断层错动-地震不同时序作用对隧道的影响研究  

Study on the Impact of Fault Displacement and Seismic Actions at Different Temporal Sequences on Tunnel Behavior

作　　者：王综仕 韩现民 徐孟起 王为鑫 WANG Zongshi;HAN Xianmin;XU Mengqi;WANG Weixin(School of Civil Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;China Railway 14th Bureau Group Tunnel Engineering Co.Ltd.,Jinan 250000,China)

机构地区：[1]石家庄铁道大学土木工程学院,河北石家庄050043 [2]中铁十四局集团隧道工程有限公司,山东济南250000

出　　处：《石家庄铁道大学学报（自然科学版）》2024年第4期45-50,124,共7页Journal of Shijiazhuang Tiedao University(Natural Science Edition)

摘　　要：针对穿越活断层隧道结构在地震和断层错动下的叠加影响问题,采用三维有限元对比分析了地震、错动以及2种不同时序作用下穿越逆断层隧道结构的损伤特征和铰接设计对损伤的影响。研究表明,先错后震对隧道结构造成的损伤较为严重,且以拉损伤为主,先错后震的作用下隧道受拉和受压损伤率相较于先震后错分别增大44%和85.7%,相较于单独错动分别增大200%和550%;设置铰接之后,先震后错作用下隧道受拉和受压损伤率分别降低84%和85.7%,先错后震作用下隧道受拉和受压损伤率分别降低66.7%和76.9%。In responsse to the superposition effect of earthquake and fault displacement on the structure of the tunnel crossing active fault,a three-dimensional finite element(FE)was used to analyze the damage characteristics and the influence of the articulated design on the damage of the tunnel structure crossing the reverse fault under earthquake,displacement and two different temporal sequences.The results show that the damage caused by the first displacement and then the earthquake is more serious,and the tensile damage is the main one.Under the action of first displacement and then earthquake,the tensile and compressive damage rates of the tunnel increase by 44%and 85.7%,respectively,compared to the first earthquake and then the displacement,and increase by 200%and 550%,respectively compared to the single displacemnet.After the hinge is set,the tensile and compressive damage rates of the tunnel are reduced by 84%and 85.7%,respectively,under the action of first earthquake and then displacement.Under the action of first displacement and then earthquake,the tensile and compressive damage rates of the tunnel are reduced by 66.7%and 76.9%,respectively.

关 键 词：错动-地震时序 隧道结构 断层错动 损伤 铰接设计 

分 类 号：U45[建筑科学—桥梁与隧道工程]