严重液化地层沉管隧道抗震计算
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摘要
结合工程实例,主要对地层液化等级判别、隧道地震作用计算方法等进行探讨研究。研究结果表明:对于埋深大的隧道工程,可以采用有限元法进行地层液化判别;不同的地层液化情况对地震作用计算结果,特别是对于接头处的内力影响很大,同时应充分考虑接头间止水带的影响。
Study is made on the judgment of the stratum liquefaction grade and the calculation methods for the seismic effect on tunnels,with Luntou-Shengwudao immersed tunnel as an example.Conclusions drawn are as follows: for tunnels with deep overburden,finite element method can be adopted to determine the stratum liquefaction grade;liquefaction conditions have great influence on the seismic effect calculation results,especially on the internal force of the joints;full consideration should be paid to the seismic influence on the water stop ties at the joints.
Study is made on the judgment of the stratum liquefaction grade and the calculation methods for the seismic effect on tunnels,with Luntou-Shengwudao immersed tunnel as an example.Conclusions drawn are as follows: for tunnels with deep overburden,finite element method can be adopted to determine the stratum liquefaction grade;liquefaction conditions have great influence on the seismic effect calculation results,especially on the internal force of the joints;full consideration should be paid to the seismic influence on the water stop ties at the joints.
引文
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[11]严松宏,李国军.南京长江隧道总体地震反应分析[J].兰州铁道学院学报,1999,18(5):19-23.(YAN Song-hong,LI Guojun.The seismic responses analysis for wholeNanjing Changjiang tunnel[J].Journal of Lanzhou RailwayInstitute,1999,18(5):19-23.(in Chinese))
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[14]王汝梁.地下管线的震害、抗震验算、设计与措施[M].北京:地震出版社,2007.
[2]蒋义康,叶立光.甬江水底隧道沉管段的基础处理[J].地下工程与隧道,1996(2):8-14.
[3]周松,刘千伟,杨国祥.常洪隧道关键施工技术概述[C]//上海市土木工程学会,上海隧道工程股份有限公司.城市交通隧道工程最新技术.上海:同济大学出版社,2003:476-485.
[4]沈秀芳,乔宗昭,陈鸿.上海外环隧道设计[C]//上海市土木工程学会,上海隧道工程股份有限公司.城市交通隧道工程最新技术.上海:同济大学出版社,2003:415-432.
[5]中华人民共和国建设部.GB50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2011.
[6]交通部公路规划设计院.公路工程抗震设计规范[S].北京:中国建筑工业出版社,2010.
[7]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):时程响应法[J].华南理工大学学报:自然科学版,1999,27(11):115-121.(HAN Dajian,ZHOU A-xing,HUANG Yansheng.A seismic analysis and design ofthepearl river tunnel(I):Time domain response method[J].Journal of South China University of Technology:Natu-ral Science,1999,27(11):115-121.(in Chinese))
[8]韩大建,周阿兴.沉管隧道地震响应分析的等效质点系模型探讨[J].华南理工大学学报:自然科学版,1999,27(11):108-114.(HAN Dajian,ZHOU Axing.A study ofthe equivalent mass-system models for the analysis of earth-quake response of an immersed tunnel[J].Journal of SouthChina University of Technology:Natural Science,1999,27(11):108-114.(in Chinese))
[9]高广运,张晓哲,水伟厚.地基土地震液化数学分析的新思路[J].上海地质,2003(4):25-29.(GAO Guangyun,ZHANG Xiaozhe,SHUI Weihou.New thinking of mathemati-cal analysis of subsoil liquefaction[J].Shanghai Geology,2003(4):25-29.(in Chinese))
[10]《工程地质手册》编委会.工程地质手册[M].4版.北京:中国建筑工业出版社,1990.
[11]严松宏,李国军.南京长江隧道总体地震反应分析[J].兰州铁道学院学报,1999,18(5):19-23.(YAN Song-hong,LI Guojun.The seismic responses analysis for wholeNanjing Changjiang tunnel[J].Journal of Lanzhou RailwayInstitute,1999,18(5):19-23.(in Chinese))
[12]严松宏,潘昌实.沉管隧道地震响应分析[J].现代隧道技术,2006,43(2):15-21.(YAN Songhong,PAN Chang-shi.Seismic response analyses of an immersed tube tunnel[J].Modern Tunnelling Technology,2006,43(2):15-21.(in Chinese))
[13]刘建飞,贺维国,曾进群.静力作用下沉管隧道三维有限元数值模拟[J].现代隧道技术,2007(1):5-9.(LIUJianfei,HE Weiguo,ZENG Jinqun.Three-dimensionalsimulation for the static behavior of immersed tube tunnels[J].Modern Tunnelling Technology,2007(1):5-9.(in Chinese))
[14]王汝梁.地下管线的震害、抗震验算、设计与措施[M].北京:地震出版社,2007.
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