austroads guide to road tunnels development and overview of content l j louis fieaust cpeng rpeq
TRANSCRIPT
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Austroads Guide to Road Tunnels
Development and overview of content
L J Louis FIEAust CPEng RPEQ
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Content of presentation
Introduction Austroads and ARRB Process of development Consultation Overall content Current status of the Guide Future
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Introduction Background
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
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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
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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
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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
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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
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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
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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.
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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
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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
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Consultation Input from a wide cross section of
industry – ATS ATOG AFAC City North Infrastructure (CNI) -
Brisbane Robert Bertuzzi Arnold Dix
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Laerdal Norway road tunnel – 24.5km
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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
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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 . . .
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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.
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Part 1: Contents
1. Introduction2. Road Tunnel Implementation Process3. General Planning Requirements4. Regulatory Requirements5. Traffic Considerations6. Structural Design Considerations7. Geometric Design Considerations . . .
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Part 1 – Contents (cont.)
8. Geotechnical Considerations9. Drainage, Water and Flood Protection10. Functional Safety and Operations11. Environmental Considerations12. Construction Methods
Commentary 1 - Types of tunnel construction
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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
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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.
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Part 2: Contents1. Introduction2. General Design Requirements3. Structural Design4. Geometric Design5. Pavement Design6. Environmental Considerations7. Drainage design8. Fire safety9. Ventilation design10. Lighting design11. Electrical Supply design . . .
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Part 2: Contents (cont.)12. 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
13. Services Buildings and Plant Rooms13.1 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
14. Construction Issues 15. Tunnel CommissioningAppendix A Horizontal Curves & Sight Distance.
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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
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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
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3-lane road tunnel with permanent rockbolt and shotcrete support under construction
Courtesy: Dr Douglas Maconochie
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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.
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Part 3: Contents1. Introduction 2. General operation& Maintenance
requirements 3. Operations
3.1 Objectives3.2 Methodology3.3 Traffic Management3.4 Incident Management3.5 Operational Performance
4. Maintenance5. Human Factors 6. Training 7. Environment
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Current Status
Part 1 – published July 2010
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Current Status
Part 2 - Published November 2010
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Current Status
Part 3 - Published August 2010
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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
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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
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Future Proposed Workshops (ARRB) – 2012
One day seminar format Proposed for Brisbane, Sydney and
Melbourne Austroads welcomes feedback
Corrections Additions New information Send to [email protected]
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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 . . .
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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