Extradosed cable-stayed bridge is a hybrid structure, whose mechanic characteristic lies between continuous beam bridge and cable-stayed bridge. Based on an extradosed cable-stayed curved bridge with corrugated steel webs in Tianjin, this paper established the finite element model of the whole bridge construction stages by Midas Civil and focused on the effects of cable force on the structure. Five gradients of cable force were set for structural calculation and analysis. The results show that the influence of cable force variation on the alignment and section stress of the main beam can be approximately regarded as a linear relationship, and the sensitivity of different positions to the variation of cable force is different.
The continuous rigid frame bridge with corrugated steel webs with longitudinal horizontal partitions has been applied in bridge engineering. Taking PC composite box girder continuous rigid frame bridge with corrugated steel webs as the research object, the simulation model was established by using the finite element software Midas Civil to better improve the seismic performance of the corrugated steel webs continuous rigid frame bridge. Through a lot of calculation and analysis, the parameters such as axial force, bending moment and split fraction of the pier under different action all meet the requirements of the code. According to the advantages and mechanical characteristics of continuous rigid frame bridge with corrugated steel webs with longitudinal horizontal partitions, this new composite structure can be popularized and applied in bridge engineering.
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