摘要
在盾构法施工的隧道中,衬砌通用楔形管片封顶块拼装位置的合理选择是保证施工质量的重要条件。文章在传统的基于隧道轴线几何原理的封顶块位置选择的基础上,提出了一种受约束的支持向量机的分类方法,其利用历史数据进行封顶块位置的调整,这种方法与单纯几何方法相比,可以更好地兼顾盾构姿态和管片姿态之间的关系,有利于提高建成隧道的质量。这两个方法互为补充,被应用于"盾构法隧道管片选型系统"中。系统在上海长江隧道工程施工过程中进行了试运行,取得良好的工程效果。
In shield tunneling reasonable selection for the position of key segments in universal trapezoidal tapered rings is crucial for securing the quality of construction. Aside from the traditional method for key position selection based on geometric analysis, this paper proposes another classification method based on restrained support vector machine, which can regulate the position of the key segments by utilizing historic engineering data. The novel method is better than pure geometric approach in that it can account for the relationship between the gesture of shield and that of the segments thereupon to better the quality of tunnels constructed. These two methods are complementary each other when used in the system of ＂Type selection of segments for shield tunnels＂ which has been successfully applied in the Shanghai Yangtse River Tunnel project.
出处
《现代隧道技术》
EI
北大核心
2009年第5期13-18,22,共7页
Modern Tunnelling Technology
基金
国家自然科学基金资助项目
编号:50778109
上海市科学委员会资助项目
编号:07DZ22105
关键词
地铁隧道
楔形管片
封顶块选择
支持向量机
Metro tunnel
Tapered segment
Position selection of key segment
Support vector machine
