



(8)eachbatchofhighstrengthboltsshouldhavethefactorycertificate,theboltconnectionvicetorqueshouldbeaccompaniedbythetorquecoefficientoftheaveragevalue,standarddeviationofthetestdataandtorquecoefficienttestenvironmenttemperatureandothertechnicalinformation.(9)波形梁護欄、勾當(dāng)式鋼護欄及螺栓、螺母、墊圈、墊片等所有部件均應(yīng)按《高速公路交通工程鋼構(gòu)件防腐手藝前提》(GB/T)的劃定采用熱浸鍍鋅(鋁)進行金屬概況處置;
熱浸鍍鋅應(yīng)采用《鋅錠》(GB/T470—1997)中所劃定的特一號鋅錠或一號鋅錠,鍍鋅構(gòu)件鋅層質(zhì)量應(yīng)合適表602-1的劃定。熱浸鍍鋁應(yīng)采用《重熔用鋁錠》(GB/T1196-1993)中所劃定的特一級、特二級、一級鋁錠,鍍鋁構(gòu)件鋁層質(zhì)量應(yīng)合適表602-2的劃定。(9)W-beamguardrail,activitytypesteelguardrailandbolts,nuts,washers,gaskets,etc.allthepartsshallbeinaccordancewiththeprovisionsofthehighwaytrafficengineeringsteelstructureanticorrosiontechnicalconditions"GB/Tbyhotdipgalvanized(AL)metalsurfacetreatment;hotdipgalvanizingshouldadoptthe"zinc"(GB/T470-1997stipulatedthespecialNo.azincingotsor1zincingots,componentgalvanizedzinclayerqualityshallconformtospecifiedintable602-1.Hotdipaluminumshouldadopttheremeltingwithaluminumingot"(GB/T1196-1993)requiredaspecial,specialsecondaryandprimaryaluminumingot,aluminumaluminumcomponentlayerqualityshallconformtotherequirementsintable602-2.高強度螺栓進行熱浸鍍鋅處置后。
對高強度螺栓毗連件概況要涂黃油,并進行磷化潤滑處置,在出廠時應(yīng)密封包裝,以防運輸、保留時代生銹或弄臟。Hotdipgalvanizedhighstrengthbolts,ofhighstrengthboltconnectionsurfaceshouldbecoatedwithbutter,andphosphatizinglubrication,inthefactoryshouldbesealedpackaging,topreventtransportation,preservationperiodofrustordirty.(10)鍍鋅構(gòu)件的鋅層應(yīng)平均,試樣經(jīng)溶液浸蝕5次不變紅,并合適《高速公路波形梁鋼護欄》(JT/T281-1995)附錄B的劃定;
鍍鋅構(gòu)件的鋅層應(yīng)與基底金屬連系安穩(wěn),經(jīng)捶擊試驗鍍鋅層不剝離、不凸起,并合適《高速公路波形梁鋼護欄》(JT/T281-1995)附錄C的劃定。(10)componentgalvanizedzinclayershouldbeuniformsamplebyetchingofthecoppersulphatesolution,5timesthesamered,andinaccordancewiththeprovisionsofthehighwayguardrail,JT/T281-1995AppendixB;componentgalvanizedzinclayershouldbeandbasemetalisfirmlycombinedbyhammeringtestgalvanizedlayernotpeeling,notraised,andinaccordancewiththeprovisionsofthehighwayguardrail,JT/T281-1995AppendixC.The(11)鍍鋁構(gòu)件的鋁層應(yīng)平均。
波形梁護欄是一種公路中央分隔帶開口處用組合型波形板活動式鋼護欄,該護欄由兩片波形鋼護欄板及兩者之間固定夾放的兩根立柱構(gòu)成,兩根立柱固定夾裝在兩片波形鋼護欄板之間。在公路正常營運時,該護欄利用插拔立柱可方便地插入開口處預(yù)先設(shè)置的插拔孔內(nèi),起到隔離和防護作用,同時與公路外邊上的護欄帶相呼應(yīng),整齊劃一,美觀配套。車輛對其碰撞時,由于波形鋼護欄板有良好的耐撞性