【正文】 passing roof beam not basic get ) bined newly in, pared with the situation that tightwire walking and makes the snow by oneself to prize , pave the precision to obviously improve , thus improved the roughness of road surface . The using correctly of the instrument performance of the paver and finelying tune device The control of road surface elevation is realized by the instrument. It is fullautomatic to transfer paperback edition put , can according to make level order of appearance reach and design to high Cheng automatically for paver to take, it is good to pave the roughness of road surface built like this. If the instrument reflects slowly, in addition, the finelying tune device will reflect to go up and down to paving the road surface to improperly use, influence the roughness. The paver is pressed the plateform is heated and adjusted In the ShanghaiNanjing expressway , in the highspeed construction of the highway of airport of Nanjing, we have used Germany to produce ABG422 type , ABG311 type , VOGELE2020 type , Model VOGELE1800 paver. To press dull and stereotyped heating device ABG type whether liquefied gas heat four paver these, VOGELE type is heated of electricity. Before paving , press dull and stereotyped heating temperature enough or heat even, can lead to the fact temperature high mixture and temperature pressing plateform is it marry to glue low when paving, is it pave aspect is it draw hair to appear , light hole hole , dark trough ,etc. a irregular one full of bumps and holes to make. So, press dull and stereotyped temperature and must be heated to 85176。相同的厚度，開級配料由于其混合料松鋪系數(shù)較密級配大，所以平整度不如密級配。新鋪接縫處采用斜向碾壓法，適當結(jié)合人工找平，可消除接縫處的不平整，使前后兩路段平順銜接。 攤鋪速度過快，易造成攤鋪層表面的粗顆粒在熨平板下沿攤鋪方向滑動，使表面粗顆粒后方出現(xiàn)小坑小空洞，從而影響面層平整度和預(yù)壓密實度；但亦不能太慢，否則會影響生產(chǎn)效率。否則輪胎軟硬不一，在碾壓過程中形成輪跡，使瀝青面層橫向平整度超標。碾壓時除按規(guī)范標準進行外，應(yīng)注意碾壓路線和方向不得突然改變，以免使混合料產(chǎn)生推移或發(fā)裂。如果攤鋪較薄的上面層，振搗器、夯錘頻率過大會造成熨平板共振，使攤鋪機找平裝置處于不穩(wěn)定狀態(tài)而影響平整度。 攤鋪機熨平板加熱及調(diào)整 在滬寧高速公路、南京機場高速公路施工中，我們使用了德國產(chǎn) ABG422型、 ABG311型、 VOGELE2020 型、 VOGELE1800 型攤鋪機。應(yīng)精心測量、認真調(diào)整，并檢查鋼絲拉力不得小于 784N。 對設(shè)計厚度超過 30cm 者可分二層鋪筑，攤鋪寬度控制在 6～ 8m 時平整度效果較好。我公司在滬寧高速公路和南京機場高速公路瀝青路面施工過程中，嚴密組織，精心施工，使路面平整度均方差分別達到 和 的較高水平，圓滿地完成了爭創(chuàng)國優(yōu)的目標。本文結(jié)合施工實踐就影響瀝青路面平整度的原因進行分析，并提出相應(yīng)對策。 控制混合料的最大粒徑及含水量 為提高基層平整度及方便攤鋪機鋪筑，基層混合料集料最大粒徑宜適當減小。否則，由于測量不準、量線失誤或拉力不夠鋼絲下?lián)系榷紩ㄟ^架設(shè)在鋼絲上的儀表反映到攤鋪路段上，造成路面波浪狀起伏，影響平整度。這四種攤鋪機的熨平板加熱裝置中 ABG型屬于液化氣加熱， VOGELE 型屬于電加熱。同時，應(yīng)經(jīng)常檢查振搗器、夯錘皮帶，皮帶過于松弛會使振搗頻率、夯實次數(shù)快慢不一，形成路面“搓板”。 碾壓溫度的控制 瀝青混合料的溫度控制是瀝青路面施工過程中的關(guān)鍵，現(xiàn)場應(yīng)有專人負責(zé)對來料車、攤鋪后、碾壓前、碾壓中及碾壓終了的溫度進行測試。鋼輪壓路機應(yīng)裝霧狀噴水裝置以防混合料粘輪，輪胎壓路機應(yīng)有專人負責(zé)用1∶3 的油水混合液噴灑輪胎表面，防止碾壓時將 瀝青混合料粘起形成路面不平整。攤鋪速度經(jīng)實踐比較后認為：上面層應(yīng)控制在 2～ ／ min，中、下面層 2～ 4m／ min 為好。 現(xiàn)場人工修補 施工過程中，不論何種原因，只要是混合料中混雜有少量的枯料、花料，攤鋪到路面后就必須徹底挖除，換上合格的混合料。在同一級配條件下，厚度小的結(jié)構(gòu)層比厚度大的平整度好。C90176。t vary the speed or layover to pave at will . We feel in the course of constructing this is a key link of improving the roughness of road surface . Pave speed to be too fast , easy to is it pave layers of superficial thick particle under pressing plateform along pave direction slip to cause, make surface thick particle rear appear light hole little cavity , thus influence surface one layer of roughness and press closely knit degree in advance。t be too slow, otherwise will influence production efficiency . Pave the speed to think after practice is pared: It is above layer should control at ,China, under layers of 24m/min fine. Paving should not generally change the speed at will in the course, because the speed changes and must result in paving the aspect to keep closely knit degree and change in advance , thus have differences , the roughness of road surface of influence to press the solidity finally. Transport the material vehicle and cooperate with the paver one While paving the homework, it is incongruous to often cooperate with paver because of transport the material vehicle and can not operate skilledlying, in front of making the mixture spill and drop on the paver to walk the track, if it can make the paver rock from side to side to remove in time, cause and adjust the angle of elevation of flat system work and change , influence the roughness of road surface automatically. So, special messenger must responsible for manding moving backward , forbid transporting the skip and bumping into the paver. Treatment of the construction joint What the pitch road surface construction joint is dealt with has certain influence on roughness fine or notly, it is better in roughness to often pave the highway section in succession, some data of one and seam are relatively bad. So, the seam level is one of the important factors of restricting the roughness. The key of handling the seam well should be willing to to excise connecting, check the roughness of tip with 3m straightedge, regard paving the aspect straightedge and breaking away from some as demarcation line , cut not sewing by cutting machine it dig except that. Spread seam adopt oblique to roll law is pr