Seismic Study of Skew Bridge Supported on Laminated-Rubber Bearings
Skew bridges consisting of simply supported girders, continuous decks, and laminated-rubber bearings are widely used in western China; however, they are highly vulnerable to strong earthquakes. To investigate the seismic performance of skew bridges considering the sliding behavior of laminated-rubbe...
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| Main Authors: | , , , |
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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/10.1155/2020/8899693 |
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| _version_ | 1832546785106591744 |
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| author | Xueshan Liu Wei Guo Jianzhong Li Hua Zhang |
| author_facet | Xueshan Liu Wei Guo Jianzhong Li Hua Zhang |
| author_sort | Xueshan Liu |
| collection | DOAJ |
| description | Skew bridges consisting of simply supported girders, continuous decks, and laminated-rubber bearings are widely used in western China; however, they are highly vulnerable to strong earthquakes. To investigate the seismic performance of skew bridges considering the sliding behavior of laminated-rubber bearings, the Duxiufeng Bridge located in Sichuan, China, was used as a prototype bridge. This bridge is a skew bridge that suffered seismic damage during the 2008 Wenchuan earthquake. The possible seismic response of this skew bridge under the Wenchuan earthquake was simulated, and the postearthquake repair methods were analyzed considering the effects of bearing types and cable restrainers. Parametric studies, using the finite element method, were also performed to investigate the effects of the skew angle and friction coefficient of the bearings on the seismic response of the skew bridge. The results indicate that pin-free bearings could effectively control the seismic displacement of the bridge, and the cable restrainers with an appropriate stiffness could significantly reduce the longitudinal residual displacements. The effect of skew angles is less significant on skew bridges with laminated-rubber bearings than on rigid-frame skew bridges because of the sliding between the girders and bearings. The residual displacements of the bearings were more sensitive to the variation in the friction coefficient between the laminated-rubber bearings and the girders compared to the maximum seismic displacements. |
| format | Article |
| id | doaj-art-13560ac24da34a219357da68299b45cb |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-13560ac24da34a219357da68299b45cb2025-02-03T06:46:58ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88996938899693Seismic Study of Skew Bridge Supported on Laminated-Rubber BearingsXueshan Liu0Wei Guo1Jianzhong Li2Hua Zhang3State Key Lab for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, ChinaT.Y.Lin International Engineering Consulting (China) Co., Ltd., Chongqing 401120, ChinaState Key Lab for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, ChinaState Key Lab for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, ChinaSkew bridges consisting of simply supported girders, continuous decks, and laminated-rubber bearings are widely used in western China; however, they are highly vulnerable to strong earthquakes. To investigate the seismic performance of skew bridges considering the sliding behavior of laminated-rubber bearings, the Duxiufeng Bridge located in Sichuan, China, was used as a prototype bridge. This bridge is a skew bridge that suffered seismic damage during the 2008 Wenchuan earthquake. The possible seismic response of this skew bridge under the Wenchuan earthquake was simulated, and the postearthquake repair methods were analyzed considering the effects of bearing types and cable restrainers. Parametric studies, using the finite element method, were also performed to investigate the effects of the skew angle and friction coefficient of the bearings on the seismic response of the skew bridge. The results indicate that pin-free bearings could effectively control the seismic displacement of the bridge, and the cable restrainers with an appropriate stiffness could significantly reduce the longitudinal residual displacements. The effect of skew angles is less significant on skew bridges with laminated-rubber bearings than on rigid-frame skew bridges because of the sliding between the girders and bearings. The residual displacements of the bearings were more sensitive to the variation in the friction coefficient between the laminated-rubber bearings and the girders compared to the maximum seismic displacements.http://dx.doi.org/10.1155/2020/8899693 |
| spellingShingle | Xueshan Liu Wei Guo Jianzhong Li Hua Zhang Seismic Study of Skew Bridge Supported on Laminated-Rubber Bearings Advances in Civil Engineering |
| title | Seismic Study of Skew Bridge Supported on Laminated-Rubber Bearings |
| title_full | Seismic Study of Skew Bridge Supported on Laminated-Rubber Bearings |
| title_fullStr | Seismic Study of Skew Bridge Supported on Laminated-Rubber Bearings |
| title_full_unstemmed | Seismic Study of Skew Bridge Supported on Laminated-Rubber Bearings |
| title_short | Seismic Study of Skew Bridge Supported on Laminated-Rubber Bearings |
| title_sort | seismic study of skew bridge supported on laminated rubber bearings |
| url | http://dx.doi.org/10.1155/2020/8899693 |
| work_keys_str_mv | AT xueshanliu seismicstudyofskewbridgesupportedonlaminatedrubberbearings AT weiguo seismicstudyofskewbridgesupportedonlaminatedrubberbearings AT jianzhongli seismicstudyofskewbridgesupportedonlaminatedrubberbearings AT huazhang seismicstudyofskewbridgesupportedonlaminatedrubberbearings |