Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method
Weak rock mass behavior is an important and challenging consideration during construction and utilization of a tunnel. Tunnel surrounding ground deformation in weak rocks causes to gradual development of loading on the support system and threats the opening stability. In this research, time-dependen...
| Main Authors: | , , |
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| Format: | Journal Article |
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Pergamon
2013
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| Online Access: | http://hdl.handle.net/20.500.11937/25982 |
| _version_ | 1848751857385603072 |
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| author | Sharifzadeh, Mostafa Tarifard, A. Moridi, Mohammad Ali |
| author_facet | Sharifzadeh, Mostafa Tarifard, A. Moridi, Mohammad Ali |
| author_sort | Sharifzadeh, Mostafa |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Weak rock mass behavior is an important and challenging consideration during construction and utilization of a tunnel. Tunnel surrounding ground deformation in weak rocks causes to gradual development of loading on the support system and threats the opening stability. In this research, time-dependent behavior of Shibli twin tunnels was investigated using laboratory testing, monitoring data, and finite difference numerical simulation approaches. The host rock of Shibli tunnels are mainly composed of gray to black Shale, Marl and calcareous Shale. Geological maps and reports demonstrate a heavily jointed condition in the host rock through two orogenic phases. The experiment was organized in following order to understand the behavior of the rock mass around the tunnels. At first, triaxial creep test were conducted on intact rock specimens. Then, the time-dependent behavior of the tunnel host rock was numerically simulated considering Burger-creep visco-plastic model (CVISC). Finally, displacement based direct back analysis using univariate optimization algorithm was applied. Also, the properties of the CVISC model and initial stress ratio were estimated. Numerical modeling was verified by its comparison with tunnel displacement monitoring results. The creep behavior of the rock mass was predicted during tunnel service life based on back analysis results. Results show that thrust force, bending moment, and the resulting axial stresses will gradually increase at the spring line of the final lining. After 55 years of tunnel utilization the compressive strengths of lining concrete will not be stable against the induced-stresses by thrust force and bending moment, thus the tunnel inspection and rehabilitation are recommended. |
| first_indexed | 2025-11-14T07:59:23Z |
| format | Journal Article |
| id | curtin-20.500.11937-25982 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:59:23Z |
| publishDate | 2013 |
| publisher | Pergamon |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-259822017-09-13T15:25:12Z Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method Sharifzadeh, Mostafa Tarifard, A. Moridi, Mohammad Ali Weak rock mass behavior is an important and challenging consideration during construction and utilization of a tunnel. Tunnel surrounding ground deformation in weak rocks causes to gradual development of loading on the support system and threats the opening stability. In this research, time-dependent behavior of Shibli twin tunnels was investigated using laboratory testing, monitoring data, and finite difference numerical simulation approaches. The host rock of Shibli tunnels are mainly composed of gray to black Shale, Marl and calcareous Shale. Geological maps and reports demonstrate a heavily jointed condition in the host rock through two orogenic phases. The experiment was organized in following order to understand the behavior of the rock mass around the tunnels. At first, triaxial creep test were conducted on intact rock specimens. Then, the time-dependent behavior of the tunnel host rock was numerically simulated considering Burger-creep visco-plastic model (CVISC). Finally, displacement based direct back analysis using univariate optimization algorithm was applied. Also, the properties of the CVISC model and initial stress ratio were estimated. Numerical modeling was verified by its comparison with tunnel displacement monitoring results. The creep behavior of the rock mass was predicted during tunnel service life based on back analysis results. Results show that thrust force, bending moment, and the resulting axial stresses will gradually increase at the spring line of the final lining. After 55 years of tunnel utilization the compressive strengths of lining concrete will not be stable against the induced-stresses by thrust force and bending moment, thus the tunnel inspection and rehabilitation are recommended. 2013 Journal Article http://hdl.handle.net/20.500.11937/25982 10.1016/j.tust.2013.07.014 Pergamon restricted |
| spellingShingle | Sharifzadeh, Mostafa Tarifard, A. Moridi, Mohammad Ali Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method |
| title | Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method |
| title_full | Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method |
| title_fullStr | Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method |
| title_full_unstemmed | Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method |
| title_short | Time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method |
| title_sort | time-dependent behavior of tunnel lining in weak rock mass based on displacement back analysis method |
| url | http://hdl.handle.net/20.500.11937/25982 |