赵乐之¹，刘晓峰²，乔  宁²
    (1 北京市市政工程设计研究总院，北京100082; 2 烟建集团第六建筑安装分公司，烟台264003)

[摘要] 头道穴隧道是怀丰公路的重点工程。针对其周围地质条件复杂而造成明洞段偏压的情况，考虑到工程设置偏压挡土墙等施工特点，采用荷载结构法对该偏压明洞衬砌结构进行了有限元分析计算，分析了衬砌结构的位移与应力情况，得出能够保证隧道结构安全的设计方案，并总结论述公路偏压隧道病害防治措施。
[关键词] 偏压隧道；荷载结构法；衬砌结构
 

    Numerical analysis on the design of unsymmetrically loaded tunnel
    Zhao Lezhi¹, Liu Xiaofeng², Qiao Ning²
    (1 Beijing General Municipal Engineering Design& Research Institute, Beijing 100082, China; 2 Yanjian Group Sixth Construction and Installation Branch Company, Yantai 264003, China)

Abstract: Tunnel named Tou Dao Xue is a key project of Huaifeng highway. According to unsymmetrical load caused by around geological conditions in the open cut tunnel, considering unsymmetrically loaded retaining wall set up in the project, the finite element analysis on the lining structure is carried out by means of load structure method. The displacement and stress oflining structure are analyzed so that a design scheme ensuring safe tunnel structure is obtained. In addition, disease control measures of unsymmetrically loaded highway tunnel are concluded.
Keywords: unsymmetrically loaded tunnel; load structure method; lining structure