Response Spectrum Analysis of Suspension Cable Bridge and Tied Arch Bridge

Abstract

Abstract—Bridges are recognition of a nation’s infrastructure. Bridges play an important role in connecting people, good and transports. A bridge’s close down can halt economic progress of any nation. Services those are no longer available can be simply completed with the help of bridges. Most advanced technology that are used for bridge design and construction are Building Information Modelling (BIM), Prefabrication and computer aided AI-based system. Various new construction materials are also being used as a replacement for traditional materials. A Tied-arch bridge is an arch bridge in which the outward-directed horizontal forces of the arch are borne as tension by a chord tying the arch ends, rather than by the ground or the bridge foundations. A Suspension bridge is a type of bridge in which deck is hung below suspension cables on vertical suspenders. Suspension Bridge consists of main span, side span, main cables, hanger ropes, pylons and deck. Tied arch bridge is type of bridge in which deck is below the arch and vertical suspender ropes. A tied-arch bridge is an arch bridge in which the outward horizontal forces of the arch caused by tension at the arch ends to a foundation are countered by equal tension of its own gravity plus any element of the total deck structure such great arch support. The arch have strengthened chord that run to a strong part of the deck structure or to independent tie-rods below the arch ends. This research presents the Response Spectrum analysis of Suspension Bridge and Tied-arch Bridge. The modelling is done using SAP 2000. Response Spectrum analysis is done and the deformation of both the bridges under dead load live load and earthquake load is studied. Axial force, Shear force Moment and Torsion values are observed and studied. Along with earthquake load vehicle load is also applied. According to IRC 006, vehicle loading of class 70R wheeled is applied. Keywords—Suspension Cable Bridge, Tied Arch Bridge, SAP 2000, Response Spectrum Analysis