Simulation Computation of Arch-Rib Assembling based on Cable Adjustment for Long Span CFST Arch Bridge

摘要

Long-span concrete of filled tubular (CFST) arch bridge is a new type of bridge in china in the last ten years, and its construction process by the manner of arch-rib assembling through cables is very complicated. So the simulative computation of arch-rib assembling must be executed in order that the final arch-rib line can be accorded with the design requirements. In this paper, the construction computation problem of arch rib-assembling for long span CFST arch bridge was discussed in details. And the simulation computation of forecasting rib-assembling was proposed based on simulating the cable adjustment. This approach was presented by simulating a cable's adjustment, which considered the non-linear influence of the cable gravity. Then the calculation frame was also set up through iterative arithmetic. With an instance of application, the paper validated the practicability, and this approach can be set into the whole arch-rib assembling.