Research Related Issues Curved Beam Bridge Overturning

Affected by the curvature of the plane, curved beam bridge arc length is greater than the inner side of the outer arc-arc side of the arc, and its center of gravity volume cross-shaped mandrel, and by bending and torsion coupling effects of reverse effect is obvious, the design of its ill-considered will affect the structural safety. In recent years, the overall curved beam bridge overturning accident-prone construction phase, which indicates the presence of inadequate design, one of the curved beam bridge itself characteristic lack of knowledge, on the other hand construction temporary load on curved girder bridge is not enough to consider overturning. Thesis curved girder bridge as the research object, through the different computing model to calculate the bending beam bridge abutment under its own weight against the force of comparing and analyzing the reasons for the differences generated, that curved beam bridge support reaction force calculated accurately computing model, including spatial grid model and solid model space; as a guide, using the solid model spatial analysis of curved beam bridge support in the construction phase of the temporary fence loads loads, different construction vehicles parked position pouring loads of different sequences of Block reaction force variation study these load on curved beam bridge construction stage overturning stability, reasonable load add temporary program to provide a reference for the construction organization; On this basis, compared to a single cross-linking of different numbers of curved beam bridge In overturning stability similar to the bridge load and under load, stability comparison of different sub-inline curved beam bridge between theoretical reference design to select the appropriate sub-way linking.