【正文】 But can39。C before paving. In addition, must check and press dull and stereotyped straight degree conscientiously before paving, if was joining or joined the phenomenon instead , must adjust Exactly prop up and draw and press the dull and stereotyped length of pull rod , enable pressing the plateform and making the surface and belonging to one slope together, so as to ensure the horizontal roughness of road surface . Paver vibrator, impact on roughness of road surface of rammer hammer There are very great relations between frequency and paving the speed , mixture one grade of mixing , temperature and thickness of vibrator , rammer hammer ,etc., should select suitable frequency conscientiously according to the regulation of the operation instructions . If pave layer on the a thin one, vibrator , rammer hammer frequency pass conference lead to the fact and press the dull and stereotyped resonance, make the paver look for the paperback edition to put the roughness of influence in unstable state. Meanwhile, should check vibrator , rammer hammer belt often, belt is it will is it shake frequency of smashing , tamp speed of number of times differ to make to relax overly, form the road surface washboard . It causes the road surface not to level to correct travel direction The travel direction of the paver is while happenning askewly, must correct in time . At this moment, the paver track advances on one side, another side advances slowly, quick side press dull and stereotyped ahead have first little step that redound forward, there is a small step pushed and shoved backward to press the dull and stereotyped back end on the slow side, influence the roughness of road surface, should take measures to dispel while rolling . This kind of correct light step that travel direction appear, little highway section easy to produce in curve radius. Road roller The key that the roughness of road surface is fine or not is in the paver, but with rolling inalienable relation of road roller. Rational rolling craft and correct rolling and operating guarantees the roughness important means of road surface . Roll the way and roll the control of the speed Rolling the pitch mixture should be adopted and made the way to roll up , adopt a pair of steel and a road roller at first while pressing for the first time, rolling 2 times, the speed is 。 5 結(jié)束語(yǔ) 瀝青路面平整度涉及的面很廣，影響因素很多，關(guān)系到路基、路面施工全過(guò)程，情況復(fù)雜，有的是機(jī)械性能引起，有的則是人為操作、安排失誤造成，我們只有在充分研究分析產(chǎn)生的原 因后，才能對(duì)癥下藥抓好施工中的每一細(xì)小環(huán)節(jié)。人工填平混合料不可能達(dá)到攤鋪機(jī)鋪筑的水平，必然會(huì)影響路面平整度。 攤鋪過(guò)程中一般不宜隨便改變速度，因?yàn)樗俣茸兓厝粚?dǎo)致攤鋪層面預(yù)壓密實(shí)度起變化，從而最終壓實(shí)度有差異，影響路面平整度。 壓路機(jī)應(yīng)停在冷卻后的瀝青路面上，否則極易形成小坑槽影響平整度。碾壓應(yīng)在混合料較高溫度下進(jìn)行最為有利，一般初 壓不低于 120176。 校正行駛方向引起 路面不平整 攤鋪機(jī)行駛方向發(fā)生偏斜時(shí)，必須及時(shí)校正。攤鋪前，如果熨平板加熱溫度不夠或加熱不均勻，攤鋪時(shí)會(huì)造成溫度較高的混合料與溫度較低的熨平板粘結(jié)，使得攤鋪層面出現(xiàn)拉毛、小坑洞、深槽等不規(guī)則的凹凸不平。 在滬寧高速公路瀝青上面層施工中我們采用了自制移動(dòng)式基準(zhǔn)梁，長(zhǎng)度為 10m，攤鋪精度達(dá)到平整度均方差 。因?yàn)榧狭皆酱?，混合料越易產(chǎn)生離析，且對(duì)攪拌、攤鋪設(shè)備的磨損也大。 基層施工質(zhì)量的影響 以往“基層不平面層調(diào)，下層不平上層找”的老方法，對(duì)平整度要求很高的高速公路來(lái)說(shuō)是根本行不通的。人們乘車在高速公路上行駛，平整度能直接反映高 速公路通車后的整體效果，是體現(xiàn)路面使用品質(zhì)與行車舒適性的最直接的外觀指標(biāo)。實(shí)踐證明進(jìn)口 ABG 型攤鋪機(jī)鋪筑效果最佳，而國(guó)產(chǎn)攤鋪機(jī)幾次試鋪均未成功。 底面層施工前，先要張拉好用于承托儀表傳感器的基準(zhǔn)線 (2～ 3mm 鋼絲繩 )，然后設(shè)好各樁 (樁距 10m)，根據(jù)測(cè)量的掛線高確定各樁位鋼絲的高度。如儀表反映遲緩，加上微調(diào)器使用不當(dāng)升降太快均會(huì)反映到新鋪路面 上，影響平整度。 攤鋪機(jī)振搗器、夯錘對(duì)路面平整度的影響 振搗器、夯錘的頻率與攤鋪速度、混合料級(jí)配、溫度和厚度等有很大的關(guān)系，應(yīng)按使用說(shuō)明書規(guī)定認(rèn)真選定合適的頻率。 碾壓方式及碾壓速度的控制 碾壓瀝青混合料應(yīng)采用組合碾 壓的方式，初壓時(shí)首先采用雙鋼輪壓路機(jī)，碾壓 2遍，速度為 ～ 2km／ h；復(fù)壓緊接在初壓后進(jìn)行，應(yīng)采用重型輪胎壓路機(jī)，碾壓 4～5 遍，速度為 ～ ／ h；終壓采用雙鋼輪壓路機(jī)，碾壓 2 遍，速度為 ～ ／ h。 壓路機(jī)的正確使用 輪胎壓路機(jī)使用時(shí)，應(yīng)注意檢查各個(gè)輪胎的新舊程度和輪胎壓力，必須做到新舊一致、壓力相等。在施工過(guò)程中我們感到這是提高路面平整度的一個(gè)關(guān)鍵環(huán)節(jié)。處理好接縫的關(guān)鍵是要舍得切除接頭，用 3m 直尺檢查端部平整度，以攤鋪層面直尺脫離點(diǎn)為界限，以切割機(jī)切縫挖除。 4 路面結(jié)構(gòu)類型與平整度的關(guān)系 施工中發(fā)現(xiàn)，采用相同的攤鋪機(jī)和相同的碾壓工藝，攤鋪不同類型的路面結(jié)構(gòu)層，其各自的平整度不同。t equip with roof beam not basic 2*16 piece flexible rubber wheel from head to foot,in front and at the back of roof beam not basic, at paver arm office knuckle joint not old, it can dispel by lower floor too some to level ,have road surface slope (before not passing roof beam not basic get) not vertical not original and can39。C, press and is not lower than 70176。s quality , prehensive reflection of petence of operating, only strengthen the management of construction site, organize meticulously and construct , could guarantee the roughness of road surface , improve the project quality of road surface . 。t suddenly change , in case that mixture was it pass or take place and split to produce. Roll the control of temperature The temperature control of the pitch mixture is a key in the pitch road surface construction course, scene should have special messenger responsible for to e skip, after paving, before rolling, in rolling and roll temperature of the end test. Is it should go on most favorable under the high temperature in mixture to roll , generally force down in 120176。s levelling, the factory mixes the mixture paver to pave and build The construction of the semirigid basic unit of two gray broken stones , was used to adopting the land leveller homework in the past, its shorting is