Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station
China Earthquake Parameter Zoning (2016) has increased the seismic fortification intensity in Chengdu from VII to VIII. It is necessary to conduct in-depth discussion on the impact of the seismic performance of the built underground station structure. In this paper, a stratum-structure finite elemen...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/8158607 |
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| author | Ying Zeng Shiguang Xu Shiqian Yin |
| author_facet | Ying Zeng Shiguang Xu Shiqian Yin |
| author_sort | Ying Zeng |
| collection | DOAJ |
| description | China Earthquake Parameter Zoning (2016) has increased the seismic fortification intensity in Chengdu from VII to VIII. It is necessary to conduct in-depth discussion on the impact of the seismic performance of the built underground station structure. In this paper, a stratum-structure finite element model is established with a Chengdu subway station as an example. The model boundary adopts viscoelastic boundary, and the ground motion is input in the form of equivalent nodal force. The equivalent linearization method is used to consider the nonlinearity of soil materials. The time-history analysis of seismic fortification intensity of VII and VIII degrees is carried out, respectively. By comparing the calculation results of the two seismic fortification intensity ground motion conditions, it is concluded that the connection between the side wall and the floor is the weakest position of the station structure under the action of the earthquake; the seismic fortification intensity is increased from VII to VIII to the internal force of the structure. It has a relatively large impact, especially the most obvious impact on the bending moment. The results of the verification of the seismic time-history analysis show that the increase of fortification intensity will have a more obvious impact on the structural deformation, and the structural design of the station can meet the safety performance requirements of VII and VIII degrees of seismic fortification. The research has certain reference significance for the seismic safety evaluation of the built underground station structure in Chengdu area. |
| format | Article |
| id | doaj-art-7e09fa9f9da84312aa29ad3fb62a399f |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-7e09fa9f9da84312aa29ad3fb62a399f2025-02-03T01:24:48ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/81586078158607Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground StationYing Zeng0Shiguang Xu1Shiqian Yin2School of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaSchool of Land and Resources Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaChina Earthquake Parameter Zoning (2016) has increased the seismic fortification intensity in Chengdu from VII to VIII. It is necessary to conduct in-depth discussion on the impact of the seismic performance of the built underground station structure. In this paper, a stratum-structure finite element model is established with a Chengdu subway station as an example. The model boundary adopts viscoelastic boundary, and the ground motion is input in the form of equivalent nodal force. The equivalent linearization method is used to consider the nonlinearity of soil materials. The time-history analysis of seismic fortification intensity of VII and VIII degrees is carried out, respectively. By comparing the calculation results of the two seismic fortification intensity ground motion conditions, it is concluded that the connection between the side wall and the floor is the weakest position of the station structure under the action of the earthquake; the seismic fortification intensity is increased from VII to VIII to the internal force of the structure. It has a relatively large impact, especially the most obvious impact on the bending moment. The results of the verification of the seismic time-history analysis show that the increase of fortification intensity will have a more obvious impact on the structural deformation, and the structural design of the station can meet the safety performance requirements of VII and VIII degrees of seismic fortification. The research has certain reference significance for the seismic safety evaluation of the built underground station structure in Chengdu area.http://dx.doi.org/10.1155/2021/8158607 |
| spellingShingle | Ying Zeng Shiguang Xu Shiqian Yin Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station Advances in Civil Engineering |
| title | Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station |
| title_full | Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station |
| title_fullStr | Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station |
| title_full_unstemmed | Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station |
| title_short | Analysis on the Influence of Increasing Seismic Fortification Intensity on Seismic Performance of Underground Station |
| title_sort | analysis on the influence of increasing seismic fortification intensity on seismic performance of underground station |
| url | http://dx.doi.org/10.1155/2021/8158607 |
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