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Austroads Guide to Road Tunnels

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Presentation on theme: "Austroads Guide to Road Tunnels"— Presentation transcript:

1 Austroads Guide to Road Tunnels
Development and overview of content L J Louis FIEAust CPEng RPEQ

2 Content of presentation
Introduction Austroads and ARRB Process of development Consultation Overall content Current status of the Guide Future

3 Introduction Background Intent of presentation
Austroads – who are they? Les Louis Intent of presentation Reason for the Guide Stakeholders Explain the consultation undertaken Discuss the content and rationale Explain the status of the document and its applicability Provide information on providing feedback

4 Austroads Membership: Six state and two territory road authorities
C’Wealth Dept of Infrastructure, Transport and Regional Development Australian Local Government Association New Zealand Transport Agency

5 Austroads Role of Austroads: Expert advice to Government
Facilitating collaboration between road agencies Promoting harmonisation, consistency and uniformity in road and related operations Undertaking strategic research Promoting 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.

6 ARRB Formerly the Australian Road Research Board
Created by Austroads members at the time (current shareholders) Government owned, independently run, not-for-profit research organisation Undertakes technical and strategic research for Austroads and its members Engaged by Austroads to produce this Guide

7 Need for Guide Major expenditure by Austroads members on tunnels
Lack of an agreed national technical standard Provide a source of information based on current knowledge Try to establish a common approach that does not need to be negotiated for each tunnel as it arises.

8 Need for Guide - Issues Uncertain structural design standards
Questionable geometric safety standards Poor attention to detail (e.g. leaks) High maintenance requirements High variability in safety standards and systems (e.g. spacing of escape doors) Variable environmental requirements Incorrect volumetric land acquisition e.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.

9 Purpose of the Guide Provide 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 tunnels Proponents of road tunnel solutions Senior decision makers (in an overview role) Regulators Users of this Guide will be able to determine standards for road tunnel design and operation acceptable to Austroads members.

10 Process of Development
Tunnel Technology Review Panel Drawn from Austroads members – all States, ARRB, C’wealth, NZ, LG represented Literature Review – Australia, NZ, PIARC, UK, Norway, Japan, USA Learnings from previous projects Significant input from: Australasian Tunnelling Society (ATS) Australian Tunnel Operators Group Consultation with industry specialists – Fire and Rescue, Consultants Specialist input including some writing Note 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)

11 Process of Development
Drafts written Reviewed by Panel Comments from Austroads Members Comments from ATS, ATOG, AFAC, CNI Revised Drafts and further review Review by Arnold Dix (Consultant and member of PIARC Committees on tunnels) Further drafts and review Final versions approved ATS: Australasian Tunnelling Society (part of Engineers Australia) AFAC: Australian Fire Authorities Council CNI: City North Infrastructure (Brisbane) ATOG: Australian Tunnel Operators Group

12 Consultation Input from a wide cross section of industry – ATS ATOG
AFAC City North Infrastructure (CNI) - Brisbane Robert Bertuzzi Arnold Dix ATS: 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 Butterworth CNI: Alex de Aboitiz, John O’Connell

13 Laerdal Norway road tunnel – 24.5km
Provided by Doug Maconochie – PB Three 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.

14 Overall Structure of the Guide
The Guide is in three parts: Part 1: Introduction to Road Tunnels Part 2: Planning, Design and Commissioning Part 3: Operation and Maintenance

15 Part 1: Introduction to Road Tunnels - Scope
Provides overview of requirements . . Details in the other two parts Gives guidance on the planning process to ensure that all of the necessary factors affecting the design, construction, maintenance and operation of the tunnel are considered Covers those matters that have a significant impact on the strategic planning of a tunnel solution

16 Part 1: Scope (cont.) Emphasis placed on risk analysis and management
Introduces process to establish the Fire Safety requirements Discusses 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.

