国产又粗又猛又爽又黄的黄牛视频-欧美日韩精品网址-国产成人麻豆h视频在线观看-蜜臀av区一二三爽免费播放-久久久伦理精品-99精品资源在线视频-伊人久久大香樵-久久人妻人人爽-性欧美少妇煌妇喷水,麻豆免费在线观看视频网站,天天射天天干天天要,91精品国自产拍老熟女露脸

（1）波形梁護(hù)欄板、立柱、防阻塊、橫隔梁、端頭、螺栓、螺母等構(gòu)件應(yīng)合適《高速公路波形梁鋼護(hù)欄》（JT/T281—1995）及《公路三波形梁鋼護(hù)欄》（JT/T457—2001）產(chǎn)物尺度的劃定。出產(chǎn)廠方在供給產(chǎn)物時(shí)，應(yīng)同時(shí)提交產(chǎn)物質(zhì)量及格證書。(1)waveformbeamplate,averticalcolumn,anantiblock,crossbeamandanend,bolts,nutsandothercomponentsseparatedshouldconformtotherequirementsofthehighwayguardrail"(JT/T281-1995)andtheroadthreewavebeamsteelguardrail"(JT/T457--2001)standardproductsof.Themanufacturersinprovidingproducts,productqualitycertificateshouldbesubmittedatthesametime.（2）波形梁板、立柱、防阻塊、端頭、托架等部件應(yīng)合適《碳素布局鋼》（GB/T700—1988）的Q235商標(biāo)鋼的要求。

(2)wavebeamplate,column,block,end,bracketandotherpartsshouldbeinaccordancewiththe"carbonstructuralsteel"(GB/T700-1988)oftheQ235gradesofsteelrequirements.（3）毗連螺栓、螺母、墊圈、橫梁墊片等部件應(yīng)合適《碳素布局鋼》（GB/T700—1988）的要求，其抗拉強(qiáng)度不得小于375MPa和400MPa（別離合用于JT/T281—1995和JT/T457—2001）。(3)connectingbolts,nuts,washers,beamgasketcomponentsshouldcomplywiththe"carbonstructuralsteel"(GB/T700-1988)requirements,thetensilestrengthshallnotbelessthan375MPaand400MPa(wereappliedtoJT/T281-1995andJT/T457,2001).（4）高強(qiáng)度拼接螺栓毗連副應(yīng)合適《低合金高強(qiáng)度布局鋼》（GB/T1591-1994）、《優(yōu)質(zhì)碳素布局鋼》（GB/T699-1999）或《合金布局鋼》（GB/T3077-1999）的要求。

公稱直徑16mm、8.8S級(jí)抗拉荷載不得小于133kN。(4)highstrengthboltedspliceconnectiondeputyshallcomplywiththerequirementsofthelowalloyhighstrengthstructuralsteel"GB/T1591-1994,thehighqualitycarbonstructuralsteel"GB/T699-1999orthealloystructuresteel,GB/T3077-1999,nominaldiameterof16mm,8.8stensileloadshallnotbelessthan133kN.（5）為包管產(chǎn)物質(zhì)量。

對(duì)波形梁護(hù)欄各部件的外不雅、尺寸、防腐處置進(jìn)行抽樣查抄。不不異的部件各以200件一批為取樣單元，別離掏出一片護(hù)欄板、一個(gè)端頭、一根立柱、一塊托架進(jìn)行查抄，若是受檢的構(gòu)件不合適要求，另取兩件查驗(yàn)；若是這兩件中仍有一件不合適要求，則以此為樣品的整批產(chǎn)物應(yīng)被拒收，一切費(fèi)用由承包人自付。(5)toensurethequalityofproducts,theappearance,sizeandcorrosionresistanceofvariouspartsoftheguardrailsweresampledandchecked.Differentcomponentsto200piecesofanumberofsamplingunit,respectively,removedapieceofguardrailplate,ahead,anuprightt,abracketareexamined,ifbyinspectionofthecomponentdoesnotmeettherequirements,takeanothertest;ifthisisstilladoesnotmeettherequirements,thetosampletheentirebatchofproductsshouldberejected,allexpensesbythecontractorpays.（6）護(hù)欄板、端頭梁、立柱的長(zhǎng)度和寬度標(biāo)的目的不許可焊接。

構(gòu)件不該呈現(xiàn)裂痕。(6)thelengthandwidthoftherail,theendofthebeamandthecolumnarenotallowedtobewelded,andthemembersshouldnotcrack.（7）高強(qiáng)度螺栓應(yīng)抽樣進(jìn)行楔負(fù)載拉力試驗(yàn)，斷裂應(yīng)發(fā)生在螺紋部門或螺紋與桿部交代處；如不克不及做楔負(fù)載拉力試驗(yàn)，則應(yīng)做芯部硬度試驗(yàn)，芯部硬度值為洛氏HRC34～40。螺母應(yīng)抽樣進(jìn)行包管荷載和硬度試驗(yàn)。(7)ofhighstrengthboltsshouldbesampledtowedgeloadtensiletest,fractureoccurredatthethreadedportionorthreadandrodjunction;ifnotwedgetensileloadtest,youshoulddocorehardnesstest,hardnessofthecorevaluesofRockwellHRC34~40.Thenutshallbesampledtoensuretheloadandhardnesstest.（8）每批高強(qiáng)螺栓都應(yīng)有出廠及格證。

螺栓毗連副扭矩應(yīng)附有扭矩系數(shù)的平均值、尺度誤差的試驗(yàn)數(shù)據(jù)和扭矩系數(shù)測(cè)試時(shí)的情況溫度等手藝資料。(8)eachbatchofhighstrengthboltsshouldhavethefactorycertificate,theboltconnectionvicetorqueshouldbeaccompaniedbythetorquecoefficientoftheaveragevalue,standarddeviationofthetestdataandtorquecoefficienttestenvironmenttemperatureandothertechnicalinformation.（9）波形梁護(hù)欄、勾當(dāng)式鋼護(hù)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(jìn)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(hào)鋅錠或一號(hào)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(jí)、特二級(jí)、一級(jí)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(qiáng)度螺栓進(jìn)行熱浸鍍鋅處置后。

對(duì)高強(qiáng)度螺栓毗連件概況要涂黃油，并進(jìn)行磷化潤(rùn)滑處置，在出廠時(shí)應(yīng)密封包裝，以防運(yùn)輸、保留時(shí)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(hù)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(yàn)鍍鋅層不剝離、不凸起，并合適《高速公路波形梁鋼護(hù)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。