IJMTES – STRENGTHENING OF PSC BOX GIRDER BALANCE CANTILEVER BRIDGE BY EXTERNAL PRESTRESSING

Journal Title : International Journal of Modern Trends in Engineering and Science

Paper Title : STRENGTHENING OF PSC BOX GIRDER BALANCE CANTILEVER BRIDGE BY EXTERNAL PRESTRESSING

Author’s Name : Nisarg D Khatri | Dr Chaitanya S Sanghviunnamed

Volume 04 Issue 04 2017

ISSN no :  2348-3121

Page no: 267-272

Abstract – This paper represents strengthening technique of the balanced cantilever bridge which shows excessive deflection. The Prestressed concrete bridge is box girder balanced cantilever with suspended span and 977m long. The bridge is constructed in early 2000 and cantilever tips of bridge shows excessive deflection in 2017. The analytical model of bridge is prepared in Midas civil software package and with the help of time dependent properties creep, shrinkage, relaxation loss, etc. the actual deflection of bridge is achieved. Model is also developed in midas civil which shows that the deflection of bridge is reduced with the help of external prestressing. The design of deviator block and stressing plates for external prestressing is represented in this paper as per Indian standards.

Key Words – balanced cantilever, excessive deflection, strengthening, and external prestressing

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