公路施工新技术

公路施工新技术第1页，共96页。第2页，共96页。第3页，共96页。第4页，共96页。施工过程第5页，共96页。施工过程新技术第6页，共96页。自检碾压机移动式拌和楼红外线摄影机混合料传送机第7页，共96页。第8页，共96页。第9页，共96页。第10页，共96页。第11页，共96页。第12页，共96页。不均匀密度的影响同压密不够类似增加剥落与水损减少疲劳寿命

增加空隙率1%将至少减少10%的寿命第13页，共96页。第14页，共96页。第15页，共96页。第16页，共96页。第17页，共96页。不均匀密度的位置第18页，共96页。温差超过14°C空隙率增加2%第19页，共96页。材料传递机第20页，共96页。第21页，共96页。材料传递机拌和叶片第22页，共96页。摊铺之前的再拌和施工工艺自动化第23页，共96页。计算机技术应用卫星和激光定位技术遥控技术图控技术机器眼技术动态反馈和传感技术人机对话技术卫星定位技术第24页，共96页。激光定位技术第25页，共96页。遥控技术第26页，共96页。遥控挖掘装载机第27页，共96页。碾压自动化第28页，共96页。多台碾压机碾压自动化第29页，共96页。第30页，共96页。机器眼探测裂缝第31页，共96页。机器眼安装路面标记第32页，共96页。自动封缝机第33页，共96页。图控技术第34页，共96页。人机对话第35页，共96页。遥控管涵安装机第36页，共96页。遥控挖掘装载机第37页，共96页。桥梁除漆机器人第38页，共96页。自动扫雪洒盐机第39页，共96页。路面新技术第40页，共96页。超级性能路面玛蹄脂沥青碎石混凝土路面永久路面混合料主要特点严格的材料选择旋转压密机和体积比设计PGAGG%

passingsieve

size

0.45SGC第41页，共96页。沥青性能分级以天气为基础PG

64-22PerformanceGradeAverage

7-daymax

pavementdesign

tempMin

pavementdesign

temp第42页，共96页。The

higher

theGrade,

the

stifthe

binder.The

more

rutresistance.PG

82PG

76PG

70PG

64PG

58第43页，共96页。The

lower

thenumber,

the

moreresistant

tothermal

cracking.PG

-

22-

28-34第44页，共96页。集料特性基本特性–要求coarse

aggregate

angularity

(CAA)fine

aggregate

angularity

(FAA)flat,

elongated

particles

(F

&

E)clay

content

(SE)来源特性–选择toughnesssoundnessdeleterious

materialspolish

values第45页，共96页。019.0Percent

Passing100.075

.3

2.36

4.75

9.5

12.5Sieve

Size

(mm)

Raised

to

0.45

Power第46页，共96页。级配控制点019.0control

pointPercent

Passing100max

density

linerestricted

zonemaxsize第47页，共96页。nom

max

size.075

.3

2.36

4.75

9.5

12.5Sieve

Size

(mm)

Raised

to

0.45

PowerMarshall

MethodSRSFSCBFBC第48页，共96页。19.0

mm25.0

mm37.5

mm9.5

mm第49页，共96页。4.75

mm12.5

mmAGGREGATE

GRADATIONNominal

Size:

19.0

mm

SMA&

19.0

mm

SuperpavePercent

PassingSMA第50页，共96页。Superpave19.0

mm

Superpave第51页，共96页。IInnsseerrtt

II--7700I-70第52页，共96页。Ndesign

-

9619.0

mm

SMA

VTM

-

4.3AGGREGATE

GRADATIONNominal

Size:

