預(yù)應(yīng)力橋圖紙.dwg

2008-10/預(yù)應(yīng)力橋圖紙.rar一、設(shè)計(jì)依據(jù)
1．公路橋涵設(shè)計(jì)通用規(guī)范（JTJ021-89）。
2．公路鋼筋混凝土及預(yù)應(yīng)力混凝土橋涵設(shè)計(jì)規(guī)范（JTJ023-85）。
3．公路橋涵地基與基礎(chǔ)設(shè)計(jì)規(guī)范（JTJ024-85）。
二、基本情況
***橋是在**公路***1號(hào)橋的內(nèi)側(cè)加寬8.1m形成：2×0.55（安全帶）+2×7.0m （行車道）+1.5m（中央分隔帶）的新橋。我院于99年6月底對(duì)該橋位進(jìn)行了橋位測(cè)量，測(cè)得老橋起訖點(diǎn)樁號(hào)為：K0+041.12~K0+134.67（假定樁號(hào)）；新加寬部分的起訖點(diǎn)樁號(hào)為：K0+060.39~K0+131.716，其技術(shù)標(biāo)準(zhǔn)：
橋面凈空：凈-7+2×0.55m
設(shè)計(jì)荷載：汽車-20級(jí)，掛車-100
橋面縱坡：0%；橫坡：1.5%（單向）
橋位場(chǎng)區(qū)地震裂度小于規(guī)范要求，未考慮地震設(shè)防。
三、地質(zhì)情況
甲方未提供橋位處的地質(zhì)資料，但兩岸均有明顯的片麻巖露頭。設(shè)計(jì)要求橋臺(tái)基礎(chǔ)底面應(yīng)置于承載能力不小于1Mpa的新鮮巖石面上，若施工開(kāi)挖到設(shè)計(jì)標(biāo)高后無(wú)法滿足設(shè)計(jì)要求的承載能力，請(qǐng)施工單位和甲方務(wù)必通知設(shè)計(jì)單位，以便采取措施解決。
四、橋型結(jié)構(gòu)
First, design basis
1. General Highway Bridge Design Specification (JTJ021-89).
2. Reinforced concrete and prestressed concrete highway bridges and culverts (JTJ023-85).
3. Highway Bridge Design Code base and foundation (JTJ024-85).
Second, the basic situation
*** *** Road Bridge is No. 1 in ** the inside of the bridge widening 8.1m form: 2 × 0.55 (seat belt) +2 × 7.0m (lane) +1.5 m (median) of new Bridge. Our hospital in 99 years by the end of June to the bridge site for the bridge position measurement, the measured Stake for the Old Bridge Ends: K0 +041.12 ~ K0 +134.67 (assuming Stake); new widened as part of the Ends Stake : K0 +060.39 ~ K0 +131.716, its technical standards:
Bridge clearance: Net -7 +2 × 0.55m
Design load: Automotive -20 level, trailers -100
Deck Longitudinal: 0%; cross slope: 1.5% (one-way)
Bridge location field earthquake intensity zone is less than specifications, are not considered earthquake fortification.
Third, geological conditions
Party did not provide the bridge is located at the geological data, but both sides have had significant gneiss outcrops. Design requirements should be placed in the underside of abutment foundation bearing capacity of not less than 1Mpa fresh rock surface, if after the excavation to the design level can not meet the design requirements of carrying capacity, please be sure to notify the construction unit and design unit Party to take measures to address.
4, the bridge structure
 

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