150525_IQPS_Bridges_Dubai_2015_Javad

2015 Bridges & Highway Conference UAE

Sustainable Upgrading of Urban Interchanges

Presented by Javad Akhtar Function Manager Bridges


Challenges for Upgrading Urban Interchanges

• Drivers for Change – Traffic Growth, Safety, Environment

• Adapt to Constraints of existing Infrastructure

• Need Sustainable Solutions – to cater for variety of

transport modes and road users

• Create Pedestrian and Cycle Friendly Environment

This presentation will address the specific challenges of some

generic projects which will be used as case-studies:


Existing Elevated Roundabout

Existing Bridges

3rd Level Fly-over

Proposal


Existing Bridges


Existing verses Proposed Structure

EXISTING

PROPOSED


Value Engineering Case-Study - 1

• Avoidance of planned 3-Level Interchange solution by adoption of

SPUI-type Signalised Junction Configuration

• Adoption of Spread Footing Foundations in lieu of piled

foundations recommended in original Geotechnical

Recommendations

• Precast “Crash-Deck” System – avoid separate steel frame

crash-deck and minimize height

• Jointless Structure – for reduced maintenance

• Avoidance of “Tunnel Effect” – maintain natural ventilation by

suitable junction layout


Avoidance of 3-Level Interchange

Demonstrate Traffic Capacity and Level of Service by Traffic

Simulation Modeling of SPUI Type Junction

• Reduced no of phases (3)

• Through movements East-

West can only be made

using underpass

• Existing Structure retained

to provide separate U-Turn

Movement


Spread Footing Foundations in lieu of piles

• GIR recommended piled foundations on medium-

dense sand (to avoid excessive settlements)

• Detailed stage settlement analysis undertaken

• Special precautions for pipes passing through the

structure

• Client support for approach


Precast “Crash-Deck” System

• Precast Voided Beam Deck with composite insitu topping

• Can be erected overnight/weekend – minimal traffic disruption

• No need for separate crash-deck, hence traffic can be permitted

under once secured, edge protected and sealed.

• No “Headroom raising” due to no separate steel formwork/crash deck

system

• Integral (joint-free) portal-frame construction

• Precast advantages of quality, speed, minimise site works


Integral Construction

• Insitu deck poured after precast beam placement

• No bearings

• Simple Expansion Joints in Asphalt itself


Openings in Deck retained to avoid Tunnel Effect

• No mechanical Ventilation etc. as Tunnel Classification avoided


Case Study 2 - Widening of 2-Cell Box-Underpass

• To improve the traffic

serviceability level of the

existing junction

• To improve pedestrian safety

Original Concept Proposals following

Traffic Studies:

20 m extensions to Underpass each side


Value Engineering Case-Study - 2

• Change layout of SPUI-type Signalised Junction to minimize

extension of structure (reduce 20m potential extension to only

3.5m)

• Adoption of Precast Deck Extension for rapid erection with

minimal traffic disruption

• “Worst-Case Scenario” appraisal of existing Structure to justify

supporting new extension (Sustainable use of existing)

• Jointless Structure – for reduced maintenance


minimizing extent of widening


Change layout of SPUI-type Signalised Junction

• Change layout of SPUI-type Signalised Junction to minimize

extension of structure (reduce 20m potential extension to only

3.5m)


minimizing extent of widening


Precast System for extension

Existing structure as support


THANK YOU

ANY QUESTIONS?

25 & 26 May 2015 Conrad Dubai, UAE

This is a draft agenda and is subject to change. This is a private document and is not for distribution or publishing.

Conference day one Monday, 25 May 2015 08:00 Start of conference registration with welcome refreshments 08:45 Opening remarks from IQPC and introduction to Chair 08:50 Opening remarks from the conference Chair and start of conference Achieving excellence in bridge and highway design and engineering 09:00 The impact of oil prices on the region’s transport and infrastructure market

