Analysis Of Combined Continuous Rigid-Frame And Long Span Arch Combination Area Weth Integrated Finite Element Method

The combined continuous rigid-frame and long span arch bridge appear lately in China. For the structure stress condition, the dead load is born mainly by continuous rigid-frame, and the live load is born by both the arch rib and the main beam, the force separately bora by the arch rib and the main beam is influenced by the whole rigidity of beam and arch, and by areas of flexible hanger rod, the structure perforce is no longer same with the common beam and arch, and the inner force analysis progress is more complex to the common bridge system, especially, the multi-direction stress analysis to the combination area of pier, arch and beam is very difficult, for such reasons, so it is very necessary and important to have stress performance analysis in the combination area of pier, arch and beam. This paper is based on the newly Changjiang Rive Main Bridge in Yichang of Yiwang Railway design proposal, and it is according to the construction drawings. Using large finite element computing soft to build finite element model to simulate the combination area of pier, arch and beam. For the structure stress performance of the combination area of pier, arch and beam in side span and the middle span under different load work condition, they are detailed theory analysed and computed. Based on the model test, some theory comparison data is supplied and some suggestion on the design of combination area of pier, arch and bridge is proposed and to be discussed, through these my can master the computing method of the large bridge.