Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Seismic response analysis of shallowly buried subway station in inhomogeneous clay site
https://orcid.org/0000-0001-5619-0147
Abstract It is of great significance to study the seismic response of the shallowly buried subway station in the inhomogeneous site caused by the soil consolidation. The dynamic characteristics of Shanghai soft clay under different confining pressures were studied by a series of dynamic triaxial tests. The nonlinear analysis was used to investigate the influence of the inhomogeneous clay site on the seismic response of the shallowly buried subway station. The variations of dynamic shear modulus ratio and damping ratio under different buried depths were obtained. The research results indicate that the damage to subway stations is more serious in the inhomogeneous clay site under the same seismic wave. The inhomogeneity of the clay site has an amplification effect on the horizontal relative displacement between the ceiling and bottom slabs, as well as the vertical displacement of the ground surface. However, the effect of the inhomogeneous site on the acceleration of the slabs and the maximum horizontal relative displacement of the middle column is small. After the earthquake, the horizontal relative displacement of the middle column is strongly affected by the inhomogeneous site. The results can provide a reference to the earthquake prevention and disaster reduction in the soft clay area.
Highlights Variations of dynamic shear modulus and damping ratio with depths were considered. Seismic response was analyzed with considering inhomogeneity of clay site. Seismic response of inhomogeneous site was compared with that of homogeneous site.
Seismic response analysis of shallowly buried subway station in inhomogeneous clay site
https://orcid.org/0000-0001-5619-0147
Abstract It is of great significance to study the seismic response of the shallowly buried subway station in the inhomogeneous site caused by the soil consolidation. The dynamic characteristics of Shanghai soft clay under different confining pressures were studied by a series of dynamic triaxial tests. The nonlinear analysis was used to investigate the influence of the inhomogeneous clay site on the seismic response of the shallowly buried subway station. The variations of dynamic shear modulus ratio and damping ratio under different buried depths were obtained. The research results indicate that the damage to subway stations is more serious in the inhomogeneous clay site under the same seismic wave. The inhomogeneity of the clay site has an amplification effect on the horizontal relative displacement between the ceiling and bottom slabs, as well as the vertical displacement of the ground surface. However, the effect of the inhomogeneous site on the acceleration of the slabs and the maximum horizontal relative displacement of the middle column is small. After the earthquake, the horizontal relative displacement of the middle column is strongly affected by the inhomogeneous site. The results can provide a reference to the earthquake prevention and disaster reduction in the soft clay area.
Highlights Variations of dynamic shear modulus and damping ratio with depths were considered. Seismic response was analyzed with considering inhomogeneity of clay site. Seismic response of inhomogeneous site was compared with that of homogeneous site.
Seismic response analysis of shallowly buried subway station in inhomogeneous clay site
https://orcid.org/0000-0001-5619-0147
Abstract It is of great significance to study the seismic response of the shallowly buried subway station in the inhomogeneous site caused by the soil consolidation. The dynamic characteristics of Shanghai soft clay under different confining pressures were studied by a series of dynamic triaxial tests. The nonlinear analysis was used to investigate the influence of the inhomogeneous clay site on the seismic response of the shallowly buried subway station. The variations of dynamic shear modulus ratio and damping ratio under different buried depths were obtained. The research results indicate that the damage to subway stations is more serious in the inhomogeneous clay site under the same seismic wave. The inhomogeneity of the clay site has an amplification effect on the horizontal relative displacement between the ceiling and bottom slabs, as well as the vertical displacement of the ground surface. However, the effect of the inhomogeneous site on the acceleration of the slabs and the maximum horizontal relative displacement of the middle column is small. After the earthquake, the horizontal relative displacement of the middle column is strongly affected by the inhomogeneous site. The results can provide a reference to the earthquake prevention and disaster reduction in the soft clay area.
Highlights Variations of dynamic shear modulus and damping ratio with depths were considered. Seismic response was analyzed with considering inhomogeneity of clay site. Seismic response of inhomogeneous site was compared with that of homogeneous site.
Seismic response analysis of shallowly buried subway station in inhomogeneous clay site
Cui, Zhen-Dong (Autor:in) / Zhang, Long-Ji (Autor:in) / Zhan, Zhi-Xiang (Autor:in)
19.04.2023
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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