The Middle East region is heavily dependent on its oil to finance the development of transport and infrastructure projects. Fluctuation in oil prices increases the vulnerability of oil producing countries to unstable economies and weak spending plans. Diversification of the economies is therefore essential national strategy for meeting development challenges and sustaining future prosperity. The presentation will discuss: • How fluctuations in the price of oil is shaping the region’s macro-economy and how it is defining the

regional priorities for expenditure on transport and infrastructure • Discussing future trends and the factors affecting growth drivers and growth restraints to meet these

trends Nidal Odeh, Project Director, Parsons Brinckerhoff

09:30 BIM and bridges – the next step for building better bridges? BIM has many great benefits if applied correctly which include more economical designs and improved

maintenance. BIM is fast gaining interest in the bridges sector however its application is not straight forward. The following presentation will provide a context for the use of BIM in bridges. More specifically: • Changing the way we spend our money - how can BIM improved capital expenditure on bridge assets • Improving the timeframe of project delivery through the application of BIM • Utilising BIM to transform asset management and maintenance from an afterthought to a structured

process Fareed Siddiqi, Director of Structures & Highways, AECOM

10:00 Panel discussion: Solving traffic woes through proper planning, engineering and construction of

transport infrastructure Congested cities, limited space and a drive for sustainability have placed pressure on engineers and

designers to innovate. The following panel will debate 3 core issues that industry professionals are currently dealing with in respect to bridges and highways: • Planning – are we planning in the best way possible to ensure best utilisation of limited city space,

interconnectivity between infrastructure and placement of roads and bridges? • Sustainability – what does this mean in the context of bridges and highways and to what extent do we

pursue alternative building materials such LED lighting ad recycled materials • Best practice in construction – considering broader aspects of bridge and highway construction, including

safety, sustainability and delivery Dr Ghassan Ziadat, Director of Planning and Infrastructure, Atkins Neil Walmsley, Director, Middle East Planning Leader, Arup Fareed Siddiqi, Director of Structures & Highways, AECOM Dr Ali A. Mahdi, Associate Director - Bridges and Tunnels, WSP Middle East Dr. Praveen Maghelal, Associate Professor - Sustainable Critical Infrastructure Planning, Department of Engineering Systems and Management, Masdar Institute

10:40 Networking break and refreshments 11:10 Case study: Planninf for and constructing bridges in congested urban environments

Frederic P. Legeron, Bridge & Tunnel UAE District Manager, Parsons 11:40 MSM®2, the second generation of Maurer Sliding Material in Bridge bearings

• Properties of the new material • Description of the cold flow test with 40 MPA and 60° C • Comparison to other sliding materials Raad Hamood, Sales Director, Middle East & North Africa MAURER AG



12:10 Case study: Designing and delivering the King Abdullah Financial District monorail KEO was awarded the design contract for the Riyadh Monorail which is an important transport link for the King

Abdullah Financial District. The following presentation will discuss the design of the 3.5Km elevated sections, rail viaducts, switch bridges, long span bridges and 131 piers. In addition: • Demonstrating unique design elements of the monorail that support durability and maintenance • Overseeing the construction of the monorail though congested areas and minimising impact on project

schedule Walid Farahat, Project Manager, KEO International Consultants

12:40 Engineering fit for purpose interchanges and structures to meet traffic demand without exceeding

budget As consultants it is our responsibility to ensure the projects we deliver are fit for purpose. We are faced with

the challenges imposed by market conditions, client demands and the job to produce the required functionality. The following presentation will address these challenges, more specifically: • Applying value engineering principles to deliver cost effective and fit for purpose infrastructure • Conducting effective transport studies to facilitate effective planning and design • Improving maintenance through standardisation of products and components Javad Akhtar, Function Manager – Bridges, Hyder Consulting Middle East

13:10 Lunch and networking

Road safety master class 14:30 Road safety master class: Considerations for safer highways Safety is a major concern across the Middle East for not only government but also for consultants and contractors working on various bridge and highway projects. In the following master class we will deal with different aspects of road safety, specifically related to driver behaviour and safety in and around work zones. The objective of this workshop is to provide a basis for discussion and development of best practice in safety for not only road users but also for the people that build roads. More specifically, we will focus on:

• Changing driver behaviour in and around work zones • Training and onsite inspection • Communicating with stakeholders and end users to create awareness

