Simulation Calculation Of The Oblique-pulling Truss Bridge

Prestressed concrete oblique-pulling truss bridge is a relatively novel structure, which includes the advantages of both cable-stayed bridge and truss bridge. Based on Kaziwan Bridge and combined with structural simulation analysis technology, the simulation analysis of this type of bridge is studied in detail.The mechanics characteristics of the oblique-pulling truss bridge are detailedly analyzed. Because there exists rigid zones in the nodes in the nodes of oblique-pulling truss bridge, two models are presented, one model takes the nodal rigid zones into consideration and the other does not. By the comparison between the two calculation results, The effect rules of elevation and internal force during both the construction stage and the post construction stage that caused by the nodal rigid zones are obtained; According to the construction process of cantilevered assembly, all of the parameters that influence the deflection of the bridge are studied. And the effect rules and the sensitivity of all the parameters are obtained; For the crunodes of the oblique-pulling truss bridge are prone to crack, a three dimensions model of the crunodes is established. Using large-scale finite element analysis software, ANSYS, the stress distribution of the crunodes is obtained. Finally the basic dynamic performance of the oblique-pulling truss bridge is presented. All the results of simulation are valuable to the design, construction, monitor and control of the similar bridges.