely has conformed to the requirement perfectly, uses the method and the new standard corresponds. This design has highlighted the prestressed with emphasis in the bridge application, this has also been manifesting our country bridge trend of 哈爾濱理工大學(xué)學(xué)士學(xué)位論文 III development. Keywords Prestressed； Simple support T beam； Tensioning； Stress checking calculation哈爾濱理工大學(xué)學(xué)士學(xué)位論文 IV 目錄 摘要 ....................................................................................................................... I Abstract ................................................................................................................ II 第 1章 橋涵水力水文 ........................................................................................ 1 設(shè)計(jì)基本資料 ......................................................................................... 1 用相關(guān)分析法插補(bǔ)延長(zhǎng)乙站流量資料 ................................................. 1 運(yùn)用適線法推求該橋設(shè)計(jì)流量 ............................................................. 3 形態(tài)斷面法推求橋位斷面處的設(shè)計(jì)流量 ............................................. 8 計(jì)算橋孔長(zhǎng)度 ....................................................................................... 10 確定橋面標(biāo)高 ........................................................................................11 列表表示各橋臺(tái)樁號(hào)和水深 .....................................................11 壅水高度計(jì)算 .............................................................................11 波浪高度計(jì)算 ............................................................................ 12 橋面最低高程計(jì)算 .................................................................... 13 沖刷計(jì)算 ............................................................................................... 13 642 簡(jiǎn)化公式計(jì)算河槽一般沖刷 ............................................. 13 641 修正式計(jì)算河槽一般沖刷 ................................................. 14 計(jì)算橋臺(tái)沖刷 ph? ....................................................................... 14 河灘一般沖刷 ............................................................................ 15 652 修正式計(jì)算橋墩局部沖刷 ................................................. 16 651 修正式計(jì)算橋墩局部沖刷 ................................................. 16 沖刷值的組合 ............................................................................ 17 求墩臺(tái)的最低沖刷線標(biāo)高 ................................................................... 18 本章小結(jié) ..................................................................................................... 19 第 2章 上部結(jié)構(gòu)計(jì)算 ...................................................................................... 20 設(shè)計(jì)資料及構(gòu)造布置 ........................................................................... 20 設(shè)計(jì)資料 .................................................................................... 20 橫斷面布置 ............................