Proposed Arch Bridge on Lower Lake of Bhopal : A Case Study

In this paper the dynamic characteristic of steel tube (ST) arch bridge is studied. The finite element analysis software is 2000 is used to set up a three-dimensional finite element model of the ST arch bridge. The natural period and mode shapes of the ST arch bridge are calculated by using the complete quadratic coefficient (COC) method. The bridge is analyzed for the road bridge. The response spectrum analysis method is used as per IRC. The calculating result shows that the vertical stiffness of the arch bridge is stronger whereas the arch bridge lateral stiffness is comparably weaker in earthquake. The solution of this problem is to increase lateral stiffness of arch bridge by using alternative arrangement of cross cables.