Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave Incidence
It is necessary to study the problem of seismic wave scattering in composite stratum for tunnel engineering because the existence of composite strata will make the stress of tunnels more complicated during earthquakes. In this thesis, a series solution of the scattering wave field of the composite s...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8827737 |
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| author | Hui Qi Yang Zhang Jing Guo Fuqing Chu |
| author_facet | Hui Qi Yang Zhang Jing Guo Fuqing Chu |
| author_sort | Hui Qi |
| collection | DOAJ |
| description | It is necessary to study the problem of seismic wave scattering in composite stratum for tunnel engineering because the existence of composite strata will make the stress of tunnels more complicated during earthquakes. In this thesis, a series solution of the scattering wave field of the composite strata and lining is obtained using the complex function method. According to the stress and displacement boundary conditions between the composite stratum and the lining, a series of equations are established and are solved by means of Fourier transformation and finite term truncation, and the calculation errors are also discussed. Through programming calculations, the dynamic stress concentration factor (DSCF) of circular tunnels in the two types of composite strata, “hard-over-soft” and “soft-over-hard,” is analyzed when SH waves propagate, and certain conclusions on the scattering of SH waves that are distinguished from the case of single homogeneous layers are reached. The research in this article reveals some phenomena. For the Q345 steel lining in the calculation examples, it is found in this paper that increasing the thickness of the lining is effective to reduce the influence of the DSCF. But, for C30 concrete, increasing the thickness of the lining reduces the DSCF of the outer surface while increasing the DSCF of the inner surface. |
| format | Article |
| id | doaj-art-bd098f2318a0449682e1871bcae60895 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-bd098f2318a0449682e1871bcae608952025-08-20T02:18:51ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88277378827737Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave IncidenceHui Qi0Yang Zhang1Jing Guo2Fuqing Chu3College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaCollege of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaIt is necessary to study the problem of seismic wave scattering in composite stratum for tunnel engineering because the existence of composite strata will make the stress of tunnels more complicated during earthquakes. In this thesis, a series solution of the scattering wave field of the composite strata and lining is obtained using the complex function method. According to the stress and displacement boundary conditions between the composite stratum and the lining, a series of equations are established and are solved by means of Fourier transformation and finite term truncation, and the calculation errors are also discussed. Through programming calculations, the dynamic stress concentration factor (DSCF) of circular tunnels in the two types of composite strata, “hard-over-soft” and “soft-over-hard,” is analyzed when SH waves propagate, and certain conclusions on the scattering of SH waves that are distinguished from the case of single homogeneous layers are reached. The research in this article reveals some phenomena. For the Q345 steel lining in the calculation examples, it is found in this paper that increasing the thickness of the lining is effective to reduce the influence of the DSCF. But, for C30 concrete, increasing the thickness of the lining reduces the DSCF of the outer surface while increasing the DSCF of the inner surface.http://dx.doi.org/10.1155/2020/8827737 |
| spellingShingle | Hui Qi Yang Zhang Jing Guo Fuqing Chu Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave Incidence Advances in Civil Engineering |
| title | Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave Incidence |
| title_full | Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave Incidence |
| title_fullStr | Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave Incidence |
| title_full_unstemmed | Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave Incidence |
| title_short | Dynamic Stress Analysis of a Circular-Lined Tunnel in Composite Strata-SH Wave Incidence |
| title_sort | dynamic stress analysis of a circular lined tunnel in composite strata sh wave incidence |
| url | http://dx.doi.org/10.1155/2020/8827737 |
| work_keys_str_mv | AT huiqi dynamicstressanalysisofacircularlinedtunnelincompositestratashwaveincidence AT yangzhang dynamicstressanalysisofacircularlinedtunnelincompositestratashwaveincidence AT jingguo dynamicstressanalysisofacircularlinedtunnelincompositestratashwaveincidence AT fuqingchu dynamicstressanalysisofacircularlinedtunnelincompositestratashwaveincidence |