|本期目录/Table of Contents|

[1]崔晓晓,刘永健,封博文,等.中小跨径简支钢板组合梁桥荷载横向分布研究[J].建筑科学与工程学报,2024,41(05):142-153.[doi:10.19815/j.jace.2022.09117]
　CUI Xiaoxiao,LIU Yongjian,FENG Bowen,et al.Study on load lateral distribution of simply supported steel plate composite girder bridge with small and medium span[J].Journal of Architecture and Civil Engineering,2024,41(05):142-153.[doi:10.19815/j.jace.2022.09117]
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中小跨径简支钢板组合梁桥荷载横向分布研究(PDF)
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
41卷
期数:
2024年05期
页码:
142-153
栏目:
桥隧工程
出版日期:
2024-09-20

文章信息/Info

Title:
Study on load lateral distribution of simply supported steel plate composite girder bridge with small and medium span
文章编号:
1673-2049(2024)05-0142-12
作者:
崔晓晓1,刘永健1,2,封博文1,张泽军3
(1. 长安大学 公路学院,陕西 西安 710064; 2. 长安大学 公路大型结构安全教育部工程研究中心,陕西 西安 710064; 3. 山东高速集团有限公司创新研究院,山东 济南 250101)
Author(s):
CUI Xiaoxiao1, LIU Yongjian1,2, FENG Bowen1, ZHANG Zejun3
(1. School of Highway, Chang'an University, Xi'an 710064, Shaanxi, China; 2. Research Center of Highway Large Structure Engineering on Safety of Ministry of Education, Chang'an University, Xi'an 710064, Shaanxi, China; 3. Shandong Hi-Speed Group Innovation Research Institute, Jinan 250101, Shandong, China)
关键词:
桥梁工程;  钢板组合梁桥;  荷载横向分布;  有限元分析;  多梁式结构;  中小跨径桥梁
Keywords:
bridge engineering;  steel plate composite girder bridge;  lateral load distribution;  finite element analysis;  multi-girder structure;  small and medium span bridge
分类号:
TU398.9
DOI:
10.19815/j.jace.2022.09117
文献标志码:
A
摘要:
为评价经典荷载横向分布计算方法对中小跨径简支钢板组合梁桥的适用性,首先利用实桥荷载试验结果,验证了基于ABAQUS软件的三维有限元模拟方法; 然后以计算跨径、主梁数量、主梁间距为研究参数,设计了108个分析模型,分别采用修正的刚性横梁法、刚接梁法、G-M法以及有限元法计算荷载横向分布影响线,进而得到单车道和多车道作用下各主梁的荷载横向分布系数; 最后基于线性相关系数、横向分布影响线吻合程度指标及横向分布系数相对误差,进行横向分布线性判断及各理论计算方法的误差分析。结果表明:当钢板组合梁桥宽跨比B/L小于0.34时,各主梁在荷载作用下挠曲呈直线变形,即认为钢板组合梁桥B/L<0.34时为窄桥; 利用理论计算方法计算横向分布系数时,单车道布载下,当B/L<0.2,宜采用修正刚性横梁法、刚接梁法、G-M法,当0.2<B/L<0.3,宜采用刚接梁法、G-M法,当0.3<B/L<0.75,宜采用G-M法; 多车道布载下,当B/L<0.3,宜采用修正刚性横梁法、刚接梁法、G-M法,当0.3<B/L<0.45,宜采用刚接梁法、G-M法,当0.45<B/L<0.75,宜采用G-M法; 提出了修正的刚性横梁法、刚接梁法、G-M法计算精度判定条件,控制理论计算结果与有限元计算结果相对误差在10%以内; 研究成果可为中小跨径钢板组合梁桥的荷载横向分布计算方法选取提供依据。
Abstract:
In order to evaluate the applicability of the classical load lateral distribution calculation methods for simply supported steel plate composite girder bridges with small and medium span, firstly, a three-dimensional finite element simulation method based on ABAQUS was verified by the results of bridge load tests. Then, 108 analytical models were designed with different spans, number of main girders and spacing of main girders,and modified rigid transverse beam method, rigid-joint beam method, G-M method and finite element method were used to calculate the load lateral distribution influence lines, and then load lateral distribution coefficient of each main girder under single-lane and multi-lane were obtained respectively. Finally, based on the linear correlation coefficient, the degree of coincidence of the lateral distribution influence line and the relative error of the lateral distribution coefficient, the lateral distribution linear judgment and error analysis was carried out. The results show that when the aspect ratio of steel plate composite girder bridge B/L is less than 0.34, it is considered that the main girder deflects in a straight line under load, that is, the steel plate composite girder bridgewith B/L less than 0.34 can be considered as narrow bridge. When calculating the lateral distribution coefficients using the theoretical calculation method, for single-lane load, when B/L<0.2, it is appropriate to use modified rigid transverse beam method, rigid-joint beam method and G-M method. When 0.2<B/L<0.3, it is appropriate to use rigid-joint beam method and G-M method. When 0.3<B/L<0.75, it is appropriate to use G-M method. For multi-lane load, when B/L<0.3, it is appropriate to use modified rigid transverse beam method, rigid-joint beam method and G-M method. When 0.3<B/L<0.45, it is appropriate to use rigid-joint beam method and G-M method. When 0.45<B/L<0.75, it is appropriate to use G-M method. The criteria for determining the calculation accuracy of modified rigid transverse beam method, rigid-jointed beam method and G-M method are proposed, and the relative error of result between the theoretical calculation and the finite element calculation is controlled within 10%. The research results can provide a basis for the selection of load lateral distribution calculation methods for steel plate composite girder bridges with small and medium span.

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备注/Memo

备注/Memo:
收稿日期:2023-09-11
基金项目:中央高校基本科研业务费专项资金项目(300102219310); 陕西省交通运输厅科研项目(17-14K)
通信作者:刘永健(1966-),男,工学博士,教授,博士生导师,E-mail:liuyongjian@chd.edu.cn。
更新日期/Last Update: 2024-09-30