Art & Science of Bridge Engineering - A World Scenario

Vinay Gupta, Director & CEO, Tandon Consultants Pvt. Ltd.
Science of Bridge Engineering - A World Scenario

The world has progressed beyond imaginations. Similar to the field of IT, Civil Engineering has also taken several steps forward to bring out innovative technologies to meet challenges of this world’s aspirations. Going forward from just meeting out the functional needs, construction speed has become an important aspect. Led by the inspirations of high speed computers, fast track construction is found inevitable, even though it may not be the cheapest. When it comes to BOT project, economics lies in speed of construction apart from materials cost, so that Toll earnings can be realized faster by the concessionaire/owner. It has also become equally important to have an inception of aesthetics, especially in the case of urban structures, for obvious reasons. Recently, a trend is picking up, wherein architects are engaged in bridge architecture. Lastly, every country wants to create a landmark and world record by constructing largest span bridge on its land. Of the available technologies, Cable Stayed technology, Extradosed Bridge technology and Suspension Bridge technology have led to largest span ranges. Largest span in Cable Stay technology is about 1200m, that in Extradosed technology is about 250m and that in Suspension Bridge technology is about 2000m. A far reaching imagination will entail a span that would bridge different cities.

Aesthetical Bridges
When it comes to aesthetics in bridges, the first and common form, usually thought of is Arch Bridges. One of the simplest form of arch bridge can be seen in the award winning project of Dodan Nallah bridge (see fig. 1), wherein aesthetic matching with the surroundings has turned out to be an eye catching feature. In case of Rottwell Arch Bridge in Germany (150m span), the arch rib has been constructed using Stay Cantilevering Technique and the deck has been constructed using Incremental Launching Technique (See fig.2).

Science of Bridge Engineering - A World Scenario

Similarly, in the case of 180m span Tennessee Route Bridge in the USA, the deck was constructed using Balanced Cantilever Construction Technique (see fig.3).

Science of Bridge Engineering - A World Scenario

Learning from the international experience, a 120m span arch has been constructed over turbulent river Parvati in Himachal Pradesh, India (see fig. 4). The 30m high Arch Rib was constructed using Stay Cantilevering Technique, as any staging placed in the river bed would be washed off due to highly turbulent waters. The 45m high temporary steel pylons (see fig. 5) has been provided with Back Stays at 30m height and 45m height connected to reaction blocks to carry horizontal and vertical force components. The forward stays support the arch rib at all stages of its construction. Once the arch rib is joined, all temporary pylons, back stays and forward stays are removed. Thereafter, the deck slab was cast using formwork hanging with wire suspenders (see fig. 6). These hangers later formed part of permanent suspension for the deck slab. An arch bridge has its own charm in hilly terrain.

Science of Bridge Engineering - A World Scenario

AIIMS flyover in Delhi has successfully conveyed that even a fat structure can be made to look aesthetically pleasing, which is a must in an Urban Infrastructure Project (see figs. 7, 8 & 9). The piers have been architecturally camouflaged with the corresponding superstructure. High seismicity of the area has been taken care of by incorporating separate seismic attachments, while the main POT bearings carry only the vertical loads.

Science of Bridge Engineering - A World Scenario

Girder Slab Bridges
This is one of the most common, simplest and cheapest forms of bridge superstructure. The project of Delhi-Gurgaon Expressway in Delhi (see fig. 10 & 11), has made use of 1800 nos. Precast Pretensioned Girders for continuous superstructure. Similarly, Kuantan River Bridge in Malaysia (see fig. 12) has made use of 40m span, closely spaced Precast Post-Tensioned Girders for continuous superstructure.

NBM&CW March 2020

Click Here
To Know More / Contact The Manufacturer
Please provide your details we will contact you as soon as possible
Invalid InputPlease let us know your name.
Please let us know your Designation.
Invalid Input
Please let us know your email address.
Please let us know your City.
Please let us know your Contact Number.
Please brief your query.
Our other value-added services:

To receive updates through e-mail on Products, Technologies, equipment, please Select the Product Category(s) you are interested in and click Submit. This will help you not only to save time but also to get best quote for right products from many manufacturers of the same category; it helps you to evaluate and negotiate the best price.

Equipment & Machinery
Invalid Input
Building Products
Invalid Input

Construction of New Brahmaputra Bridge & Road Works Near Tezpur - An Insight...

