以在建特大型桥(132+230+132m)为工程背景,首先对粱体和墩部进行了合理的简化,应用有限元软件ANSYS建立分析模型。其次根据设计值进行预应力成桥分析,通过改变某些参数研究此大桥的静力成桥状态。从而提出,在特大型桥的结构设计中可以通过优化某些参数,避开危险带,减小对桥梁结构的破坏性。 Taking the large bridge (132 + 230 + 132m) as the engineering background, the body and the pier of the beam are reasonably simplified. The finite element software ANSYS is used to establish the analysis model. Secondly, according to the design value of prestressed bridge analysis, by changing some parameters to study the bridge into the static state of the bridge. Therefore, it is suggested that certain parameters can be optimized to avoid the danger zone and reduce the destructiveness of the bridge structure in the structural design of extra large bridges.