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以甘肃省某高速公路黄土隧道为工程背景,通过数值模拟,采用荷载-结构法对直墙式和曲墙式(针对一次衬砌)两种衬砌结构断面形式分别进行计算,并对比分析,综合比较,得出曲墙式衬砌结构整体受力特性优于直墙式衬砌。研究方法和结论为黄土隧道衬砌结构设计提供一定的理论支撑,对分析黄土隧道衬砌结构的受力特性,建立更加科学合理的隧道结构形式具有一定的参考价值。
Taking the loess tunnel of a freeway in Gansu Province as the engineering background, numerical simulation and load-structure method were used to calculate the cross-sectional forms of the two types of lining structures, straight wall type and curved type (for primary lining type) respectively, and compared and analyzed comprehensively , It is concluded that the overall stress characteristics of curved wall lining structure is better than straight wall lining. The research methods and conclusions provide some theoretical support for the design of lining structure of loess tunnel, which is of certain reference value for analyzing the mechanical characteristics of loess tunnel lining structure and establishing a more scientific and reasonable tunnel structure.