Presentation on theme: "Austroads Guide to Road Tunnels"— Presentation transcript:
1Austroads Guide to Road Tunnels Development and overview of contentL J Louis FIEAust CPEng RPEQ
2Content of presentation IntroductionAustroads and ARRBProcess of developmentConsultationOverall contentCurrent status of the GuideFuture
3Introduction Background Intent of presentation Austroads – who are they?Les LouisIntent of presentationReason for the GuideStakeholdersExplain the consultation undertakenDiscuss the content and rationaleExplain the status of the document and its applicabilityProvide information on providing feedback
4Austroads Membership: Six state and two territory road authorities C’Wealth Dept of Infrastructure, Transport and Regional DevelopmentAustralian Local Government AssociationNew Zealand Transport Agency
5Austroads Role of Austroads: Expert advice to Government Facilitating collaboration between road agenciesPromoting harmonisation, consistency and uniformity in road and related operationsUndertaking strategic researchPromoting improved and consistent practice by road agencies“This Guide is produced by Austroads as a general guide. Its application is discretionary. Road authorities may vary their practice according to local circumstances and policies.” Note that Guides have been adopted by all States as their basic “manuals” with local addenda to accommodate local circumstances or specific practices.
6ARRB Formerly the Australian Road Research Board Created by Austroads members at the time (current shareholders)Government owned, independently run, not-for-profit research organisationUndertakes technical and strategic research for Austroads and its membersEngaged by Austroads to produce this Guide
7Need for Guide Major expenditure by Austroads members on tunnels Lack of an agreed national technical standardProvide a source of information based on current knowledgeTry to establish a common approach that does not need to be negotiated for each tunnel as it arises.
8Need for Guide - Issues Uncertain structural design standards Questionable geometric safety standardsPoor attention to detail (e.g. leaks)High maintenance requirementsHigh variability in safety standards and systems (e.g. spacing of escape doors)Variable environmental requirementsIncorrect volumetric land acquisitione.g. Difficulties with the Boggo Road tunnel – cracking in lining; some problems with leaks in City link tunnels in Melbourne; banning of portal emissions appears to be a wasteful approach and needs rational approach; need to resolve the status of land above the tunnels and what can be done on that land.
9Purpose of the GuideProvide high level guidance to those making decisions in the planning, design, operation and maintenance of new road tunnels in Australia & NZ.To be used by-Engineers and technical specialists in tunnel technology working on the planning, design and operation of road tunnelsProponents of road tunnel solutionsSenior decision makers (in an overview role)RegulatorsUsers of this Guide will be able to determine standards for road tunnel design and operation acceptable to Austroads members.
10Process of Development Tunnel Technology Review PanelDrawn from Austroads members – all States, ARRB, C’wealth, NZ, LG representedLiterature Review – Australia, NZ, PIARC, UK, Norway, Japan, USALearnings from previous projectsSignificant input from:Australasian Tunnelling Society (ATS)Australian Tunnel Operators GroupConsultation with industry specialists – Fire and Rescue, ConsultantsSpecialist input including some writingNote that Austroads Guides are not the same as Australian Standards – they do not go through a public comment stage but input from industry and others is generally sought.Technology Panel: Chris Harrison (RTA); Tye Anthonisz (RTA); Matthew Callander (RTA); Ricky Cox (TMR); Steve DiCicco (VicRoads); Rudolph Kotze (NZ); Nigel Lloyd (NZ); Max Kupke (ACT); Kingsley Noble (SA); Ross Pritchard (TMR); Geoff Raynor (Vic – SEITA); John Venables (WA); Michael Tziotis (ARRB) PLUS: David Kelly (TMR); Jason Venz (TMR); Steve Messenger (RTA); Simon Knight (ATS); Greg Buyers (BCC)Individuals providing input: Robert Bertuzzi; Rob Butterworth; Doug Maconochie; Bruce Dandie; Ted Nye; Andrew Wheatley (ATOG); Arnold Dix; Victor Shapilsky (RTA); Bob Allen (ATOG)
11Process of Development Drafts writtenReviewed by PanelComments from Austroads MembersComments from ATS, ATOG, AFAC, CNIRevised Drafts and further reviewReview by Arnold Dix (Consultant and member of PIARC Committees on tunnels)Further drafts and reviewFinal versions approvedATS: Australasian Tunnelling Society (part of Engineers Australia)AFAC: Australian Fire Authorities CouncilCNI: City North Infrastructure (Brisbane)ATOG: Australian Tunnel Operators Group
12Consultation Input from a wide cross section of industry – ATS ATOG AFACCity North Infrastructure (CNI) - BrisbaneRobert BertuzziArnold DixATS: Simon Knight, Ted Nye, Doug Maconochie, Bruce Dandie, M Bilson (PB), C Hiscock (PB), P Gehrke (PB), A Purchase (PB),AFAC: Australasian Fire Authorities Council: Rob Llewellyn, Steven McKee (QFRS + others from QFRS), Ross Williams, Christine Iliaskos (MFB)ATOG: Australian Tunnel Operators Group: Bob Allan, Geoff McKernan, Andrew Wheatley, Russell Coffey, Rob Murr, Kingsley Noble, Matk Shotton, Daly Brennan, Ian Anderson, Jeni Galbraith, Shane Couch, John Connolly, Pat Hobday, Warren Jackson, Terry Braddley, Tassos Plakogiannis, Rob ButterworthCNI: Alex de Aboitiz, John O’Connell
13Laerdal Norway road tunnel – 24.5km Provided by Doug Maconochie – PBThree caverns along the tunnel to break up the journey. White light in tunnel but yellow and blue added in caverns to give the impression of daylight at those points.
