Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion
AbstractAccording to the research fruits of the diverse damages of bridge in the past, bearings' invalidation is the main reason of the damage of isolated bridges and causes oversized relative displacements between pier and girder. Eventually, it may lead to severe collision of superstructure....
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Marcílio Alves
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| Series: | Latin American Journal of Solids and Structures |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015000701397&lng=en&tlng=en |
| _version_ | 1828791635784237056 |
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| author | Kang Gao Wancheng Yuan Sasa Cao Yutao Pang |
| author_facet | Kang Gao Wancheng Yuan Sasa Cao Yutao Pang |
| author_sort | Kang Gao |
| collection | DOAJ |
| description | AbstractAccording to the research fruits of the diverse damages of bridge in the past, bearings' invalidation is the main reason of the damage of isolated bridges and causes oversized relative displacements between pier and girder. Eventually, it may lead to severe collision of superstructure. It is extremely dangerous when near-fault motion occurs, because it has obvious velocity pulse effect and increases the risk of colliding between girders. Aiming at this problem, this paper puts forward a device named cable-sliding modular expansion joints (CMEJs) that can control the relative displacement and avoid collision. The working principle and mechanical model are described, and then based on a triple continuous seismic isolation bridge which has different heights of piers, a 3D model with or without CMEJs is established. The responses of continuous beam bridges using the CMEJs are comprehensively inspected under the consideration of the velocity pulse effect, and then a real simulation of limit performance of CMEJs is made, focused on CMEJs' restraining effect. The calculation shows that velocity pulse effect would magnify the seismic response of isolation bridges. In addition, the device can well control the displacement and prevent collisions. And the isolation technology combined with CMEJs can be more effective to play their respective roles. The advantage in controlling displacement is obvious. |
| first_indexed | 2024-12-12T02:54:32Z |
| format | Article |
| id | doaj.art-3aa0ca40d1d04f9ebf99318bee4dfca6 |
| institution | Directory Open Access Journal |
| issn | 1679-7825 |
| language | English |
| last_indexed | 2024-12-12T02:54:32Z |
| publisher | Marcílio Alves |
| record_format | Article |
| series | Latin American Journal of Solids and Structures |
| spelling | doaj.art-3aa0ca40d1d04f9ebf99318bee4dfca62022-12-22T00:40:48ZengMarcílio AlvesLatin American Journal of Solids and Structures1679-78251271397141410.1590/1679-78251486S1679-78252015000701397Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground MotionKang GaoWancheng YuanSasa CaoYutao PangAbstractAccording to the research fruits of the diverse damages of bridge in the past, bearings' invalidation is the main reason of the damage of isolated bridges and causes oversized relative displacements between pier and girder. Eventually, it may lead to severe collision of superstructure. It is extremely dangerous when near-fault motion occurs, because it has obvious velocity pulse effect and increases the risk of colliding between girders. Aiming at this problem, this paper puts forward a device named cable-sliding modular expansion joints (CMEJs) that can control the relative displacement and avoid collision. The working principle and mechanical model are described, and then based on a triple continuous seismic isolation bridge which has different heights of piers, a 3D model with or without CMEJs is established. The responses of continuous beam bridges using the CMEJs are comprehensively inspected under the consideration of the velocity pulse effect, and then a real simulation of limit performance of CMEJs is made, focused on CMEJs' restraining effect. The calculation shows that velocity pulse effect would magnify the seismic response of isolation bridges. In addition, the device can well control the displacement and prevent collisions. And the isolation technology combined with CMEJs can be more effective to play their respective roles. The advantage in controlling displacement is obvious.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015000701397&lng=en&tlng=ennear-fault ground motion, the effect in limiting relative displacementcable-sliding modular expansion joints (CMEJs), seismic isolation bridge, velocity pulse effect |
| spellingShingle | Kang Gao Wancheng Yuan Sasa Cao Yutao Pang Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion Latin American Journal of Solids and Structures near-fault ground motion, the effect in limiting relative displacement cable-sliding modular expansion joints (CMEJs), seismic isolation bridge, velocity pulse effect |
| title | Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion |
| title_full | Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion |
| title_fullStr | Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion |
| title_full_unstemmed | Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion |
| title_short | Seismic Performance of Cable-sliding Modular Expansion Joints Subject to Near-fault Ground Motion |
| title_sort | seismic performance of cable sliding modular expansion joints subject to near fault ground motion |
| topic | near-fault ground motion, the effect in limiting relative displacement cable-sliding modular expansion joints (CMEJs), seismic isolation bridge, velocity pulse effect |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252015000701397&lng=en&tlng=en |
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