中南大学学报（自然科学版）2012，Vol.43Issue(3)：1131-1137,7.
考虑衬砌屈服的深埋水工隧洞应力解析解
Analytical solution for stresses of deep hydraulic tunnel considering linear yielding
摘要
Abstract
With proper choice of the first principal stress according to different stress states in different engineering instances, an analytical solution for stresses around a deep hydraulic tunnel with liner yielding was deduced based on the unified strength theory. Choosing different unified strength theory parameter (b), a series of orderly stress field, critical pressure and the plastic radius versus the inner hydraulic pressure were obtained, which can be adopted for more materials and structures. The differences were found between this paper's method and the traditional method through an engineering case. The results show that it is accurate and more accord with engineering practice to consider the difference of first principal stress. The influence of the unified strength theory parameter is discussed. The applicability of the obtained formulas is gained according to the critical pressures.关键词
圆形隧洞/衬砌/统一强度理论/弹塑性分析Key words
circular tunnel/ liner/ unified strength theory/ elastic-plastic analysis分类
建筑与水利引用本文复制引用
曾开华,黎剑华,许家雄,叶青..考虑衬砌屈服的深埋水工隧洞应力解析解[J].中南大学学报（自然科学版）,2012,43(3):1131-1137,7.基金项目
国家自然科学基金资助项目(50969007) （50969007）
