Analysis of Longitudinal Seismic Response of Shield Tunnel
-
摘要: 为了探讨盾构隧道的纵向地震响应特性,采用地层-隧道整体三维有限元模型,对武汉长江越江盾构隧道的地震响应进行了分析,主要研究了合理的盾构隧道力学模型、隧道与地层之间的相互作用以及隧道的振动特性.通过隧道与地层的整体分析,得到了盾构隧道位移和应力的分布及其随时间的变化曲线.计算结果表明:压缩波引起的纵向拉、压应力和剪切波引起的扭曲变形是隧道抗震设计的关键.Abstract: In order to investigate the characteristics of longitudinal seismic response of shield tunnels,the seismic response of a shield tunnel across the Yangtze River in Wuhan was investigated with a three-dimensional finite element model for ground-tunnel interaction.The investigation mainly concerns the reasonable mechanics model,the interaction between tunnel and ground,and the vibration characteristics of tunnels.The research obtains the distribution of displacement and stress and their time-dependent curves.The numerical results show that the key points in the aseismatic design of tunnels are the tension and compression stresses in the longitudinal direction of tunnels under a compression wave and the torsional displacement of tunnels under a shear wave.
-
Key words:
- shield tunnel /
- 3-D finite element method /
- seismic response analysis
-
川岛一彦.地下构筑物の耐震设计[M].日本:鹿岛出版会,1994:43-60.[2] 日本土木工程师学会地震工程委员会.日本沉管隧道抗震设计特点[J].世界隧道,1997(3):53-62.[3] 韩大建,周阿兴,黄炎生.珠江水下沉管隧道的抗震分析与设计(Ⅰ)[J].华南理工大学学报,1999,27(11):115-121.HAN Dajian,ZHOU Axing,HUANG Yansheng.Aseismatic analysis and design of the Pearl River tunnel(Ⅰ)-Time domain response method[J].Journal of South China University of Teclnology,1999,27(11):115-121.[4] 严松宏,高峰,李德武,等.南京长江沉管隧道的地震安全性评价[J].岩石力学与工程学报,2003,22(增2):2 800-2 803.YAN Songhong,GAO Feng,LI Dewu,et al.Estimation on seismic safety of Naming Changjiang submerged tunnel[J].Journal of Rock Mechanics and Engineering,2003,22(S2):2 800-2 803.[5] 刘学山.盾构隧道纵向抗震分析研究[J].地下空间,2003,23(2):166-172.LIU Xueshan.Analysis and study of longitudinal earthquake resistance of shield tunnel[J].Journal of Underground Space,2003,23(2):166-172.[6] 国家技术监督局,中华人民共和国建设部.核电厂抗震设计规范[S].北京:中国计划出版社,1996.[7] HE Chuan,KOIZUMI A.Seismic behavior in longitudinal direction of shield tunnel located at irregular ground[C]// The First International Cmference on Advances in Structural Engineering and Mechanics.Seoul:Techno-Press,1999:23-25.[8] 西南交通大学.盾构隧道地震响应分析与抗震措施研究[R].武汉长江隧道关键技术研究项目专题可行性研究报告,2005. -
点击查看大图
计量
- 文章访问数: 1785
- HTML全文浏览量: 80
- PDF下载量: 361
- 被引次数: 0
下载: