摘要
结合福州金鸡山隧道拓宽改造工程,通过建立离散元计算模型,对拓宽改造方案进行了优化分析.分别研究了不同方案下隧道围岩屈服、围岩变形、拱顶下沉、衬砌内力特征及中夹岩柱应力状态,研究结果表明:方案1能够保证满足隧道建成后的安全要求,对既有建构筑物的扰动最小,且隧道整体受力状态较好,是最佳方案.研究结果可为今后类似工程的设计、施工提供借鉴与参考.
Taking Fuzhou Jinjishan Tunnel extension alterative project for example,the optimal schemes have been analyzed by establishing the discrete element calculation model.The tunnel surrounding rock yield and deformation,vault subsidence,lining internal force characteristics and stress state of middle rock pillars are studied for the different schemes.The results show that the recommendation is scheme 1 which ensures that the tunnel is capable to meet the safety requirements;not only the disturbance of the buildings（structures） is minimum,but also the stress state of tunnel is best,so as to provide some references to design and construction of similar projects.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2013年第3期339-344,共6页
Engineering Journal of Wuhan University
关键词
隧道
拓宽改造
离散元
优化分析
tunnel
widening alteration
discrete element method
optimization analysis
