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Numerical Study on Large Span Pre-Stressed Modified Warren Truss

Swati Agrawal and Maloy K. Singha
Department of Applied Mechanics, Indian Institute of Technology Delhi, New Delhi, India

Abstract—This paper deals with the analysis and design of long-span pre-stressed modified warren trusses under gravity load. An in-house finite element code is developed in MATLAB using the beam element and the trusses are analyzed. The steel trusses are designed using rectangular hollow sections and their linear buckling loads are checked. The advantages of pre-stressing, curvature and additional layers of parallel chord on the member force, vertical deflection, bearing movement and steel consumption of such trusses are studied.

Index Terms—modified warren truss, pre-stressing, up-camber, layers, buckling analysis

Cite: Swati Agrawal and Maloy K. Singha, "Numerical Study on Large Span Pre-Stressed Modified Warren Truss," International Journal of Structural and Civil Engineering Research, Vol. 4, No. 4, pp. 320-325, November 2015. doi: 10.18178/ijscer.4.4.320-325