公路施工新技術(shù)課件

1、公路施工新技術(shù)1公路施工新技術(shù)2004年12月公路施工新技術(shù)2公路施工新技術(shù)3公路施工新技術(shù)4公路施工新技術(shù)5施工過(guò)程公路施工新技術(shù)6施工過(guò)程新技術(shù) 自檢碾壓機(jī) 移動(dòng)式拌和樓 紅外線攝影機(jī) 混合料傳送機(jī)公路施工新技術(shù)7公路施工新技術(shù)8公路施工新技術(shù)9公路施工新技術(shù)10公路施工新技術(shù)11公路施工新技術(shù)12公路施工新技術(shù)13不均勻密度的影響 同壓密不夠類似增加剝落與水損減少疲勞壽命 增加空隙率1%將至少減少10%的壽命公路施工新技術(shù)14公路施工新技術(shù)15公路施工新技術(shù)16公路施工新技術(shù)17公路施工新技術(shù)18不均勻密度的位置公路施工新技術(shù)19溫差超過(guò)14c空隙率增加2%公路施工新技術(shù)20材料傳遞機(jī)公

2、路施工新技術(shù)21公路施工新技術(shù)22材料傳遞機(jī)拌和葉片攤鋪之前的再拌和公路施工新技術(shù)23施工工藝自動(dòng)化 計(jì)算機(jī)技術(shù)應(yīng)用 衛(wèi)星和激光定位技術(shù) 遙控技術(shù) 圖控技術(shù) 機(jī)器眼技術(shù) 動(dòng)態(tài)反饋和傳感技術(shù) 人機(jī)對(duì)話技術(shù)公路施工新技術(shù)24衛(wèi)星定位技術(shù)公路施工新技術(shù)25激光定位技術(shù)公路施工新技術(shù)26遙控技術(shù)公路施工新技術(shù)27遙控挖掘裝載機(jī)公路施工新技術(shù)28碾壓自動(dòng)化公路施工新技術(shù)29多臺(tái)碾壓機(jī)碾壓自動(dòng)化公路施工新技術(shù)30公路施工新技術(shù)31機(jī)器眼探測(cè)裂縫公路施工新技術(shù)32機(jī)器眼安裝路面標(biāo)記公路施工新技術(shù)33自動(dòng)封縫機(jī)公路施工新技術(shù)34圖控技術(shù)公路施工新技術(shù)35人機(jī)對(duì)話公路施工新技術(shù)36遙控管涵安裝機(jī)公路施工新技術(shù)3

3、7遙控挖掘裝載機(jī)公路施工新技術(shù)38橋梁除漆機(jī)器人公路施工新技術(shù)39自動(dòng)掃雪灑鹽機(jī)公路施工新技術(shù)40路面新技術(shù) 超級(jí)性能路面 瑪蹄脂瀝青碎石混凝土路面 永久路面公路施工新技術(shù)41混合料主要特點(diǎn)混合料主要特點(diǎn)嚴(yán)格的材料選擇嚴(yán)格的材料選擇旋轉(zhuǎn)壓密機(jī)和體積比設(shè)計(jì)旋轉(zhuǎn)壓密機(jī)和體積比設(shè)計(jì) pgagg% passingsieve size 0.45sgc公路施工新技術(shù)42瀝青性能分級(jí)以天氣為基礎(chǔ)pg 64-22performancegradeaverage 7-daymax pavementdesign tempmin pavementdesign temp公路施工新技術(shù)43the higher thegr

4、ade, the stiffer the binder. the more rut resistance. pg 82pg 76pg 70pg 64pg 58公路施工新技術(shù)44the lower thenumber, the moreresistant tothermal cracking.pg - 22- 28-34公路施工新技術(shù)45集料特性集料特性 基本特性基本特性 要求要求 coarse aggregate angularity (caa) fine aggregate angularity (faa) flat, elongated particles (f & e) clay

5、 content (se) 來(lái)源特性來(lái)源特性 選擇選擇 toughness soundness deleterious materials polish values公路施工新技術(shù)461000 .075.3 2.36 4.759.512.5 19.0percent passingsieve size (mm) raised to 0.45 power級(jí)配級(jí)配公路施工新技術(shù)47控制點(diǎn)控制點(diǎn)1000 .075.3 2.36 4.759.512.5 19.0percent passingcontrol pointrestricted zonemax density linemaxsizenommax

6、sizesieve size (mm) raised to 0.45 power公路施工新技術(shù)48marshall methodsfscbfbcsr公路施工新技術(shù)4919.0 mm25.0 mm37.5 mm9.5 mm4.75 mm12.5 mm公路施工新技術(shù)50aggregate gradationnominal size: 19.0 mm sma& 19.0 mm superpavepercent passing19 mm nominal sieve size0.020.040.060.080.0100.0120.0sieve size r aised to 0.45 power

7、percent passingblend 1blend 2 smasuperpave公路施工新技術(shù)5119.0 mm superpave公路施工新技術(shù)52insert i-70i-70 ndesign - 96 19.0 mm smavtm - 4.3公路施工新技術(shù)53aggregate gradationnominal size: 12.5 mm sma& 12.5 mm superpave12.5 mm nominal sieve size0.020.040.060.080.0100.0120.0sieve size r aised to 0.45 powerpercent pas

