隧道工程纵向变形的研究

Study of longitudinal deformation for tunnel engineering

各类线形隧道与地下工程的纵向变形问题愈发严重,对其展开的相关研究工作却相对滞后。将隧道划分为岩石隧道与土质隧道分别进行研究,针对两类隧道各自的特点和产生纵向变形的原因,提出了进行实验模拟的设计方案、计算地层刚度及建立纵向等效模型的方法、以及如何考虑岩(土)体与隧道结构的共同作用分析它们的内力与变形的研究思路。上述方法与思路可为同类研究及工程实际中采取相应措施控制纵向不均匀沉降及优化设计提供参考与建议。

The longitudinal deformation of all kinds of linear tunnels and underground engineering is becoming more and more serious, but the related research work is relatively lagging behind. Tunnels were divided into rock and soil ones and studied respectively in this paper. According to the different characteristics of two kinds of tunnels and the causes of longitudinal deformation, this paper put forward the design scheme of experimental simulation, the methods of calculating stratum stiffness and setting up longitudinal equivalent model, and the research thought of analyzing their internal force and deformation by considering the interacting of rock （soil） mass and tunnel structure with each other. The above methods and ideas can provide reference scheme and suggestion for similar research and the actual projects, in which the longitudinal uneven settlement and optimi- zation design were controlled by taking corresponding measures.