caa a22 4500 555240746 20200430031146.0 cr unu---uuuuu 190204e201902 xx s 000 0 eng 10.3929/ethz-b-000309507 doi 10.1016/j.soildyn.2018.11.018 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/309507 The effect of tunnel lining modelling approaches on the seismic response of sprayed concrete tunnels in coarse-grained soils [Elektronische Daten] [Georgios Kampas, Jonathan Adam Knappett, Michael John Z. Brown, Ioannis Anastasopoulos, Nikitas Nikolaos, Raul Fuentes] Soil dyn. earthqu. eng. Open access ethresearch Major seismic events have shown that tunnels in cohesionless soils may suffer extensive seismic damage. Proper modelling can be of great importance for predicting and assessing their seismic performance. This paper investigates the effect of lining structural modelling on the seismic behaviour of horseshoe-shaped tunnels in sand, inspired from an actual Metro tunnel in Santiago, Chile. Three different approaches are comparatively assessed: elastic models consider sections that account for: (a) linear elastic lining assuming the geometric stiffness; (b) linear elastic lining matching the uncracked stiffness of reinforced concrete (RC); and (c) nonlinear RC section, accounting for stiffness degradation and ultimate capacity, based on moment-curvature relations. It is shown that lining structural modelling can have major implications on the predicted tunnel response, ranging from different values and distributions of the lining sectional forces, to differences in the predicted post-earthquake settlements, which can have implications on the seismic resilience of aboveground Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Numerical modelling ethresearch Seismic analysis ethresearch Tunnel design ethresearch Nonlinear behaviour ethresearch Horseshoe section ethresearch Lining forces ethresearch Post-earthquake settlements ethresearch Kampas Georgios joint author Knappett Jonathan Adam joint author Brown Michael John Z. joint author Anastasopoulos Ioannis joint author Nikolaos Nikitas joint author Fuentes Raul joint author Soil Dynamics and Earthquake Engineering Amsterdam : Elsevier 117, pp. 122-137 0267-7261 http://hdl.handle.net/20.500.11850/309507 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/309507 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- Kampas Georgios joint author ETHRESEARCH 700 1- Knappett Jonathan Adam joint author ETHRESEARCH 700 1- Brown Michael John Z. joint author ETHRESEARCH 700 1- Anastasopoulos Ioannis joint author ETHRESEARCH 700 1- Nikolaos Nikitas joint author ETHRESEARCH 700 1- Fuentes Raul joint author ETHRESEARCH 773 0- Soil Dynamics and Earthquake Engineering Amsterdam : Elsevier 117, pp. 122-137 0267-7261 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access