Civil Engineering and Architecture Vol. 9(4), pp. 969 - 975
DOI: 10.13189/cea.2021.090401
Reprint (PDF) (321Kb)

Analytical Comparison of Composite and Non-Composite through Type and Deck Type Steel Truss Bridges

Abhishek Sharma ^*, Krishankant Pathak , Pramod K. Singh
Department of Civil Engineering, IIT BHU, Varanasi (221005), India

ABSTRACT

In trusses, deck type and through type truss systems are generally provided with various member arrangements. To utilize the materials used in the trusses more efficiently, RCC decks are nowadays made composite with the truss members. In this paper, analysis of 72.0 m deck type and through type, non-composite and composite bridges is presented. The bridges are modelled using STAAD. Pro v8i software with truss members as beam element and deck slab modelled as four noded plate element. The loading on the bridge is done as per the provisions of IRC-6 and IRC-24. The composite deck effectively reduces the horizontal deflections due to lateral seismic and wind loads in both the truss systems. Decrement in vertical deflection of the truss system was also observed making the structure mode stiffer. Stresses in the members made composite with the deck slab were also reduced and hence resulted in material saving and decreased steel offtake. In the case of composite deck type bridges due to load sharing by the deck slab, the stresses in the top chord are reduced significantly hence eliminating the chances of buckling. Advantages of composite deck are better utilized in deck type bridge system compared to through type bridge system.

KEYWORDS
Through Type Bridge, Deck Type Bridge, Composite Bridge, Shear Connector, Bridge Stiffness

Cite This Paper in IEEE or APA Citation Styles
(a). IEEE Format:
[1] Abhishek Sharma , Krishankant Pathak , Pramod K. Singh , "Analytical Comparison of Composite and Non-Composite through Type and Deck Type Steel Truss Bridges," Civil Engineering and Architecture, Vol. 9, No. 4, pp. 969 - 975, 2021. DOI: 10.13189/cea.2021.090401.

(b). APA Format:
Abhishek Sharma , Krishankant Pathak , Pramod K. Singh (2021). Analytical Comparison of Composite and Non-Composite through Type and Deck Type Steel Truss Bridges. Civil Engineering and Architecture, 9(4), 969 - 975. DOI: 10.13189/cea.2021.090401.