14Overall Structure of the Guide The Guide is in three parts:Part 1: Introduction to Road TunnelsPart 2: Planning, Design and CommissioningPart 3: Operation and Maintenance
15Part 1: Introduction to Road Tunnels - Scope Provides overview of requirements . . Details in the other two partsGives guidance on the planning process to ensure that all of the necessary factors affecting the design, construction, maintenance and operation of the tunnel are consideredCovers those matters that have a significant impact on the strategic planning of a tunnel solution
16Part 1: Scope (cont.) Emphasis placed on risk analysis and management Introduces process to establish the Fire Safety requirementsDiscusses the effects of different construction methods, operational factors and maintenance needs that affect the details of the tunnel dimensions, equipment and facilities required.Note that this Part is very general with few specifics – they are in the other volumes where applicable.Identifies all of the issues to be considered – relies on the expertise of the practitioners for the detailed technical input.No attempt to address construction issues other than to identify the importance of the construction method on the design requiements.
17Intended to give a general picture of the time frame required to implement a tunnel project.
18Part 1: Contents Introduction Road Tunnel Implementation Process General Planning RequirementsRegulatory RequirementsTraffic ConsiderationsStructural Design ConsiderationsGeometric Design Considerations . . .
19Part 1 – Contents (cont.) Geotechnical Considerations Drainage, Water and Flood ProtectionFunctional Safety and OperationsEnvironmental ConsiderationsConstruction MethodsCommentary 1 - Types of tunnel construction
20Part 2: Planning, Design and Commissioning - Scope Sets out Austroads expectations for appropriate designDiscusses expected approach to the design of the elements of the tunnel project . . and defines/refers to acceptable standardsThis document is intended to establish the benchmark for tunnel planning and design in Australia and New Zealand
21Part 2 - ScopeThis Part does not deal with the refurbishment of existing tunnels nor the retro-fitting of components to existing tunnelsDescribes the commissioning phaseTunnels are evolving and therefore this is not intended to be an exhaustive treatment of road tunnels.
22Part 2: Contents Introduction General Design Requirements Structural DesignGeometric DesignPavement DesignEnvironmental ConsiderationsDrainage designFire safetyVentilation designLighting designElectrical Supply designNote that Austroads avoids repetition in its Guides so there is considerable cross referencing to other relevant guides throughout the text e.g. Guide to Road Design; Guide to Traffic Management.This Guide relies almost entirely on the Australian Standard AS 4825 Tunnel fire safety (no longer a draft – published in early 2011). Note that RTA has a three volume guide on tunnel fire safety as well – provides details of the process used in NSW as well as some comments on a range of techniques and systems that can be used in different circumstances.
23Part 2: Contents (cont.) Design for Monitoring and Control 12.1 Operations Management & Control Systems (OMCS)12.2 Tunnel Control Centre12.3 Communications System12.4 Plant Management and ControlServices Buildings and Plant Rooms13.1 General13.2 Design and Layout13.3 Heating, Air-conditioning and Ventilation13.4 Floor Loading13.5 Lightning Protection13.6 Building Security and Fire ProtectionConstruction IssuesTunnel CommissioningAppendix A Horizontal Curves & Sight Distance.
26Part 2 – some issues Design life of components Concrete – sprayed, unreinforced, fibre reinforcingDesign fireTransport of combustible liquidsDispersion of vitiated air from portalsExternal air qualityCommissioning requirements
27Part 2 – some issues (continued) Level of sophistication required for control systems and electrical requirements for regional tunnels and low traffic tunnelsHow many “bells and whistles”?Live loading above the tunnel on the surfaceAre we pricing tunnels out of the market?
283-lane road tunnel with permanent rockbolt and shotcrete support under construction Courtesy – Doug MaconochieCourtesy: Dr Douglas Maconochie
30Part 3: Operation and Maintenance - Scope Sets out operational requirements of the systems described in detail in Parts 1 and 2Describes the protocols required for interaction and coordination of the various authorities who are stakeholders in the operation of the tunnelSets the performance standards for the operation and maintenance of the facility as well as providing guidelines for operation of the various systems including the manuals and operating procedures required.Acknowledge the input from Ron Butterworth in the development of this Part – provided a rewrite of the first draft and further input as it developed from there.
35Current Status Now the adopted guide for all State road authorities Individual authorities may produce supplementary guidelinesQld: Road Planning and Design Manual, Volume 3 – Guide to Road Tunnels
36Qld Guide to Road Tunnels Will adopt Austroads Guide with supplementary requirements e.g.Ramps (e.g. cross section)Cross section – e.g. shoulder widthsSpecific structural requirements (e.g. lining reinforcement)Specific requirements for bus waysTo be developed this year
37Future Proposed Workshops (ARRB) – 2012 Austroads welcomes feedback One day seminar formatProposed for Brisbane, Sydney and MelbourneAustroads welcomes feedbackCorrectionsAdditionsNew informationSend to
38SummaryThe intention of Austroads is that this publication will provide for uniformity of practice in Australia and New ZealandThe guidance provided in this edition is general in many areas . . Due to rate of change of technologyNot a text book on tunnels . . UnlikeNorwegian guideFHWA 2010But does take position on some issues . . .e.g. emission from portals is accepted (with limitations); live loading in the vicinity of the tunnel (adjacent to it and above it).
39SummaryIt is not intended to provide any form of substitute for the special expertise that is needed to prepare effective and efficient working designs for a road tunnel