Modelling and analysis of Suspension Bridge a...

Modelling and analysis of Suspension Bridge as per IRC in Midas Civil

Author Name : Shreyas B. Alkute, Sandeep L. Hake

ABSTRACT

The suspension bridge is type of the bridge in which the deck girder is below the suspension cables on vertical hanger. The elements of a suspension bridge consist girders, the main cables, pylon, and the anchorages for the cables. The main cables are hanging between pylons and connected to the anchorage or the bridge deck, and vertical hangers carry the load of the deck as well as traffic load on it. The main load carried by the main cables, which are tension element casted by using high-strength steel wire. The cable system is main element of the bridge. Bridges are normally designed for D.L, L.L and other Moving loads. All loading cases in the analysis and design are as per IRC 6-2017 code specifications. The total modelling of the suspension parts of the bridge was done per IRC 112-2020 by using MIDAS CIVIL.

Suspension cable bridge having 1000 m span with six lane road, the intensity of vehicle moving load as per IRC 6-2017 (heavy loading class 70R and class A wheel load) is analyze by MIDAS CIVIL . The result of analysis includes moments, axial loads, shear force and displacements. Moments and load at each point within the element can be easily observed from the software output results.

Key Words: Analysis, Force, Midas Civil, Moment,Modelling, IRC 112-2020, IRC 6-2017.