31, January 2025

Deflection of the abutment due to the IRC Special Vehicle loading on the approach embankment.

VOLUME-11; ISSUE-1; JAN-2025

Author(s): Vianna De, Maganti Janardhan Yadav

Authors Affiliations:

1 Ph.D Research Scholar, JNTUH, Hyderabad, India

2 Professor of Civil Engineering, JNTUH, Hyderabad, India

DOIs:10.2015/IJIRMF/202501020     |     Paper ID: IJIRMF202501020


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The road network uses flyovers and bridges to transport men and material. The Junction between the pavement and the bridge is failing in many instances causing a Camel-hump, which is a hazard to the drivers and their heavy-laden vehicles. One of the likely reasons could be the displacement and consolidation of soil at the junction due to the constant deflection of the Abutment due to lateral loads of the traffic.  Hence an effort is made to study the deflection of the abutment for the movement of the Special Vehicle over the approach embankments, of various heights while varying the gradients and for different grades of concrete. It has been concluded that as the height of abutment increases the deflection increases irrespective of the grade of concrete used in the design. In case of the abutment of 5m high designed for M25 grade concrete and approach embankment having a gradient of 5%, the significant deflection observed is 5.7 mm while it is 4.5 mm for the same abutment designed for M40 grade of concrete.  As the deflection of the abutment is only due to the lateral load of the Special Vehicle load which is sizeable, the deflection of the abutments would be greater with the combined lateral load of the traffic and soil pressure for a given Highway.     

Bridge Abutment, Special Vehicle, Modulus of Elasticity of concrete, grade of concretes M25, M30, M40. Camel-hump. Slow-moving traffic.

Vianna De, Maganti Janardhan Yadav (2025); Deflection of the abutment due to the IRC Special Vehicle loading on the approach embankment. International Journal for Innovative Research in Multidisciplinary Field, ISSN(O): 2455-0620, Vol-11, Issue-1, Pp.135-139.          Available on –   https://www.ijirmf.com/

Journal Papers:

  1. Brent M. Phares, Adam S. Faris, Lowell Greimann and Dean Bierwagen., (2013) Integral bridge Abutment to Approach Slab Connection. DOI: 10.1061/ (ASCE)BE.1943-5592.0000333. Page 179

 

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  1. Harvey E. Wahls. National Cooperative Highway Research Synthesis of Highway Program Practice 159 Design and Construction of Bridge Approaches; North Carolina State University, Raleigh, North Carolina. (1990) Page 7.
  2. Qiming Chen et al., (2014) Solving the bump Problem. https://www.Roadsidebridges .com /bridge-design/article/10649093/solving-the-bump-problem.

 

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  1. K. Bansal, (2004) Strength of Materials (Pages 640-668) Published by  M/s. Laxmi Publications (P) LTD.

 

Gazette and Codes:

  1. Gazette No. RT 11028/1112017- MVL; S.O. 3467E dated 16th July 2018 issued by the Ministry of Road Transport & Highways; Government of India.
  2. Indian Road Congress; Standard Specifications and Code of Practice for Road Bridges, Section: II. IRC:6-(2017) Pages 21-23
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