| 自锚式悬索桥纵向地震响应控制分析 |
| Analysis of Longitudinal Seismic Reaction Control for Self anchored Suspension Bridge |
| 投稿时间：2013-10-28 |
| 中文关键词:自锚式悬索桥 黏滞阻尼器 减震 |
| 英文关键词:self anchored suspension bridge viscous damper dissipation |
| 基金项目:973计划（2013CB036302） |
|
| 摘要点击次数: 1268 |
| 全文下载次数: 1114 |
| 中文摘要: |
| 以某双塔自锚式悬索桥为例，通过在桥塔与主梁之间设置液体黏滞阻尼器，把地震作用下桥梁纵向的位移和内力控制在一个合理的范围内。通过改变阻尼参数C和α，对此桥纵向的地震位移和内力的变化情况进行了规律总结。比较发现，当阻尼系数C越大或阻尼指数α越小时，此桥纵向的地震位移和内力反应就越小。其中C取3 500左右，α取0.3时，塔底地震弯矩降幅达40%左右，主梁地震位移降幅达50%左右。 |
| 英文摘要: |
| This paper takes a self anchored suspension bridge with two pylons for example. Fluid viscous dampers which are installed between pylon and beam are introduced to balance the displacements and forces under earthquake in a reasonable range. The variation trend of the seismic displacements and forces are summarized by changing dampers’ parameters C and α.By contrast, it is found that with bigger damper coefficient or smaller damper exponent, smaller bridge seismic displacements and forces are observed. When takes around 3 500 and takes 0.3, the seismic moments of pylon’s bottom decrease about 40% and the seismic displacements of beam decrease about 50%. |
| 荀浩,周卫滨,李建中.自锚式悬索桥纵向地震响应控制分析[J].石家庄铁道大学学报：自然科学版,2014,(2):1-5. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
| 关闭 |