Integral Abutment Bridges

Girish Kumar, Student, Department of Civil Engineering, NITK Surathkal
Sivakumar Babu G L, Professor, Department of Civil Engineering, Indian Institute of Science, Bangalore

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 of the expansion and contraction of deck. In turn, they create maintenance and installation problems associated with the joints. In this regard, Integral Abutment Bridge (IAB) is an effective and economical alternative for conventional bridges. The IABs eliminate the need to provide deck joints and thereby alleviate the maintenance problem considerably. This paper provides a review on the integral abutment bridge construction method and also discusses the potential benefits of using IABs. It also enumerates few limitations associated with the integral bridges and illustrates some proposed measures to mitigate these problems.

Introduction

The design of the conventional bridges as multiple simply supported spans always prompted the bridge engineers to deliberately install various joints and bearings at the supports. This was to check and allow the displacements due to cyclic thermal loading. However, the introduction of moment distribution method in 1930 by professor Hardy Cross, contemplated with new avenues in bridge design. This paved way for use of integral abutment type bridges. Integral abutment bridges are continuous bridges, where the deck is rigidly connected to the abutments and approach slabs. This rigid connection allows integral bridges to act as a single unit in resisting thermal and axle loads. A typical integral abutment bridge system is shown in Fig. 1. The need for jointless bridges evolved from the desire to eliminate the use of expansion joints and bearings. Here, in such kind of bridges, superstructure is constructed integrally with the abutments and normally these abutments are supported by rows of vertically driven flexible piles.

Integral abutment bridges have gained prominence throughout the United States from the 1930s and have since then become more common, especially for bridges with short, continuous spans. Traditionally the foundation of the abutments consists of a single row of flexible piles that are placed in pre augured holes up to a certain depth [10]. The holes are then backfilled with granular material. The pile heads are either fixed at the point of connection with the abutment walls or they are pinned. They also include an approach system where an approach slab is in immediate connection with the deck and abutment.

This section of the article is only available for our subscribers. Please click here to subscribe to a subscription plan to view this part of the article.

The former Prime Minister of India Shri H D Devagowda laid the foundation stone of the Bogibeel Bridge on January 22, 1997 at Kulajan (Assam). After 5 years of laying of the foundation, on April 22, 2002 the Prime Minister of India Shri Atal Behari Vajpayee

Read more ...

As part of Northeast Policy, the Ministry of Railways took up the project of providing rail connectivity to Imphal in Manipur state. As per the detailed survey, the rail alignment takes off from existing Jiribam

Read more ...

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 ...

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 ...

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

Read more ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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
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 ...

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
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 ...

Cracks in Ravi Bridge
Before carrying out any testing of the concrete structures using NDT methods, visual inspection of the structure is a must. Visual inspection is not confined to the surface, it also include examination of bearings

Read more ...

×
Sign-up for Free Subscription
'India Construction Week'
Weekly e-Newsletter on Construction Industry
Get the latest news, product launches, projects announced / awarded, government policies, investments, and expert views.