...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Tunnelling and underground space technology >Damage analysis of the new Sanyi railway tunnel in the 1999 Chi-Chi earthquake: Necessity of second lining reinforcement
【24h】

Damage analysis of the new Sanyi railway tunnel in the 1999 Chi-Chi earthquake: Necessity of second lining reinforcement

机译：1999年集集地震中新三一铁路隧道的破坏分析：第二层衬砌加固的必要性

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

This study documented the case history of the new Sanyi railway tunnel. The New Austrian tunneling method (NATM)-built mountainous tunnel was seriously damaged during the 1999 Chi-Chi earthquake. In order to better understand the vulnerability and the deformation of the underground structure subject to strong ground motion, the modified cross-section racking deformation (MCSRD) method was used to evaluate the seismic performance of the tunnel. The analyses carefully took the nonlinear soil-structure interaction into account in order to derive damage pattern of the tunnel. Based on the analysis results, in addition to the extremely strong ground motion, numerical testing identified the causes of the disaster to include rectangle-like geometry at the refuge section, non-reinforcement of the second lining, and imperfect backfilling. The results also showed that the second lining of the NATM-built tunnel sustained substantial seismic loading and should be suitably reinforced in seismically active areas. The effect of the reinforcement of the second lining was demonstrated with a reinforcement example.
机译：这项研究记录了新三义铁路隧道的案例历史。在1999年的Chi-Chi地震中，由新奥地利隧道（NATM）建造的山区隧道遭到了严重破坏。为了更好地理解承受强烈地面运动的地下结构的脆弱性和变形，采用了改进的截面齿条变形（MCSRD）方法来评估隧道的抗震性能。分析中仔细考虑了非线性土-结构相互作用，以得出隧道的破坏模式。根据分析结果，除了极强的地面运动外，数值测试还确定了造成灾难的原因，其中包括避难所部分的矩形几何形状，第二层衬砌没有加固以及回填不完善。结果还表明，NATM建造的隧道的第二层衬砌承受了相当大的地震荷载，应在地震活跃地区适当加固。通过加强例来说明第二衬里的加强效果。

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