[1]王 涛,刘 军,周玉林.拱梁刚度对大跨度铁路梁拱组合桥受力性能的影响[J].湖南城市学院学报(自然科学版),2019,28(5):13-16.[doi:10.3969/j.issn.1672-7304.2019.05.0003]
 WANG Tao,LIU Jun,ZHOU Yulin.Influence of Arch and Beam Stiffness on Mechanical Performance of Long Span Railway Beam-arch Composite Bridge[J].,2019,28(5):13-16.[doi:10.3969/j.issn.1672-7304.2019.05.0003]
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拱梁刚度对大跨度铁路梁拱组合桥受力性能的影响()
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《湖南城市学院学报(自然科学版)》[ISSN:1006-6977/CN:61-1281/TN]

卷:
28
期数:
2019年5期
页码:
13-16
栏目:
土木工程
出版日期:
2019-09-20

文章信息/Info

Title:
Influence of Arch and Beam Stiffness on Mechanical Performance of Long Span Railway Beam-arch Composite Bridge
文章编号:
1672–7304(2019)05–0013–04
作者:
王 涛1刘 军2周玉林1
1. 重庆交通大学 土木工程学院,重庆 400074;2. 中铁十二局集团第七工程有限公司,长沙 410004
Author(s):
WANG Tao1 LIU Jun2 ZHOU Yulin1
1. School of Civil Engineering, Chongqing Jiaotong University, Chongqing 400074, China; 2. The Seventh Engineering Co., Ltd. of China Railway Twelfth Bureau Group, Changsha, Hunan 410004, China
关键词:
梁拱组合桥拱梁刚度结构内力变形动力特性
Keywords:
beam-arch composite bridge arch and beam stiffness structural internal force deformation dynamic characteristics
分类号:
U448
DOI:
10.3969/j.issn.1672-7304.2019.05.0003
文献标志码:
A
摘要:
为了解拱梁刚度对大跨度铁路连续梁拱组合桥受力特性的影响,以徐宿淮盐线某(100+200+100)m连续梁拱组合桥为工程背景,分析拱梁刚度对结构内力、变形、动力特性和吊杆疲劳等方面的影响﹒研究结果表明:拱梁抗弯刚度比主要影响主梁和拱肋中弯矩的分配,对结构轴力影响较小;拱梁刚度比的增大有利于抑制由活载引起的变形;拱梁刚度比的增大导致吊杆应力幅增大,且边吊杆变化最显著﹒
Abstract:
In order to understand the influence of arch beam stiffness on the mechanical behavior of long-span railway continuous beam-arch combination bridge, a (100+200+100) meter continuous beam-arch combination bridge of Xuzhou-Yancheng Intercity Railway is used as the engineering background to analyze the influence of the arch beam stiffness on the structural internal force, the deformation, the dynamic characteristics and the boom fatigue . The results show that the bending stiffness ratio of the arch beam mainly affects the distribution of bending moments in the main beam and arch rib, but has little effect on the structural axial force; the increase of the rigidity ratio of the arch beam is beneficial to restrain the deformation caused by the live load; the increase of the rigidity ratio of the arch beam leads to the increase of the stress amplitude of suspender, and the change of side suspender is the most significant.

备注/Memo

备注/Memo:
收稿日期:2019-03-24 第一作者简介:王涛(1993-),男,重庆渝北人,硕士,主要从事大跨径桥梁设计研究﹒E-mail: 411942528@qq.com
更新日期/Last Update: 2019-10-24