现浇箱梁单梁模型与梁格法模型内力结果的对比分析

 

(西安公路研究院,陕西 西安 710065

  要:以实际工程为背景,针对小半径曲线现浇梁,分别建立以直代曲平面杆系梁单元模型、以直代曲梁格法空间模型以及梁格法曲梁模型,并进行了有限元仿真,对各模型的设计支反力、跨中和支点截面内力等设计主要指标进行了对比分析,得出了有益的结论,可为今后斜弯桥的设计提供参考。

关键词:梁单元;梁格法;有限元;支反力;内力

中图分类号:U442        文献标识码:B

 

Comparative analysis of cast-in-situ box girder of single girder model

and internal force of the beam model

WANG Xu

(Xi'an Highway Research Institute, Xi'an 710065,China)

Abstract: Taking the actual project as the background, in view of the small radius curve of cast-in-place beam, straight lines plane beam element model were established, replacing curve by straight beam space model and beam model of curved beam was analyzed by finite element simulation, force, span and pivot section internal force design of the main indicators of the design model were comparative analyzed. That some useful conclusions were obtained, which can provide a reference for the future design of oblique and curved bridge.

Key words: Beam element; midas civil; finite element; Supporting force; internal force