16:00 Wrap up and end of conference day one



Conference day two Tuesday, 26 May 2015 08:00 Start of conference registration with welcome refreshments 08:45 Opening remarks from IQPC and introduction to Chair 08:50 Opening remarks from the conference Chair and start of conference Prevention over cure – safeguarding the integrity of bridges and highways through material development, design reviews and improved construction methods 09:00 Material analysis and the impact of materials selection on the quality and durability of bridges and

highways The quality of what we construct is heavily reliant on the materials used during construction. The materials

that are used in construction can also have a significant influence on sustainable practices and development of bridges and highways. The following presentation will cover: • Analysing current material standards and their effect on bridge and highway durability • Developments in materials that offer more robust and sustainable construction qualities Prof. Rashid K. Abu Al-Rub, Associate Professor, Department of Mechanical and Materials Engineering Masdar Institute

09:30 Overview of bridgedeck waterproofing systems

• An overview of why we need bridge deck waterproofing • A new Sika innovation to increase safety & reduce maintenance costs • Sika case studies including the iconic Sydney Harbor Bridge Dirk Uebelhoer, Corporate System Engineer, Sika Services AG

10:00 Let’s talk maintenance: Discussing strategies to enhance the life of bridge and highway assets

Developing a maintenance regime should not be the starting point to good maintenance. Maintenance should be considered right from the design phase and throughout the construction and delivery phase. The following panel will discuss: • Reviewing road and highway designs to reduce dependency on active maintenance • Assessing materials used during construction that affect durability and integrity of bridges • Standardisation of materials and components – is this possible? • Ensuring bridge stock is kept in the right condition to support through life support Dr. Walid Damaj, Road Structures Advisor, Al Ain Municipality Javad Akhtar, Function Manager – Bridges, Hyder Consulting Middle East Nidal Odeh, Project Director, Parsons Brinckerhoff

10:40 Networking 11:10 International case study: Reducing maintenance requirements through the design of ‘maintenance

free’ bridges Although it is not plausible to design bridges completely free of maintenance, the practice of designing

maintenance free bridges can greatly assist in delivering structures with lower maintenance costs by eradicating unnecessary components. The following presentation will cover: • Consideration of deterioration and service disruption probability in bridge design • Integral bridges – are there limits? • Procurement – are we doing it right? Raul Vibo, Design Manager – Infrastructure, Ramboll

11:40 Materials that support faster more durable infrastructure

• Solutions to support lateral and vertical movement • Maximising bridge lifespan • Considerations for high load environments and seismic movements Presentation by Ocean Rubber Factory

12:10 Lunch and networking followed by transport planning workshop



Transport planning master class Overview Sustainability is a broad term and its definition is not always understood, especially in its application to transportation and transport infrastructure. So, just what exactly does it mean to have sustainable transport modes and how do you plan for this? The following master class will address the issues of sustainable transport planning through the delivery of global perspectives, policy review and also seek to provide a definition of sustainable transportation. The objective of this master class is to initiate discussion on how to best address transport planning in the UAE and to ensure that sustainable practices are not only achieved but also sustained. 13:10 SESSION ONE: Defining sustainable transportation and its development

• Overview of sustainable transport planning • What is the importance and how will this impact local government and engineering consultants

14:10 Refreshment break 14:30 SESSION TWO: Comparing models, policies and planning methods

• Assessment of existing infrastructure • Policy reviews and comparisons • Assessing global ‘best practice’

Your master class leader: Dr. Praveen Maghelal Associate Professor - Sustainable Critical Infrastructure Planning Department of Engineering Systems and Management, Masdar Institute Dr. Praveen Maghelal has an interdisciplinary educational and professional background in civil engineering, architecture, and urban planning. He obtained his doctorate in Urban and Regional Sciences from the Texas A&M University and has taught at the Florida Atlantic University and the University of North Texas before joining Masdar Institute in 2015. Dr. Maghelal’s research focuses on planning sustainable communities with sustainable modes of transportation. His work investigates the role of the built environment on sustainable and active modes of transportation, the relationship of land use and transportation on healthy communities, and the relationship of land use on sustainable modes of transportation such as walking, biking, and public transportation. He has published in top journals in planning such as the Journal of Planning Education and Research, Transportation Research and his co-authored article won the Best Article Award from the Journal of American Planning Association. 15:30 Closing remarks from master class and end of day two

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150525_IQPS_Bridges_Dubai_2015_Javad