8、singblend 1blend 2percent passingsmasuperpave公路施工新技術(shù)54i-8312.5 mmpg 70-22 binder公路施工新技術(shù)55first 12.5 mm smai-68ndesign - 100 3.9vtm公路施工新技術(shù)56熱壓密和緊跟攤鋪機(jī)熱壓密和緊跟攤鋪機(jī)!公路施工新技術(shù)57特性比較特性比較rut resistantdurableskid resistantreduced sprayreduced hydroplaningreduced soundsuperpavesma公路施工新技術(shù)58decision points for usin

9、g sma as the surface layer 2000 esals per day 55 mph公路施工新技術(shù)59永久路面路面設(shè)計(jì)概念公路施工新技術(shù)60永久路面路面設(shè)計(jì)概念抗疲勞瀝青基層：通過(guò)厚度使拉應(yīng)變最小公路施工新技術(shù)61永久路面路面設(shè)計(jì)概念抗車轍上面層集料顆粒摩擦互鎖：軋制和粗顆粒瀝青膠結(jié)料：高溫性能和改性空隙率：現(xiàn)場(chǎng)4%-6%公路施工新技術(shù)62永久路面路面設(shè)計(jì)概念抗車轍上面層車轍試驗(yàn)驗(yàn)證 現(xiàn)場(chǎng) 加速試驗(yàn)公路施工新技術(shù)63上開(kāi)裂公路施工新技術(shù)64華盛頓州永久路面州際高速公路90號(hào) 47% 沒(méi)有破壞27-33年；路面24公分；第一次罩面12年；第二次罩面13年。公路施工新技術(shù)65厚

10、度比較公路施工新技術(shù)66公路施工新技術(shù)67公路施工新技術(shù)68性能試驗(yàn)公路施工新技術(shù)69車轍儀公路施工新技術(shù)70車轍儀試驗(yàn)結(jié)果公路施工新技術(shù)71公路施工新技術(shù)72公路施工新技術(shù)73公路施工新技術(shù)74公路施工新技術(shù)75公路施工新技術(shù)76公路施工新技術(shù)77 車輛噪音: engine, exhaust system, aerodynamic noise tire noise. for 90 kmph, pavement/tire noise dominates.power train noisecoast- by noise路面噪音公路施工新技術(shù)78 fhwa - noise abatement cr

11、iteria 67 db(a)“this is not an absolute value or design standard, only a level where noise mitigation must be considered”公路施工新技術(shù)790.0000010.000010.00010.0010.010.11101001000sound pressure, n/sq. m.020406080100120140decibel levelthe decibel scalehearing thresholdconversationpain thresholddiscomfort公路

12、施工新技術(shù)80the decibel scaleincreasing the decibel level by10 doubles the noise intensity!0246810121416noise intensity60708090100decibelsconversationtrainchain saw公路施工新技術(shù)81 隔音墻和種樹(shù)隔音墻和種樹(shù) erect noise walls or plant trees/shrubs 路面微觀構(gòu)造防止噪音措施公路施工新技術(shù)82隔音墻隔音墻effective only for those in line-of-sight.do not re

13、duce noise atsource.公路施工新技術(shù)83 effectiveness must justify expense. cases: i-40, knoxville: $25,000/home i-285, atlanta: requirements of 69 db(a) and 67db(a), 5db(a) nationwide (fhwa, 1998): $1m/mile隔音墻隔音墻公路施工新技術(shù)84conclusions, “in general, when dense-graded asphalt and pcc pavements are compared, the

14、dense-graded is quieter by 2 to 3 db(a)”路面微觀構(gòu)造公路施工新技術(shù)8567 db(a)15 mthe decibel scale公路施工新技術(shù)86a reduction of 3 db(a) is like doubling the distance from the noise.67 db(a)30 m- 3 db(a) = 64 db(a)公路施工新技術(shù)87conclusions: “in general, when dense-graded asphalt and pcc pavements are compared,the dense-grade

15、d is quieter by 2 to 3 db(a)”a 3db(a) reduction corresponds to:- doubling the distance- reducing traffic volume by 50%- reducing traffic speed by 25%公路施工新技術(shù)88conclusions: “open-graded asphalt shows the greatest potential for noise reduction for passby noise. reduction when compared to dense-graded a

16、sphalt ranged from 1 to 9 db(a).” a 9db(a) reduction corresponds to:- a reduction in traffic noise by almost 50%!公路施工新技術(shù)89ogfcsreduce noise and improve visibility公路施工新技術(shù)90noise reductionopen vs dense graded mixes74767880820246age, in yearssound pressure, db(a)12mm dense12mm dense12mm porous8mm porou

17、s18-22% voids8mm porous22% voidssource: nchrp 284公路施工新技術(shù)91 dots indicate a strong need for pavement noise control strategies. proper selection of pavement surface is the best method to reduce noise from pavement/tire interactions.what can be done?公路施工新技術(shù)92 ogfc is the quietest surface type. (wayson,

18、 nchrp synthesis 268) sma has also proven to be a quiet surface. (wisconsin dot, 1993) dense graded hma surfaces are quieter than pcc pavements.(hibbs and larson, report fhwa-sa-96-068, may 1996)effect of pavement surface公路施工新技術(shù)93families near i-275 is lobbying the michigan dot forsound abatement. in 1999, mdot rebuilt i-275 withconcrete. residents contend the project has increasenoise levels. levels have been registered upwards of90 decibels.steve phillips of berkshire, england-based trllimited spoke about e