[1]陈淮,胡锋,李静斌.吊杆损伤对湛河斜靠式拱桥动力特性的影响[J].世界地震工程,2010,(04):001-5.
 CHEN Huai,HU Feng,LI Jingbin.Influences of damaged suspenders on dynamic properties of the Zhanhe double X-arch bridge[J].,2010,(04):001-5.
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吊杆损伤对湛河斜靠式拱桥动力特性的影响
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《世界地震工程》[ISSN:/CN:]

卷:
期数:
2010年04期
页码:
001-5
栏目:
出版日期:
2010-04-01

文章信息/Info

Title:
Influences of damaged suspenders on dynamic properties of the Zhanhe double X-arch bridge
作者:
陈淮1 胡锋2 李静斌1
1. 郑州大学土木工程学院, 河南 郑州 450001;
2. 河南省交通科学技术研究院有限公司, 河南 郑州 450006
Author(s):
CHEN Huai1 HU Feng2 LI Jingbin1
1. School of Civil Engineering, Zhengzhou University, Zhengzhou 450001, China;
2. Henan Transportation Research Institute CO. LTD, Zhengzhou 450006, China
关键词:
桥梁工程斜靠式拱桥动力特性吊杆损伤
Keywords:
bridge engineeringdouble X-arch bridgedynamic propertiessuspenderdamage
分类号:
U448.22+5;P315.96
摘要:
根据平顶山市城东河路湛河桥主桥—斜靠式拱桥的结构特点,采用MIDAS/Civil有限元软件,建立了该桥的空间有限元计算模型,进行了不同吊杆损伤情况下的桥梁动力特性计算,通过对比桥梁在完好状态和不同吊杆损伤情况下的桥梁动力特性,得出结论:吊杆损伤对斜靠式拱桥的低阶自振频率总体影响较小,但对桥梁整体竖向自振频率和扭转自振频率相对影响较大,吊杆损伤导致桥梁竖向和扭转自振频率降低;主拱吊杆损伤比稳定拱吊杆损伤对该桥的自振频率影响大,跨中吊杆损伤比1/4跨处吊杆损伤对该桥自振频率影响大.计算结果对正确认识斜靠式拱桥在不同状态下的结构动力特征,合理评价桥梁运营阶段的健康状况提供了参考和基础性数据.
Abstract:
According to the structural characteristics of the main bridge of Zhanhe bridge-a double X-arch bridge across the Chengdong River in Pingdingshan City,the bridge’s spatial finite element model is built by the software MIDAS/Civil.The bridge’s dynamic properties under different damaged suspenders have been calculated.By comparing the bridge’s dynamic properties in health state and with that in damaged suspender state,it can be concluded:The damaged suspenders have little influence on the bridge’s low order natural frequencies totally,but have large influence on the bridge’s vertical and torsional frequencies.So the suspender damage causes the X-arch bridge’s vertical and torsional frequencies reduced.The main arch suspender damage has more influence on bridge’s natural frequencies than the stable arch suspender damage,and the mid-span suspender damage has more influence than the one-quarter span suspender damage.These results provide a reference and basic data for understanding correctly the structural dynamic properties of double X-arch bridge in different suspender damage states and for reasonably evaluating its health status in operational phase.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2010-8-8;改回日期:2010-10-27。
基金项目:国家自然科学基金项目(50748028);河南省杰出人才计划项目(084200510003)
作者简介:陈淮(1962- ),男,教授,博士生导师,主要从事桥梁结构分析和工程结构抗震研究.E-mali:chen0418@126.com
更新日期/Last Update: 1900-01-01