Ｒeasonable Calculation Model of Irregular Box Girder Concrete Bridge

doi:10.3969 /j.issn.1674-0696.2013.05.03

Journal of Chongqing Jiaotong University(Natural Science) ›› 2013, Vol. 32 ›› Issue (5): 911-914.DOI: 10.3969 /j.issn.1674-0696.2013.05.03

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Ｒeasonable Calculation Model of Irregular Box Girder Concrete Bridge

Tao Nengqian¹，Ye Yanxia²

1. Chongqing Architectural Design Institute，Chongqing 400005，China; 2. Yichun Highway Survey ＆ Design Institute，Yichun 336000，Jiangxi，China

Received:2012-04-15 Revised:2013-04-16 Online:2013-10-15 Published:2014-10-27

异型混凝土箱梁桥合理计算模式研究

陶能迁¹，叶岩下²

1. 重庆市设计院，重庆400005; 2. 宜春公路勘察设计院，江西宜春336000

作者简介:陶能迁( 1980—) ，男，湖北麻城人，工程师，硕士，主要从事市政桥梁设计工作。E-mail: 52237072@ qq． com。

Abstract

Abstract: Irregular box girder has a complex structure in the city overpass，which has significantly spatial responses and bending and torsion coupling characteristics． Under the interaction of live loads，the transverse stress of bearings will be uneven， even overload and escapes． Combining with a case study of a certain project with irregular box girder，two and threedimensional finite element model methods were used to analyze the behaviors subjected to traffic load． Analysis and load test results were compared and discussed under local and national specifications． Finally，the reasonable calculation model of the concrete bridge with irregular box girder was deeply discussed．

Key words: irregular box girder, space effect, loading test, reasonable calculation model

摘要： 城市立交中异形箱梁结构复杂，空间效应显著，具有弯梁桥弯扭耦合的特征，因活载作用的相互影响，会造成端部各支座横向受力不均，甚至出现超载和脱空现象。结合某工程采用异形箱梁的实际情况，分别利用平面杆系及空间实体单元进行了分析计算，并与荷载试验结果进行了对比，探讨了此种桥型计算模式的合理性问题。

关键词: 异形箱梁, 空间效应, 荷载试验, 合理计算模式

CLC Number:

U448.28

Tao Nengqian，Ye Yanxia. Ｒeasonable Calculation Model of Irregular Box Girder Concrete Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(5): 911-914.

陶能迁，叶岩下. 异型混凝土箱梁桥合理计算模式研究[J]. 重庆交通大学学报（自然科学版）, 2013, 32(5): 911-914.

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Ｒeasonable Calculation Model of Irregular Box Girder Concrete Bridge

异型混凝土箱梁桥合理计算模式研究

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