| 桥面平整度对大跨度钢管混凝土拱桥车辆振动的影响 |
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| 引用本文： | 严志刚,盛洪飞,陈彦江.桥面平整度对大跨度钢管混凝土拱桥车辆振动的影响[J].中国公路学报,2004,17(4):41-44. |
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| 作者姓名： | 严志刚 盛洪飞 陈彦江 |
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| 作者单位： | 1. 广州市建设投资发展有限公司,广东,广州,510100
2. 哈尔滨工业大学,交通科学与工程学院,黑龙江,哈尔滨,150090 |
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| 基金项目： | 交通部"九五"重点科技攻关项目(95-05-01-19) |
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| 摘 要： | 由路面平整度能量谱密度函数得到桥面平整度不规则形状沿纵向分布函数,分析不同等级桥面平整度对大跨度钢管混凝土拱桥的车辆振动的影响。提出一种车—桥振动简化计算方法,该方法在建立桥的有限元模型时,将车辆的动力性能与桥面平整度对桥梁振动的影响加入到外载荷中,简化了振动分析过程,可用于确定不同等级桥面下的汽车荷载冲击系数取值,为大跨度钢管混凝土拱桥的设计和养护提供参考。
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| 关 键 词： | 桥梁工程 钢管混凝土拱桥 能量谱密度函数 路面平整度 车—桥振动 |
| 文章编号： | 1001-7372(2004)04-0041-04 |
| 修稿时间： | 2003年12月12 |
Effects of bridge deck roughness on vibration of long-span concrete filled steel tube arch bridges due to vehicles |
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| YAN Zhi-gang,SHENG Hong-fei,CHEN Yan-jiang.Effects of bridge deck roughness on vibration of long-span concrete filled steel tube arch bridges due to vehicles[J].China Journal of Highway and Transport,2004,17(4):41-44. |
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| Authors: | YAN Zhi-gang SHENG Hong-fei CHEN Yan-jiang |
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| Institution: | YAN Zhi-gang~1,SHENG Hong-fei~2,CHEN Yan-jiang~2 |
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| Abstract: | The significant effects of random bridge deck roughness under different kinds of road surface conditions on vibration of long-span concrete filled steel tube(CFST) arch bridges due to vehicles are investigated with considering the longitudinal irregularity profile of bridge deck derived from power spectral density(PSD) of road roughness. A new simplified analysis process is presented out for studying vibration of vehicle-bridge system with finite element method,in which the dynamic property and bridge deck roughness are included as the external load so that the impact ratios are educed for CFST arch bridges with different bridge deck surface conditions to be basis for design and maintenance. |
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| Keywords: | bridge engineering CFST arch bridge power spectral density function road surface roughness vibration of vehicle-bridge |
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