Model test study on the dynamic response of the portal section of two parallel tunnels in a seismically active area

Shaking table tests of tunnel linings in progressive states of damage

“…2(b)). The model tunnel was able to deform as desired during earthquake excitations without much interference from the boundary regions, which has been confirmed by several researchers (Chen et al, 2010;Sun et al, 2011). A layer of gravel was epoxied to the base of the model box in order to create a rough surface with a friction angle close to that of the soil backfill (Fig.…”

“…The seismic response of tunnel linings has been investigated by many researchers using various methods including theoretical analyses, numerical simulations, and physical model tests (Hashash et al, 2005;Bathurst et al, 2007;Hwang and Lu, 2007;Konotoe et al, 2008;Chen et al, 2010;Sevim, 2011;Sun et al, 2011;Chen and Shen, 2014). The shaking table test is an advanced and sophisticated method in geotechnical earthquake research and has been used to study the dynamic response of tunnels under seismic vibrations (Chen et al, 2010;Sun et al, 2011;Chen and Shen, 2014).…”

“…The shaking table test is an advanced and sophisticated method in geotechnical earthquake research and has been used to study the dynamic response of tunnels under seismic vibrations (Chen et al, 2010;Sun et al, 2011;Chen and Shen, 2014). However, most of the previous studies were performed to verify analytical methods and to present experimental data about the eventual stability of tunnels.…”

Multi-point shaking table test for long tunnels subjected to non-uniform seismic loadings - part II: Application to the HZM immersed tunnel

“…For the experiment of long tunnel, a model box, as adopted by other researchers [9,10], should be designed to account for the formation of a linear-arrayed-table. The factor to be considered includes the capacity of a shaking table (payload, shaking frequency and size of holding plate), dimension of the pedestal-slot, scale of the model and the model box.…”

Safety Assessment of Tunnel Portals for Site Selection Based on Spatial Information Geoprocessing

“…A portal section is a sensitive environment typically located on a gentle slope with a thin-covering rock layer composed of weather-resistant materials. Portal stability is markedly influenced by geographical, geological, meteorological, and hydrological factors [4][5][6][7][8]. Wang and Huane [9] studied tunnel constructions in Taiwan and reported that landslides and slope collapses can be detrimental to the success of portal constructions.…”