AASHTO-FHWA Technology Endorsement Construction...
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Construction Analysis for Pavement Rehabilitation Strategies for AASHTO Subcommittee on Construction Aug 5, 2009 Dr. E.B. Lee University of California at Berkeley Institute of Transportation Studies AASHTO-FHWA Technology Endorsement
Transcript of AASHTO-FHWA Technology Endorsement Construction...
Construction Analysis for Pavement Rehabilitation Strategies
for AASHTO Subcommittee on Construction
Aug 5, 2009
Dr. E.B. Lee
University of California at BerkeleyInstitute of Transportation Studies
AASHTO-FHWA Technology Endorsement
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CA4PRS, Tool for Highway RenewalCA4PRS, Tool for Highway RenewalCA4PRS, Tool for Highway Renewal
• Highways Renewal for Sustainability– State & Interstates highways reached their design life– DOTs shift their focus to highway sustainability (4-R)
• Work-zone Impacts and Mitigation– Adverse Impact: Mobility (12%) and Safety (40,000)– FHWA 2008 Regulation: WZ Assessment and TMP
• CA4PRS Software: WZ Evaluation Tool– Pooled-fund (CA, FL, MN, TX, WA): UC Berkeley 2003– AASHTO Promotion (CAST: WZ Traffic Tools)– FHWA Outreach
• 2009 Market-ready Innovation and Technology Product• Arranged Group-License (Free) for all 50 State DOTs• User Trainings: 1,000 Engineers in 20 states
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CA4PRS Nation-wide Promotion (FHWA-AASHTO)CA4PRS NationCA4PRS Nation--wide Promotion (FHWAwide Promotion (FHWA--AASHTO)AASHTO)
Hands-on training workshops1,000 engineers: Caltrans + 20 DOTs
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CA4PRS Alternatives Comparison ProcessCA4PRS Alternatives Comparison ProcessCA4PRS Alternatives Comparison Process
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CA4PRS Alternatives (What-if) ComparisonCA4PRSCA4PRS Alternatives (WhatAlternatives (What--if) Comparisonif) Comparison• Pavement Type => Loner-life Design
– JPCP, CRCP, Slab- or lane-replacement– Overlay (CSOL), Milling-filling AC, Full-depth AC – Cross-section, Thickness, Mix, Base type
• Work-zone Traffic => Minimum Delay– Construction window: Night-time, Day, Weekend, Continuous– Closure hour sensitivity
• 7-h, 8-h, 9-h closures: Schedule –Traffic - Cost– Lane closure schemes: Full vs Partial closures– WZ capacity, Demand reduction, Detours
• Contractor’s Logistics => Accelerated Construction– Site access and Construction sequence– Constructability (demo/mix): Resource constraints
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Concrete Pavement Cross-sectionsConcrete Pavement CrossConcrete Pavement Cross--sectionssections
(b) Concrete Slab Replacement
CONCRETE 205mm (8")
CTB 102mm (4")
AB 305mm (12")
SG
CONCRETE 305mm (12")
BASE 152mm (6")
AB 152mm (6")
SG
(c) Concrete Slab & Base Reconstruction(a) Milling Filling AC
ORExisting AC Pavement
51 mm
76 mm25 mm
0.5 hour
1 hour0.5 hour
Type C
Type CRAC-O
CA4PRS Compares Cross-section Change Alternatives from SCHEDULE-TRAFFIC-COST
Perspective, as the baseline of LCCA.
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Closure <=> Access <=> ProductionFull Closure for Concurrent MethodClosure <=> Access <=> ProductionClosure <=> Access <=> ProductionFull ClosureFull Closure for for Concurrent MethodConcurrent Method
Mobilization
Demolition Base PavingPCC Paving
Demobilization0.0
0.3
0.5
0.8
1.0
0 12 24 36 48 60 72 hour
prog
ress
(km)
More Closure=>
Better Access=>
Faster Schedule;
Higher Delay
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Closure <=> Access <=> ProductionPartial Closure for Sequential MethodClosure <=> Access <=> ProductionClosure <=> Access <=> ProductionPartial ClosurePartial Closure for for Sequential MethodSequential Method
Mobilization
Demolition Base Paving PCC Paving
Demobilization0.0
0.3
0.5
0.8
1.0
0 12 24 36 48 60 72 hour
prog
ress
(km)
Less Closure=>
Limited Access=>
Slower Schedule
Less Delay
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PCC Slab-Cracking & Excavation MethodPCC Slab Saw-cut & Lift Method
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HMA (AC) Constructability CheckHMA (AC) Constructability CheckHMA (AC) Constructability Check
(Aggregates: Granite)
(Aggregates: Limestone)
Milling Machine Production(Wirtzen W1900 Model)
AC Cooling-time Multi-cool Analysis
