| 吊杆损伤对湛河斜靠式拱桥动力特性的影响 |
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| 引用本文： | 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,2010,26(4). |
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| 作者姓名： | 陈淮 胡锋 李静斌 |
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| 作者单位： | 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 |
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| 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) |
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| 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M IDAS/C ivil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。
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| 关 键 词： | 桥梁工程 斜靠式拱桥 动力特性 吊杆 损伤 |
Influences of damaged suspenders on dynamic properties of the Zhanhe double X-arch bridge |
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| CHEN Huai,HU Feng,LI Jingbin.Influences of damaged suspenders on dynamic properties of the Zhanhe double X-arch bridge[J].World Information On Earthquake Engineering,2010,26(4). |
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| Authors: | CHEN Huai HU Feng LI Jingbin |
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| Institution: | 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) |
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| 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 ... |
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| Keywords: | bridge engineering double X-arch bridge dynamic properties suspender damage |
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