蠕滑断裂带隧道抗震技术

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• 英文论文题名：The Anti-seismic Technology of Tunnel for the Creep Fracture Zone
• 论文作者：郑宗溪 ; 孙其清 ; 喻渝
• 英文论文作者：Zheng Zongxi ; Sun Qiqing ; Yu Yu ; China Railway Eryuan Engineering Group Co.Ltd
• 年：2016
• 作者机构：中铁二院工程集团有限责任公司;
• 论文关键词：蠕滑断裂带 ; 隧道 ; 抗震
• 英文论文关键词：the creep fracture zone ; tunnel ; anti-seismic
• 会议召开时间：2016-10-14
• 会议录名称：“川藏铁路建设的挑战与对策”2016学术交流会论文集
• 语种：中文
• 分类号：U452.28
• 学会代码：ZGTD
• 会议名称：“川藏铁路建设的挑战与对策”2016学术交流会
• 会议地点：中国四川成都
• 主办单位：中国铁道学会、中国铁道学会工程分会、中国中铁股份有限公司、中铁二院工程集团有限责任公司
• 学会名称：中国铁道学会
• 页数：7
• 文件大小：1067k
• 原文格式：O
• 会议级别：全国

摘要

川藏铁路穿越多个板块缝合带,其中蠕滑断裂带的累计位移效应严重影响了隧道的安全性。通过大量资料调研,分析了断层相关参数对隧道结构的影响规律,总结并介绍了蠕滑断裂带隧道超挖、"铰接"、隔离耗能三种常用抗震技术,并探讨了各种方法的适用条件。结果表明:①在断层错动的作用下,随着断层倾角的不断增大,隧道轴线方向受影响的范围逐渐减小;②断层错动引起隧道破坏的距离都是上下错动最大,倾斜错动次之,最小的是左右错动;③断层破碎带的宽度越大,其对隧道造成的影响越大;④当断层破碎带宽度小于100m时,建议采用"超挖"预留变形量的方法进行隧道结构设计,当断层破碎带大于100m则应该进行隧道的"铰接"设计,必要时与超挖或者隔离耗能共同使用。
The Sichuan-Tibet railway traverses multiple plate suture zone,which the cumulative displacement effect of creep fracture zone seriously affected the safety of tunnel.Through the investigation of a large number of data,this paper analyze the influence law of fault related parameters to the tunnel structure,summarize and introduce three kinds of commonly used seismic technology for the creep fracture belt tunnel: "overbreak", "hinge", "energy isolation",and discussing the applicable conditions of various methods.The results showed that:①Under the effect of fault movement,the affected area decrease gradually at the axis direction of the tunnel,along with the increasing of the angle of inclination of the fault;②the tunnel destruction distance induced by fault movement is maximum to up and down movement,second tilt dislocation,the about dislocation to the minimum;③The more width of the fault zone,the greater the influence on the tunnel caused;④when the width of fault fracture zone is less than100 m,it is recommended that adopting tunnel structure design method of "the over excavation" and "residual deformation",when the fault fracture zone is more than 100 m,It is a time for carrying the design of "hinge",when necessary,combining with overbreak or isolated energy to use together.

引文

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