[1]李 肖,李名淦,贾明辉,等.可液化夹层场地中盾构隧道抗震性能研究[J].华南地震,2025,(01):123-131.[doi:10.13512/j.hndz.2025.01.15]
 LI Xiao,LI Minggan,JIA Minghui,et al.Seismic Performance of Shield Tunnels in Liquefaction Interlayer Sites[J].,2025,(01):123-131.[doi:10.13512/j.hndz.2025.01.15]
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可液化夹层场地中盾构隧道抗震性能研究()

华南地震[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2025年01期
页码:
123-131
栏目:
土木工程防震减灾
出版日期:
2025-03-30

文章信息/Info

Title:
Seismic Performance of Shield Tunnels in Liquefaction Interlayer Sites
文章编号:
1001-8662(2025)01-0123-09
作者:
李 肖1李名淦12贾明辉1潘 菁3栗书亚3陶连金3
1.北京市市政工程设计研究总院有限公司,北京 100082;2.北京交通大学 城市地下工程教育部重点实验室,北京100044;3.北京工业大学 城市与工程安全减灾省部共建教育部重点实验室,北京 100124
Author(s):
LI Xiao1LI Minggan12JIA Minghui1PAN Jing3LI Shuya3TAO Lianjin3
1.Beijing General Municipal Engineering Design&Research Institute Co.,Ltd.,Beijing 100082,China;2.Key Laboratory for Urban Underground Engineering of Ministry of Education,Beijing Jiaotong University,Beijing 100044, China;3.Key Laboratory of Urban Securit
关键词:
液化夹层数值模拟盾构隧道抗震设计
Keywords:
Liquefaction interlayerNumerical simulationShield tunnelSeismic design
分类号:
U455.43
DOI:
10.13512/j.hndz.2025.01.15
文献标志码:
A
摘要:
为了研究地震作用下可液化夹层场地中盾构隧道抗震性能,采用有限差分软件分析了地震作用下可液化夹层场地中隧道结构的横向收敛值、隧道倾斜角、周围砂土的超孔隙水压力以及结构内力等地震响应特征。研究结果表明:隧道顶部穿越液化土层时,液化土层对结构的危害较小;隧道底部穿越液化土层时,结构横向变形较大;隧道中部穿越液化土层时,结构容易发生剪切破坏。研究结果可以为强震作用下可液化夹层场地中盾构隧道抗震设计提供理论依据和科学参考。
Abstract:
To investigate the seismic performance of the shield tunnels in liquefaction interlayer sites under earthquakes, the seismic response characteristics of the tunnel structure, such as the lateral convergence value, tunnel inclination angle,the excess pore water pressure of the surrounding sandy soil and the internal force of the structure, were analyzed by using Finite Difference Software (FD-Software). The results show that when the top of the tunnel traverses the liquefiable soil layer,the liquefiable soil layer is less harmful to the structure. When the bottom of the tunnel traverses the liquefiable soil layer,the lateral deformation of the structure is larger. When the middle of the tunnel traverses the liquefiable soil layer, the structure is susceptible to shear damage. The results can provide a theoretical basis and scientific reference for the seismic design of shield tunnels in liquefaction interlayer sites under strong earthquakes.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2024-01-25
基金项目:国家自然科学基金项目(42072308);国家重点研发计划项目(2019YFC1509704)联合资助。
作者简介:李肖(1985-),男,高级工程师,研究方向为结构工程。E-mail:lx2204542@163.com
通信作者:李名淦(1979-),男,教授级高级工程师,研究方向为岩土与地下结构。E-mail:liminggan@163.com
更新日期/Last Update: 2025-03-30