JNTUA COLLEGE OF ENGINEERING KALIKIRIDEPARTMENT OF CIVIL ENGINEERING

THE ORESUND BRIDGE By SAI KARTHIK K.R (13KA1A0152)

CONTENTS

Introduction Why such combined structure ? Solution Components Construction Load transfer Conclusion

INTRODUCTION

This Amazing Bridge Turns Into a Tunnel and Connects Denmark and Sweden

A part of the Bridge is above water and it runs nearly 8 km.

The remaining part of the Bridge is a tunnel of 4 km

Why such combined structure of BRIDGE,TUNNEL & AN ARTIFICIAL ISLAND?

The shoreline on the Danish side with the Copenhagen international airport,Kastrup by the building a bridge with Hightower's would have obstructed air traffic and could lead to a tragedy.

While building a low bridge would have been safer for air traffic but then it would have blocked Denmark ships.

Solution

To built an under water tunnel close to the airport and bridge on other side which would be cheaper solution

Means…….. A tunnel turn into a bridge in the middle of the open sea which requires island with the tunnel could emerge from the water.There were no island existed so engineers decided to build one.

Three main segments of The Oresund Link

On the Denmark side, the link begins with a 3,510-meter (2.2-mile) underwater tunnel.

The tunnel emerges from the water into a roadway on a 4,055-meter (2.5-mile) artificial island, Peberholm, which appears as a bright white shape to the south of the natural island in the scene.

The cable-supported Oresund Bridge stretches 7,845 meters (4.9 miles) across the eastern part of the Strait toward Sweden, making a thin white line across the image.

Construction of bridge

Most of the bridge structures – the bridge piers and bridge spans – were built on land and subsequently towed out to the bridge alignment by a large floating crane.

The pylons were cast in situ.

LOAD TRANSFER

It has BEARINGS weighing up to 20t each, capable of bearing vertical loads up to 96,000 kN in a longitudinal direction and up to 40,000 kN in transverse direction.

The design, manufacturing and installation of the bearings were carried out by the SWISS CIVIL ENGINEERING firm MAGEBA.

Each tunnel element is 176 metres long, 49 metres wide, approximately 9 metres high and weighs around 57,000 ton.

The towing of the elements demanded great skill and precision.

in the construction phase a radar station was established to monitor shipping and guide vessels through the work areas thus avoiding any major accidents. 

Immersed Tunnel

CONCLUSION

Has increased employment throughout the region.

1.83 million people are working in region, with over 18000 commuters not included in this number.

Around 35 million people travel this route every year.

Reduced air pollution by 50% as it replaced ferry transport.

Increased circular mobility; helped to reduce the shortage of labor in Denmark and has boosted the property market in Sweden.

ReferencesBoge, Knut (2006). Votes Count but the Number of Seats Decides: A comparative historical case study of 20th century Danish, Swedish and Norwegian road policy. (Ph.D.). DBI Norwegian School of Management. Retrieved 11 January 2016.

Centre for Mega Projects in Transport and Development (2014). "Project Profile: Sweden, The Oresund Link" (PDF). OMEGA Case Studies. Retrieved 16 January 2016.

"Migrant crisis: Sweden border checks come into force". BBC News. 4 January 2016. Retrieved 4 January 2016. Baunkjær, Claus F. (28 March 2013). "Cautious traffic assumptions for the Fehmarnbelt project". Fehmarn Belt Fixed Link. Retrieved 20 November 2015.

 Ekonomiska vinster av Øresundsförbindelsen (PDF) (in Swedish). Öresund Institute. November 2014. Retrieved 20 November 2015.

THANK YOU !