新建隧道方位对运营隧道稳定性的影响分析  

Analysis on Impact of Newly-built Tunnel Orientation on the Stability of Operational Tunnel

作　　者：王昆 

机构地区：[1]平顶山市公路交通勘察设计院,河南平顶山467000

出　　处：《路基工程》2017年第2期42-45,共4页Subgrade Engineering

摘　　要：基于ABAQUS软件,建立了新建隧道相对运营隧道不同方位时的有限元模型,分析新建隧道的不同方位对运营隧道结构变形、结构受力及地表沉降的影响。结果表明:新建隧道方位的变化对运营隧道的结构变形、结构轴力及弯矩、地表沉降变化均有不同程度的影响,其中,随着隧道之间的中心距离增大,运营隧道的结构变形、轴力及弯矩逐渐减小;当中心距离一定时,方位角度越大,运营隧道的结构受力越大,地表沉降的最大值越小;方位角度的绝对值越大,运营隧道的结构轴力及弯矩也越大。Abstract： The finite element model of different orientation for the impact of newly-built tunnel relalive to operational tunnel is established based on ABAQUS software to analyze the impact of different orientations of the newly-built tunnel on the structural distortion, structural force and ground surface settlement of the operational tunnel. The results show that the variation of the newly-buih tunnel orientation will cause impact on the structural distortion, structural axial force and bending moment and ground surface settlement of the operational tunnel in varying degrees. With the increase of the central distance between the tunnels, the structural distortion, axial force and bending moment of the operational tunnel will decrease gradually. When the central distance is fixed, the larger the orientation angle, the larger the structural force of the operational tunnel and the smaller the maximum value of ground surface settlement. The larger the absolute value of the orientation angle, the larger the structural axial force and bending moment of the operational tunnel.

关 键 词：近接隧道设计 相对方位 稳定性 有限元分析 

分 类 号：U452.2[建筑科学—桥梁与隧道工程]