17 Intended to give a general picture of the time frame required to implement a tunnel project.

18 Part 1: Contents Introduction Road Tunnel Implementation Process
General Planning Requirements Regulatory Requirements Traffic Considerations Structural Design Considerations Geometric Design Considerations . . .

19 Part 1 – Contents (cont.) Geotechnical Considerations
Drainage, Water and Flood Protection Functional Safety and Operations Environmental Considerations Construction Methods Commentary 1 - Types of tunnel construction

20 Part 2: Planning, Design and Commissioning - Scope
Sets out Austroads expectations for appropriate design Discusses expected approach to the design of the elements of the tunnel project . . and defines/refers to acceptable standards This document is intended to establish the benchmark for tunnel planning and design in Australia and New Zealand

21 Part 2 - Scope This Part does not deal with the refurbishment of existing tunnels nor the retro-fitting of components to existing tunnels Describes the commissioning phase Tunnels are evolving and therefore this is not intended to be an exhaustive treatment of road tunnels.

22 Part 2: Contents Introduction General Design Requirements
Structural Design Geometric Design Pavement Design Environmental Considerations Drainage design Fire safety Ventilation design Lighting design Electrical Supply design Note 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.

23 Part 2: Contents (cont.) Design for Monitoring and Control
12.1 Operations Management & Control Systems (OMCS) 12.2 Tunnel Control Centre 12.3 Communications System 12.4 Plant Management and Control Services Buildings and Plant Rooms 13.1 General 13.2 Design and Layout 13.3 Heating, Air-conditioning and Ventilation 13.4 Floor Loading 13.5 Lightning Protection 13.6 Building Security and Fire Protection Construction Issues Tunnel Commissioning Appendix A Horizontal Curves & Sight Distance.

24 Portal – East Link Tunnel - Victoria

25 Eastern portal – Lane Cove Tunnel - Sydney

26 Part 2 – some issues Design life of components
Concrete – sprayed, unreinforced, fibre reinforcing Design fire Transport of combustible liquids Dispersion of vitiated air from portals External air quality Commissioning requirements

27 Part 2 – some issues (continued)
Level of sophistication required for control systems and electrical requirements for regional tunnels and low traffic tunnels How many “bells and whistles”? Live loading above the tunnel on the surface Are we pricing tunnels out of the market?

28 3-lane road tunnel with permanent rockbolt and shotcrete support under construction
Courtesy – Doug Maconochie Courtesy: Dr Douglas Maconochie

29

30 Part 3: Operation and Maintenance - Scope
Sets out operational requirements of the systems described in detail in Parts 1 and 2 Describes the protocols required for interaction and coordination of the various authorities who are stakeholders in the operation of the tunnel Sets 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.

31 Part 3: Contents Introduction
General operation& Maintenance requirements Operations 3.1 Objectives 3.2 Methodology 3.3 Traffic Management 3.4 Incident Management 3.5 Operational Performance Maintenance Human Factors Training Environment

32 Current Status Part 1 – published July 2010

33 Current Status Part 2 - Published November 2010

34 Current Status Part 3 - Published August 2010

35 Current Status Now the adopted guide for all State road authorities
Individual authorities may produce supplementary guidelines Qld: Road Planning and Design Manual, Volume 3 – Guide to Road Tunnels

36 Qld Guide to Road Tunnels
Will adopt Austroads Guide with supplementary requirements e.g. Ramps (e.g. cross section) Cross section – e.g. shoulder widths Specific structural requirements (e.g. lining reinforcement) Specific requirements for bus ways To be developed this year

37 Future Proposed Workshops (ARRB) – 2012 Austroads welcomes feedback
One day seminar format Proposed for Brisbane, Sydney and Melbourne Austroads welcomes feedback Corrections Additions New information Send to

38 Summary The intention of Austroads is that this publication will provide for uniformity of practice in Australia and New Zealand The guidance provided in this edition is general in many areas . . Due to rate of change of technology Not a text book on tunnels . . Unlike Norwegian guide FHWA 2010 But 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).

39 Summary It 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


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