某城際鐵路防洪影響評(píng)價(jià)總報(bào)告

1、311基本情況基本情況1.11.1建設(shè)項(xiàng)目基本情況建設(shè)項(xiàng)目基本情況1.1.11.1.1涉河建筑物位置涉河建筑物位置根據(jù)《新建鐵路某城際鐵路初步設(shè)計(jì)——路口特大橋》，路口特大橋位于某市某區(qū)境內(nèi)。起止里程為DK52397.095～DK58393.505，中心里程為DK55395.3，全長(zhǎng)5996.41m。1.1.21.1.2橋梁設(shè)計(jì)原則橋梁設(shè)計(jì)原則根據(jù)《新建鐵路某城際鐵路初步設(shè)計(jì)——路口特大橋》，橋梁設(shè)計(jì)的主要技術(shù)標(biāo)準(zhǔn)如下。（1）采用的洪水

2、頻率）采用的洪水頻率設(shè)計(jì)洪水頻率：橋梁及涵洞設(shè)計(jì)洪水均為100年一遇。（2）設(shè)計(jì)活載）設(shè)計(jì)活載鐵路等級(jí)：有砟軌道客運(yùn)專線；正線數(shù)目：雙線；線間距：4.6m；設(shè)計(jì)速度：200kmh；設(shè)計(jì)活載：采用中活載，ZK活載檢算。（3）建筑限界）建筑限界客運(yùn)專線建筑接近限界的基本尺寸及輪廓采用《新建時(shí)速200公里客貨共線鐵路設(shè)計(jì)暫行規(guī)定》的限界并考慮通行雙層集裝箱：凈高限界7.96m，股道中心外側(cè)凈寬2.44m。本線跨普通鐵路時(shí)，橋下凈空按“建限1”

3、電化限界辦理，跨武九線考慮通行雙層集裝箱的條件，按7.96m設(shè)計(jì)，跨武黃城際鐵路按7.25m設(shè)計(jì)。立交凈空：按《公路工程技術(shù)標(biāo)準(zhǔn)》（JTGB012003）、《城市道路設(shè)計(jì)規(guī)范》（CJJ3790）及與地方相關(guān)部門協(xié)商意見(jiàn)辦理。1.1.31.1.3建設(shè)規(guī)模及設(shè)計(jì)方案建設(shè)規(guī)模及設(shè)計(jì)方案擬建江北引橋特大橋位于某市某區(qū)境內(nèi)，起止里程為DK52397.095～DK58393.505，中心里程為DK55395.3，全長(zhǎng)5996.41m。見(jiàn)路口特大橋橋

4、址平33續(xù)表1.11孔跨布置表編號(hào)里程編號(hào)里程編號(hào)里程編號(hào)里程25DK53345.74071DK54842.850117DK56374.655163DK57880.65026DK53378.48072DK54875.550118DK56407.370164DK57913.39027DK53411.22073DK54908.250119DK56440.095165DK57945.99028DK53443.96074DK54940.9501

5、20DK56472.830166DK57993.99029DK53476.70075DK54973.650121DK56505.570167DK58026.59030DK53509.44076DK54998.350122DK56538.310168DK58059.32531DK53542.18077DK55023.050123DK56571.050169DK58092.06532DK53574.92078DK55047.750124DK

6、56603.790170DK58124.80533DK53607.66079DK55080.450125DK56636.530171DK58157.54534DK53640.39580DK55113.150126DK56669.270172DK58190.28535DK53665.12581DK55145.850127DK56702.010173DK58223.02536DK53697.86082DK55178.550128DK5673

7、4.750174DK58255.76537DK53730.60083DK55211.250129DK56767.490175DK58288.50538DK53763.34084DK55243.950130DK56800.230176DK58321.24539DK53796.08085DK55276.650131DK56832.970177DK58353.98540DK53828.82086DK55309.350132DK56865.71

8、0終臺(tái)前DK58386.77541DK53861.56087DK55334.050133DK56898.450終臺(tái)尾DK58393.50542DK53894.30088DK55358.750134DK56931.19043DK53927.04089DK55383.450135DK56963.93044DK53959.78090DK55416.150136DK56996.670（2）橋梁橋面布置的原則）橋梁橋面布置的原則與武黃城際鐵路并行

9、地段單線箱梁及雙線箱梁均切翼緣板處理，單線箱梁梁寬7.0m，雙向箱梁梁寬11.8m。（3）墩臺(tái)）墩臺(tái)及基礎(chǔ)類型及基礎(chǔ)類型本橋橋臺(tái)采用雙線空心矩形臺(tái)，雙線矩型橋墩，路口高架站采用門式墩，全橋均采用鋼筋混凝土鉆孔樁。（4）基礎(chǔ)施工圍堰類型）基礎(chǔ)施工圍堰類型位于水塘或溝渠中的橋墩一般視施工水深和地質(zhì)情況選用草袋圍堰筑島或打入鋼板樁圍堰、鋼套箱圍堰，并注意水位較高和地基為強(qiáng)透水層的施工防護(hù)。位于既有鐵路附近橋涵為減少對(duì)行車干擾采用挖孔樁防護(hù)，位