【摘要】 针对新出现的土-隧道群相互体系,以某实际紧邻多孔交叠盾构隧道工程为研究背景,建立了土体-隧道群相互作用体系计算模型,通过全面的参数分析探讨了该复杂体系的地震响应规律。考虑的主要影响因素包括土体方面(土的分层特性)和隧道方面(隧道的半径、空间间距、埋深),并采用等价线性化方法考虑了土体的非线性特性。结果表明:隧道的半径、埋深和空间间距对场地土和隧道的地震响应影响显著;对于复杂的土体-隧道群体系而言,由水平地震动引起的土体竖向加速度响应应引起足够的重视。更多还原

【Abstract】 Focusing on the newly emergence of soil tunnel group interaction system,soil-tunnel group calculation model was established based on a practical adjacent multi-overlap shield tunnel engineering.The seismic response of the complicated interaction system was investigated and discussed by complete parameter analysis.The main influencing factors include the aspects of soil,which include the character of layered soil;the factors of tunnel,which contain tunnel radius,tunnel space distance and tunnel depth.And also,the soil nonlinear characteristic was considered by the equivalent linearization method.The results show that tunnel radius and space distance and depth have a significant influence on soil and tunnel seismic response. Much attention should be paid on soil vertical seismic response induced by input horizontal seismic wave for the complicate soil-tunnel group interaction system.更多还原