COMPARISON OF DIFFERENT TYPES OF TRUSSES IN VIBRATION ANALYSIS USING STAAD PRO

This work presents vibration analysis of steel truss bridge under moving loads by using STAAD Pro Software. The proposed bridge is pratt, warren, howe andK type. The bridge length is 250ft. The considered loadings on bridge are dead loads, live loads, wind load, seismic effect and temperature effect.Design calculation of structural steel members are considered according to the design criteria of AISC-ASD Specifications. Deflection checking is carried out in order to ensure that the structure is safe under the various loads. In the vibration analysis, moving loads are considered as harmonic loading and then, vibration effect is analysed. Finally discussions and conclusions are made for this vibration analysis