Abstract
AbstractBased on the principle of virtual power, equilibrium conditions are established for the forces within a cross section of a tunnel top heading driven according the New Austrian Tunneling Method (NATM). External forces, namely impost actions and ground pressure distributions following a third-order polynomial, are analytically linked with internal forces, such as axial forces and bending moments, arising as integrals over the shell thickness, of circumferential normal stresses. The latter are related, via an aging viscoelastic shotcrete material model, to circumferential normal strains, as well as to radial and circumferential displacement components. This allows for analytical transformation of displacement measurement data collected at the crown and the footings of the shell segment, into ground pressure and impost action evolutions, together with all the associated force and stress quantities. For the Sieberg tunnel, driven in Miocene clay marl, our data-driven analytical mechanics model evidences virtually uniform ground pressure distributions, leading to a first rapidly increasing, and then mildly decreasing utilization degree of the shotcrete shell.
Publisher
Springer Science and Business Media LLC
Subject
Mechanical Engineering,Computational Mechanics
Reference40 articles.
1. Ausweger, M., Binder, E., Lahayne, O., Reihsner, R., Maier, G., Peyerl, M., Pichler, B.: Early-age evolution of strength, stiffness, and non-aging creep of concretes: experimental characterization and correlation analysis. Materials 12(2), 481–489 (2019). https://doi.org/10.3390/ma12020207
2. Brandtner, M., Moritz, B., Schubert, P.: On the challenge of evaluating stress in a shotcrete lining: experiences gained in applying the hybrid analysis method. Felsbau 25(5), 93–98 (2007)
3. Carranza-Torres, C., Fairhurst, C.: Application of the convergence-confinement method of tunnel design to rock masses that satisfy the Hoek-Brown failure criterion. Tunnell. Underground Space Technol. 15(2), 187–213 (2000). https://doi.org/10.1016/S0886-7798(00)00046-8
4. CEB-FIB: Model Code for Concrete Structures 2010. Ernst & Sohn, Berlin, Germany (2010)
5. Fenner, R.: Untersuchungen zur Erkenntnis des Gebirgsdrucks [Investigations to the knowledge of the rock pressure]. Glückauf, Berg- und Hüttenmännische Zeitschrift 32, 681–695 (1938)
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献