Influence of Impact Factor with Speed of Vehicle Under IRC Class AA and 70R Loading

Hamidullah; Ahmad Zia Ahady; Mohammad Esa Tanha

doi:10.55544/jrasb.3.5.3

Authors

Hamidullah Assistant Professor, Department of Civil Engineering, Paktia University, AFGHANISTAN.
Ahmad Zia Ahady Teaching Assistant, Department of Architecture, Paktia University, AFGHANISTAN.
Mohammad Esa Tanha Professor, Department of Civil Engineering, Nangrahar University, AFGHANISTAN.

DOI:

https://doi.org/10.55544/jrasb.3.5.3

Keywords:

IRC Class AA Loading, IRC Class 70R loading, IF

Abstract

The impact factor is a critical parameter in bridge design, representing the additional dynamic forces that moving vehicles impose on the structure. This paper explores the influence of vehicle speed on the impact factor under two important loading conditions as per the Indian Road Congress (IRC) guidelines: IRC Class AA and 70R loading. Using theoretical approaches and Finite Element Method (FEM) simulations, we analyze how vehicle speed modifies the impact factor, leading to variations in structural response. The results highlight the relationship between vehicle speed, loading class, and impact factor, emphasizing the need for accurate dynamic modeling in bridge design.

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References

Majka M. and Hartnett M.(2008) “Effect of speed,load and damping on dynamic response of highway bridges and vehicles” J. Computers and Structures., 86(2008) 556-572

Sean P., Brady and Eugene J. O’Brien (2006). “Effect of Vehicle Velocity on the Dynamic Amplification of Two Vehicles Crossing a Simply Supported Bridge” J. Bridge Eng. 3.1061/(ASCE)1084-0702(2006)11:2(250).

Schelling, D. R., Galdos, N. H., and Sahin, M. A. (1992). “Evaluation of impact factors for horizontally curved steel box bridges.” J. Struct. Eng., 10.1061/(ASCE)0733-9445(1992)118:11(3203), 3203–3221.

Huang, D. (2001). “Dynamic analysis of steel curved box girder bridges.” J. Bridge Eng., 10.1061/(ASCE)1084-0702(2001)6:6(506), 506–513.

Samaan, M., Kennedy, J. B., and Sennah, K. (2007). “Impact factors for curved continuous composite multiple-box girder bridges.” J. Bridge Eng., 10.1061/(ASCE)1084-0702(2007)12:1(80), 80–88.

Indian Road Congress (IRC) Guidelines, IRC 6-2017: Standard Specifications and Code of Practice for Road Bridges.