Brahmaputra is one of the longest river in Asia with a total length of 2880 km & out of which 920km (approx.) lie in India. The New Brahmaputra Bridge @ Tezpur is one of the most challenging one, in the attempt to bridge Read More ...

Slope erosion protection of bridge approach embankment

The road and railway crossing across the Brahmaputra on National Highway-52B is located at Bogibeel, about 17km downstream of Dibrugarh in Assam. The location is an area of high intensity rainfall (the annual rainfall ranges Read More ...

Dhola Sadiya - India's Longest River Bridge

The bridge lies in the state of Assam, but this location is usually referred to as upper Assam as it is far away from Guwahati and bordering China. The nearest airport is Dibrugarh. Then there is a drive of 65km into the Read More ...

Innovation in Bridges Components and Materials

The Infrastructure Industry is continuously evolving; new roads, elevated corridors, expressways, railways, dedicated corridors, metros, mono-rails are being constructed all the time. They also require constant Read More ...

World's Most Amazing Bridges

The 6.5 feet wide walkway in the Hongyagu Scenic Area in Hebei province hangs 755 feet above the ground, and is the world's longest bridge, which opened in 2017-end. Designed by Tel Aviv architect Haim Dotan Read More ...

An Experimental Study to Estimate Loss of Prestress and Determining Fundamental Natural Frequecny of Prestressed Concrete Bridge

Prestressed Concrete (PSC) structures especially bridges are being largely used all over the world due to their multifarious advantages in terms of structural behaviour, economy as well as aesthetical Read More ...

Experimental Investigations on the Structural Behaviour of a Distressed Bridge

Four Span Pipe Bridge
Distressed structures require necessary remedial measures in order to restore their original structural properties like strength and stiffness. Validating the effectiveness of the proposed qualitative remedial Read More ...

World’s Aesthetic Foot Bridges

Foot Bridges
Footbridges have a longer history than road or railway bridges. Ancient footbridges comprised of natural materials such as roots of trees, ropes, stones, masonry, and wood. Modern footbridges are built Read More ...

Load Testing of Second Thane Creek Bridge, Mumbai

Thane Creek Bridge
Load testing is done to determine the safe load carrying capacity of structures, determining if specific legal or overweight vehicles can safely cross the structure or needs to be restricted and the level of post Read More ...

Corrosion Preventive Methods Adopted for Concrete Bridges During Construction

Bridge in Central Kerala
Cement concrete is a versatile building material and is the second most consumed material in the world, after water. It is made using porland cement, coarse, and fine aggregates, water and one or more Read More ...

Recent Developments in Design and Construction of Concrete Road Bridges

Concrete Road Bridges
Planning, design and construction of bridges and flyovers is very challenging at places with space constraints. There has been rapid development with the availability of high strength steel and concrete Read More ...

Integral Abutment Bridges

Integral Abutment Bridges
The conventional bridges use expansion joints and bearings to accommodate the thermal movements of the bridge. However, they don't completely eliminate the distress caused because Read More ...

Restoration of 45 Years Old PSC Bridge by External Post Tensioning

Bridge Restoration
The use and advantages of Post Tensioning are very well known in the Civil Engg Industry as it has been in use for the last 40 to 50 years. Post tensioning is one of the best methods to induce stresses in the concrete Read More ...

Signature Bridge: A Landmark Engineering Marvel in the Making

Signature Bridge
Wazirabad Bridge or Signature Bridge Project is an initiative of Delhi Government, planned during the Commonwealth Games. It was conceptualized to be a landmark tourist icon that would also speed Read More ...

Analysis of Integral Abutment Bridge by Grillage Method

Integral Abutment Bridge
An integral bridge may be defined as having no expansion joints or sliding bearings, the deck is continuous across the length of the bridge. Integral bridges are alternatively referred to as integral abutment Read More ...

Soil Structure Interaction of Integral Bridge Using Finite Element Method

Soil Structure Interaction
A type of bridge that is used extensively in road applications in particular is the integral abutment bridge (IAB). The concept of "integral abutment bridge" has recently become a topic of remarkable Read More ...
NBM&CW

New Building Material & Construction World

New Building Material & Construction World
MGS Architecture

Modern Green Structures & Architecture

Modern Green Structures & Architecture
L&ST

Lifting & Specialized Transport

Lifting & Specialized Transport
II&TW

Indian Infrastructure & Tenders Week

Indian Infrastructure & Tenders Week