| 城市高架桥抗震性能水准的量化 |
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| 引用本文： | 刘艳辉,赵世春,强士中.城市高架桥抗震性能水准的量化[J].西南交通大学学报,2010,45(1). |
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| 作者姓名： | 刘艳辉 赵世春 强士中 |
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| 作者单位： | 西南交通大学土木工程学院,四川,成都,610031 |
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| 摘 要： | 为实现城市高架桥基于性能的抗震设计,以常规城市高架桥为研究对象,在性能水准(划分为完好、基本完好、轻微破坏、中等破坏和严重破坏)和性能指标(用桥墩顶点的位移延性系数表示破损指标)已经确定的前提下,着重讨论了性能水准的量化过程.具体步骤为:提出各性能水准与桥墩塑性铰区混凝土压应变和钢筋拉应变限值的对应关系;建立各性能水准与桥墩顶点位移和位移延性系数的关系;建立各性能水准与破损指标的量化关系.与已有研究的比较表明,所提出的性能指标合理.
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| 关 键 词： | 性能水准 量化 混凝土压应变 钢筋拉应变 位移延性系数 破损指标 |
Quantification of Seismic Performance Levels for Urban Viaduct |
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| LIU Yanhui,ZHAO Shichun,QIANG Shizhong.Quantification of Seismic Performance Levels for Urban Viaduct[J].Journal of Southwest Jiaotong University,2010,45(1). |
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| Authors: | LIU Yanhui ZHAO Shichun QIANG Shizhong |
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| Institution: | LIU Yanhui,ZHAO Shichun,QIANG Shizhong(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | By taking a urban viaduct as the research object and on the premise of the determinations of performance levels(integrity,almost integrity,slight damage,moderate damage and serious damage) and performance indexes(damage index expressed by the displacement ductility coefficient of bridge pier top),the quantitative process of performance levels was emphatically discussed to realize the performance-based seismic design of urban viaducts.Its concrete steps are to propose the corresponding relationship between e... |
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| Keywords: | performance level quantification concrete compression strain steel tension strain displacement ductility coefficient damage index |
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