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Analysis of Axle Loadings and Determination of vehicle Damage Factor and Design of Overlay for Outer Ring Road in Bangalore , Karnataka


Sunil Kumar R , Govt. Srikrishnarajendra Silver Jubilee Technological Institute; Sri. Manjunatha.S, Govt. S.K.S.J.T.I; Dr.B.V.Kiran Kumar, Govt. S.K.S.J.T.I; Sri. P. Praveen Kumar, Govt. S.K.S.J.T.I


Vehicle Damage factor, Axle Load Survey, Equivalence factor, Win flex, over loaded vehicles, Overlay


Over loading by commercial trucks in India is a serious problem. The over loaded trucks stress the road structure beyond safe bearing capacity. Traffic load is dominant function on pavement design because the main function of pavement is to resist traffic load. Efforts to repair of the road damages have been done, but almost meaningless since the overloading trucks keep in progress, even reached twofold from the normal load. In this work vehicle damage factors (VDF) is determined for single, dual, or multiaxle trucks. Average equivalent axle factors per vehicle. It can be seen that an average vehicle on the road adopted as case study, possesses an average equivalent factor of 3.0 which is about three times the standard axle weight for road pavements. This implies that an average truck on this road, used as case study causes the same pavement damage as three standard axles would cause. It shows that, there is high degree of overloading on the said road which is one of the major causes of pavement deterioration .The required overlay thickness has been calculated using WINFLEX 2000 software. The result analysis shows that the maximum axle loads were carried 3-axle trucks they carry the maximum average rear1axle load upto 10.45 tonnes and 10.16 tonnes on rear2 axle .So we need to prevent the trucks which were carrying wheel load more than 10 tonnes, otherwise they need an overlay thickness of 152mm. Overlay thickness for gross average loads of overall truck was 152 mm. From economical point of view providing 152mm thickness is not feasible, so as much as possible over loaded vehicles should be avoided on this road. From the results we have concluded that, enforced the 2-axle and 3-axle trucks which were carrying bulk manufactures, mining and quarrying.

Other Details

Paper ID: IJSRDV2I9435
Published in: Volume : 2, Issue : 9
Publication Date: 01/12/2014
Page(s): 709-712

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