Abstract:Four bridgeheads are set on the east and west banks of Yihe River Bridge in Beijing Road. The structural forms are the frame structure surrounded by four columns, which shares the foundation of base slab pile with the piers of the widened bridge. At the same time of analyzing the earthquake action, the most unfavorable load action of building and bridge design should be considered. Three weak positions of bridge deck position, base slab pile foundation and roof platform are specially analyzed. Firstly, it is introduced that the main structure of bridgehead will not collide with the widened bridge under the earthquake action. And then, it is analyzed that the force of each pile position in the pile group foundation will be changed after the combination of base slab. The impact of pile - soil - structure interaction system will increase the pier load of the widened bridge and the total earthquake load of pile foundation. Finally, the anti-earthquake analysis on the columns and the core tube of the sightseeing hall is carried out, and the measures to avoid the shear lag effect of the roof platform are introduced.