12.5

mm

SMA&

12.5

mm

SuperpavePercentPassingSMA第53页，共96页。SuperpaveI-83第54页，共96页。12.5

mmPG

70-22

BinderFirst

12.5

mm

SMA第55页，共96页。I-68Ndesign

-

100VTM3.9热压密和紧跟摊铺机!第56页，共96页。特性比较Rut

ResistantDurableSkid

ResistantReduced

SprayReduced

HydroplaningReduced

SoundSuperpaveSMA第57页，共96页。Decision

Pointsfor

using

SMA

astheSurface

Layer第58页，共96页。2000

ESAL’s

per

day55

mph永久路面路面设计概念第59页，共96页。永久路面路面设计概念抗疲劳沥青基层：通过厚度使拉应变最小第60页，共96页。永久路面路面设计概念抗车辙上面层集料颗粒摩擦互锁：轧制和粗颗粒沥青胶结料：高温性能和改性空隙率：现场4%-6%第61页，共96页。永久路面路面设计概念第62页，共96页。抗车辙上面层车辙试验验证现场加速试验上开裂第63页，共96页。华盛顿州永久路面第64页，共96页。州际高速公路90号47%没有破坏27-33年；路面24公分；第一次罩面12年；第二次罩面13年。厚度比较第65页，共96页。第66页，共96页。第67页，共96页。性能试验第68页，共96页。车辙仪第69页，共96页。车辙仪试验结果第70页，共96页。第71页，共96页。第72页，共96页。第73页，共96页。第74页，共96页。第75页，共96页。第76页，共96页。车辆噪音:engine,exhaust

system,aerodynamic

noisetire

noise.

For

>

90

kmph,

pavement/tire

noisedominates.Power

train

noise第77页，共96页。Coast-

by

noise路面噪音FHWA

-

Noise

Abatement

Criteria第78页，共96页。67

dB(A)“this

is

not

an

absolute

value

or

design

standard,only

a

level

where

noise

mitigation

must

beconsidered”The

Decibel

ScaleHearing

ThresholdConversationPain

ThresholdDiscomfort第79页，共96页。The

Decibel

ScaleIncreasing

the

decibel

level

by10

doubles

the

noise

intensity!ConversationTrainChain

Saw第80页，共96页。隔音墙和种树Erect

Noise

Walls

or

PlantTrees/Shrubs路面微观构造Control

Surface

Texture第81页，共96页。防止噪音措施隔音墙Effective

only

for

those

in

line-of-sight.Do

not

reduce

noise

atsource.第82页，共96页。Effectiveness

must

justify

expense.Cases:I-40,

Knoxville:

>$25,000/homeI-285,

Atlanta:

Requirements

of

>

69

dB(A)and

<

$50,000/homeU.S.

441,

West

Boca,

FL:

>

67dB(A),<$30,000/home,

reduction

of

>

5dB(A)Nationwide

(FHWA,

1998):

>$1M/mile第83页，共96页。隔音墙Conclusions,

“In

general,

whendense-graded

asphalt

and

PCCpavements

are

compared,

the

dense-graded

is

quieter

by

2

to

3

dB(A)”路面微观构造第84页，共96页。67

dB(A)15

mThe

Decibel

Scale第85页，共96页。A

reduction

of

3

dB(A)

is

like

doublingthe

distance

from

the

noise.67

dB(A)第86页，共96页。30

m-

3

dB(A)

=

64

dB(A)Conclusions: “In

general,

when

dense-graded

asphalt

and

PCC

pavements

arecompared,the

dense-graded

is

quieter

by

2to

3

dB(A)”A

3dB(A)

reduction

corresponds

to:doubling

the

distancereducingtraffic

volume

by

50%reducing

traffic

speed

by

25%第87页，共96页。Conclusions:

“Open-graded

asphaltshows

the

greatest

potential

for

noisereduction

for

passby

noise.

Reductionwhen

compared

to

dense-gradedasphalt

ranged

from

1

to

9

dB(A).”A

9dB(A)

reduction

corresponds

to:-

areduction

in

traffic

noise

byalmost

50%!第88页，共96页。OGFCsReduce

Noise

and

Improve

Visibility第89页，共96页。Noise

ReductionOpen

vs

Dense

Graded

MixesSource:

NCHRP

284第90页，共96页。

DOTs

indicate

a

strong

need

for

pavementnoise

control

strategies.

Proper

selection

of

pavement

surface

isthe

best

method

to

reduce

noise

frompavement/tire

interactions.第91页，共96页。What

Can

Be

Done?OGFC

is

the

quietest

surface

type.(Wayson,

NCHRP

Synthesis

268)

SMA

has

also

proven

to

be

a

quietsurface.

(Wisconsin

DOT,

1993)

Dense

graded

HMA

surfaces

arequieter

than

PCC

pavements.(Hibbs

andLarson,

Report

FHWA-SA-96-068,

May

1996)第92页，共96页。Effect

of

Pavement

SurfaceNoise

Makes

News!第93页，共96页。Families

Near

I-275

is

lobbying

the

Michigan

DOT

for

sound

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

England’s

10-year

plan

toinstall

quieter

surfac