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I-15 Devore WZ Capacity: Full-closure Dynamic Lane Configuration Using QCMB
II--15 Devore WZ Capacity: Full15 Devore WZ Capacity: Full--closure closure Dynamic Lane Configuration Using QCMBDynamic Lane Configuration Using QCMB
QCMB Operation VideoQCMB Operation VideoQCMB Operation Video
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I-10 Pomona Concrete (4-h Mix) Project, 2000II--10 Pomona Concrete (410 Pomona Concrete (4--h Mix) Project, 2000h Mix) Project, 2000
1.5 mile PCC slabs Replaced: 55-h Weekend1 x Weekend closure = 40 x 7-h night closures
12 l-m Slab-replacement (Nighttime vs Weekend)
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I-710 Long Beach AC Rehabilitation Project, 2003II--710 Long Beach AC Rehabilitation Project, 2003710 Long Beach AC Rehabilitation Project, 2003
18 lane-mile of Long-life CSOL or FDAC8 x 55-h Weekend Closures (ADT = 120,000)
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I-15 Devore PCC Reconstruction ProjectII--15 Devore PCC Reconstruction Project15 Devore PCC Reconstruction Project
CA4PRS SoftwareDemonstration
• Two truck-lane PCC reconstruction– 3-4 lanes / direction, 120,000 ADT – 10 lane-mile (2.5 mile x 2 lanes x 2 dir) PCCP – 12” JPCP / 6” ACB, using 12-h mix RSC
• CA4PRS analysis: Design=>Construction– Schedule – Traffic – Cost Comparison– Nighttime Closures: 7-h, 8-h, 9-h closures– Extended Closures: 55-h weekend, 3-day weekday, 24/7
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I-15 Devore Daily Traffic Patterns- Approximately 120,000 ADT (10% trucks)- Weekdays Commuters + Weekend Leisure
II--15 Devore Daily Traffic Patterns15 Devore Daily Traffic Patterns-- Approximately 120,000 ADT (10% trucks)- Weekdays Commuters + Weekend Leisure
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1,000
2,000
3,000
4,000
5,000
6,000
1 3 5 7 9 11 13 15 17 19 21 23Time of day
Veh
icle
s pe
r ho
ur
SB (Mon-Thu) SB (Sun)NB (Mon-Thu) NB (Fri)
Expected CWZ capacity
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II--15 Devore Pre15 Devore Pre--construction Analysis construction Analysis CA4PRS ScheduleCA4PRS Schedule--TrafficTraffic--Cost ComparisonCost Comparison
TotalClosures
ClosureHours
Max.Delay(Min)
Delay (RUC)Cost ($M)
AgencyCost ($M)
TotalCost ($M)
One RoadbedContinuous (24/7) 2 400 80 5.0 25.0 30.0
72-Hour WeekdayNon-stop 8 576 50 8.0 26.0 34.0
55-Hour WeekendExtended 16 880 80 14.0 27.0 41.0
9-Hour NighttimeClosures 230 2,100 50 7.0 31.0 38.0
8-Hour NighttimeClosures 300 2,400 20 3.0 33.0 36.0
7-Hour NighttimeClosures 410 2,900 10 1.0 35.0 36.0
ConstructionScenario
ConstructionSchedule
CostWZ Traffic Delay
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CA4PRS Implementation in Project Life Cycle & Enhancement
CA4PRS Implementation CA4PRS Implementation in Project Life Cycle & Enhancementin Project Life Cycle & Enhancement
• Planning Stage (PSR/PA&ED): Scope and Priority– VE Analysis and Life-cycle Cost Analysis
• Design Stage: PS&E & TMP packages– Working-days (CPM); Construction staging-plans – WZ Traffic: TMP and Lane-closure charts
• Construction Stage– Validate contractor’s work-plans and CCO
• Upcoming (Continuing) Enhancements– Current V2.1 (M & R): Schedule-Traffic-Cost– V2.5 Roadway Widening– V3.0 Pre-cast Rehabilitation– V3.5 Bridge Replacement
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More CA4PRS Information?More CA4PRS Information?More CA4PRS Information?• Contacts
– Dr. E.B. Lee: UC Berkeley-ITS• (510) 665-3637; [email protected]
– Keith M. Platte : AASHTO Materials and Product Evaluation• 202 624 7830; [email protected]
– Michael Samadian: Caltrans Research• (916) 324-2048; [email protected]
– Dr. Nadarajah Sivaneswaran (Siva): FHWA Turner-Fairbank • (202) 493-3147; [email protected]
– Ken Jacoby: FHWA Office of Asset Management• 202-366-6503; [email protected]
• GOOGLE “CA4PRS”http://www.dot.ca.gov/hq/research/roadway/ca4prs/index.htm
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ShoulderS
houlder
New
Shoulder
GP lanes
New
Express (toll) lane
GP lanes
CA4PRS => Life-Cycle Cost Analysis: I-15 HOT30 Analysis (10 construction x 3 criteria)
CA4PRS => LifeCA4PRS => Life--Cycle Cost Analysis: ICycle Cost Analysis: I--15 HOT15 HOT30 Analysis (10 construction x 3 criteria)30 Analysis (10 construction x 3 criteria)
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