连续变宽箱形桥梁计算精度研究  

The Accuracy of Calculation in Continuous Widened Box Girder Bridge

作　　者：高扬[1] 

机构地区：[1]同济大学,上海200092

出　　处：《佳木斯大学学报（自然科学版）》2015年第3期345-348,共4页Journal of Jiamusi University：Natural Science Edition

摘　　要：随着城市的快速发展,为了满足地形和交通等功能常出现连续变宽箱形桥梁,其梁式桥梁力学特性不在明确.在工程设计中,对这种变宽桥梁的单梁模型的精度分析的成果不多,也较少探讨单梁模型在考虑一定富裕量后能否用于初步设计.本文以某连续变宽箱形桥梁为例,分别建立单梁模型和梁格模型,先对比两种模型在差别和精度,同时验证了单梁模型在考虑一定富裕度后,可以将变宽箱梁纵向简化为单梁模型来计算,并希望能为类似工程设计提供参考.With the rapid development of the city, the continuous widened box girder bridge appears to meet the terrain and transportation functions.The results of accuracy which single beam model was calculated continuous widened box girder bridge were not much in engineering design.Even it hardly considered affluence whether single beam model was used in preliminary design stage.A single beam model and a grillage model for a continuous widened box girder bridge were established in this paper.There was a comparison of difference and affluence between these two models.Then, the single beam model with consideration of affluence verified that longitudinal box girder bridge can be simplified to single beam model to calculate.According to the results of comparison, the paper wishes to provide a reference for similar engineering design.

关 键 词：高架桥 变宽箱梁 精度 富裕量 工程设计 

分 类 号：U441[建筑科学—桥梁与隧道工程]