• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of bridge engineering >Lessons Learned from the Damaged Huilan Interchange in the 2008 Wenchuan Earthquake
【24h】

Lessons Learned from the Damaged Huilan Interchange in the 2008 Wenchuan Earthquake

机译：从2008年汶川地震中受损的汇兰交汇处吸取的教训

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A disastrous earthquake struck Wenchuan in China's Sichuan province in 2008 and caused heavy casualties and structural damage to bridges and buildings. One of the two severely earthquake-damaged curved bridges in China, the Huilan interchange, had been carefully studied, including postearthquake investigation and identification of the cause of failure for this bridge. The Huilan interchange, constructed in 2004 in Mianzhu City, consisted of a viaduct and four horizontally circular ramp bridges with continuous box girders. Field investigations found that the seismic damage to the ramp bridges was especially heavy, one or two short piers in all, but one of the ramp bridges experienced severe failure, and the box girders over the failed piers were fractured. Other piers of the ramp bridges suffered minor-to-moderate damage, including concrete cover spalling, concrete cracking, and slippage damage of the rubber bearings. The viaduct suffered only slight damage, including slippage damage of the rubber bearings and pounding damage of the superstructure. The seismic performance of the bridge was evaluated by finite-element modeling and compared with field observations. It was found that the bearing on top of the shortest pier, Pier 1, was damaged first. Then, the seismic action was concentrated on the next shortest pier, Pier 2, which had the largest flexural stiffness. Pier 2 first yielded in flexure, and, as the lateral displacement increased, the ultimate response of this pier was dominated by its shear capacity, and it eventually failed in flexure-shear mode.
机译：2008年，中国四川汶川发生了特大地震，造成重大人员伤亡，桥梁和建筑物遭到结构性破坏。惠兰立交桥是中国两座严重地震破坏的弯桥之一，已经进行了认真的研究，包括地震后调查和查明该桥的失效原因。惠兰立交桥于2004年在绵竹市建成，由一个高架桥和四个水平的圆形斜坡桥组成，这些桥具有连续的箱梁。现场调查发现，坡道桥的地震破坏特别严重，总共有一两个短墩，但其中一处坡桥发生了严重的破坏，失效墩上的箱形梁断裂。斜桥的其他墩遭受了轻微到中度的损坏，包括混凝土覆盖层剥落，混凝土开裂和橡胶轴承的滑移损坏。高架桥仅受到轻微损坏，包括橡胶轴承的滑移损坏和上部结构的撞击损坏。通过有限元建模评估了桥梁的抗震性能，并与现场观测结果进行了比较。发现最短的码头（1号码头）顶部的轴承首先损坏。然后，地震作用集中在第二个最短的桥墩上，桥墩2的抗弯刚度最大。 2号墩首先屈曲，随着横向位移的增加，该墩的最终响应受其剪切能力的支配，最终在挠剪模式下失效。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号