| 韩 彰,韩振峰.千米级斜拉桥的横向减震体系研究[J].安徽建筑大学学报,2016,24(6):1-7 |
| 千米级斜拉桥的横向减震体系研究 |
| Research on the lateral earthquake-reduction system of kilometer-scale cable-stayed bridge |
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| DOI：10.11921/j.issn.2095-8382.20160601 |
| 中文关键词: 斜拉桥 横向 减震 FPI 支座 液体粘滞阻尼器 |
| 英文关键词: cable-stayed bridge lateral earthquake reduction FPI bearing liquid viscous damper |
| 基金项目:安徽省高校自然科学研究重点项目（KJ2015A249）。 |
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| 中文摘要: |
| 为了确定千米级斜拉桥合理的横向减震体系，首先建立了千米级斜拉桥有限元模型，对其进行了横桥向的地震易损性分析，得到了横向地震易损性部位；然后在边墩、梁之间分别采用：滑动摩擦型支座，滑动摩擦型支座 + 液体粘滞阻尼器，FPI(Friction Pendulum Isolation) 支座 + 液体粘滞阻尼器的三种方式建立了三种横向减震体系；其次分别对上述三种横向减震体系，进行了非线性动力时程分析，并且研究了横向减震参数的设置；最后进行了数据的分析，提出横向减震体系的设计要求，液体粘滞阻尼器设置的正确位置，并建议选用千米级斜拉桥的最合理的横向防震体系和分析方法。 |
| 英文摘要: |
| In order to establish the lateral earthquake-reduction system of the long span cable stayed bridges (CSBs) over one kilometer, firstly a finite element model of CSBs longer than 1 km is set, on which the lateral seismic vulnerability analysis are performed, and the lateral seismic vulnerability parts of the bridge are obtained. Secondly,the sliding bearing,the sliding bearing + liquid viscous damper, and the friction pendulum isolation +liquid viscous damper,have been applied,between the side pier and beam to achiere, three lateral earthquake-reduction systems.Then several nonlinear time history analyses on the above three lateral earthquake-reduction systems are conducted and the parameters of lateral earthquake-reduction have been determined.Last, the compute results of the model are discussed and compared and the rational lateral earthquake-reduction system and the analysing methods of CSBs longer than 1km are recommended. |
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