主跨330 m某高速公路双塔斜拉桥成桥索力确定与稳定性分析

Cable Force Determination and Stability Analysis of a Highway Double-pylon Cable-stayed Bridge with MainSpan of 330 m.

采用Midas/civil有限元软件,对某高速公路主跨330 m双塔斜拉桥进行了计算分析。基于最小弯曲能法确定了该桥合理成桥状态,并根据无应力索长进行了施工过程正装分析,最后,依据现行规范,对该桥进行了应力、挠度、动力特性和稳定性验算,计算结果可为相关研究提供参考。

MIDAS/civil finite element software is used to calculate and analyze a 330-m double-pylon cable-stayed bridge of an expressway.Based on the minimum bending energy method,the reasonable completion state of the bridge is determined.Based on the unstressed cable length,the normal installation analysis of the construction process is carried out.Finally,according to the current specifications,the stress,deflection,dynamic characteristics and stability of the bridge are checked and calculated.The calculation results can provide reference for related studies.