桥面系结构形式对中下承式拱桥吊杆受力的影晌

doi:10.3969/j.issn.1674-0696.2013.06.11

重庆交通大学学报（自然科学版） ›› 2013, Vol. 32 ›› Issue (6): 1144-1147.DOI: 10.3969/j.issn.1674-0696.2013.06.11

桥面系结构形式对中下承式拱桥吊杆受力的影晌

符祥舟¹,何发礼², 朱东生¹

1.重庆交通大学士木建筑学院，重庆 400074 ;2.成都城投基础设施建设投资有限公司，四川成都 610015

收稿日期:2012-09-19 修回日期:2013-07-04 出版日期:2013-12-15 发布日期:2015-01-22
作者简介:符样舟(1987—)，男，重庆人，硕士研究生，主要从事桥梁抗震及结构分析方丽的研究。E-mail:fuxiangzhou2007@hotmail.com

Influence of Bridge Deck System Structure Form on Suspender Stress of Half-Through or Through Bridge

Fu Xiangzhou ¹, He Fali² , Zhu Dongsheng¹

1.School of Civil Engineering & Architecture , Chongqing Jiaotong University , Chongqing 400074 , China; 2.Chengdu CCIMG Infrastructure Construction Investment Co.Ltd., Chengdu 610015 , Sichuan , China

Received:2012-09-19 Revised:2013-07-04 Online:2013-12-15 Published:2015-01-22

摘要/Abstract

摘要： 分析吊杆断裂的中F承式拱桥，发现其桥面系均为漂浮体系;运用数值模拟，分析桥面系结构形式对吊杆受力的影响;基于简单车辆'模型，讨论车速对吊杆受力的影响。结果表明:桥面系结构形式对吊杆活载受力影响较大;漂浮式桥面系虽然具有施工简便的优点，但其整体性差，存在先天缺陷，对吊杆受力不利，易引起吊杆疲劳破坏，是导致中下承式拱桥吊杆断裂的主要原因。

关键词: 桥面系, 中下承式拱桥, 吊杆受力

Abstract: Half-through or through arch bridges , whose suspenders ruptured , were analyzed , and it was discovered that bridge deck structure of half-through or through bridge were both f1oating systems. Numerical simulation was used to analyze the inf1uence of the bridge deck system stmcture form on suspenders stress. Through a simple model of the vehicle , the inf1uence of the vehicle speed on suspender stress was discussed. The results show that half-through or through arch bridge deck structure form has a huge inf1uence on the suspender stress under live load; secondly , floating bridge deck system has the advantage of simple construction , but it has the birth disadvantage on its poor integration , which is unfavorable to suspender stress and prone to suspender fatigue failure. Finally , fatigue failure is the main cause of the half-through or through arch bridge suspenders' fracture.

Key words: bridge deck structure, half-through or through bridge, suspender stress

中图分类号:

U488.22

符祥舟,何发礼, 朱东生. 桥面系结构形式对中下承式拱桥吊杆受力的影晌[J]. 重庆交通大学学报（自然科学版）, 2013, 32(6): 1144-1147.

Fu Xiangzhou , He Fali , Zhu Dongsheng. Influence of Bridge Deck System Structure Form on Suspender Stress of Half-Through or Through Bridge[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(6): 1144-1147.

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桥面系结构形式对中下承式拱桥吊杆受力的影晌

Influence of Bridge Deck System Structure Form on Suspender Stress of Half-Through or Through Bridge

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