Expected seismic performance of irregular medium-span simply supported bridges on soft and hard soils
•Irregular bridges subjected to ground strong motions.•Damage indices of piers with irregular height.•Demand concentration in short piers.•Seismic vulnerability of bridges on hard and soft soils.•Damage limit states of irregular bridges. This paper presents the parametric study of irregular RC bridg...
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Published in | Engineering structures Vol. 98; pp. 174 - 185 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
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Elsevier Ltd
01.09.2015
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Abstract | •Irregular bridges subjected to ground strong motions.•Damage indices of piers with irregular height.•Demand concentration in short piers.•Seismic vulnerability of bridges on hard and soft soils.•Damage limit states of irregular bridges.
This paper presents the parametric study of irregular RC bridge structures subjected to strong seismic records. We determine the expected damages and the concentration demands on short piers of bridges with columns of unequal height located on soft and rigid soil sites. Medium length span bridges are analyzed using the most common structural configurations built in many countries with several height pier configurations. The structures were subjected to strong seismic ground motions recorded on soft and hard soils of earthquakes generated at subduction seismic sources. The parameters of interest in the study are the strength and stiffness characteristics of the substructure and the influence of the dynamic characteristics of the seismic records. The parameter combinations produced more than three hundred 3D non-linear time history analyses conducted with the Perform-3D software. Based on the evaluation of damages indexes, we determine the pier expected damages and the importance of the soil type, on the behavior of irregular pier bridge substructures. It is also quantified the impact of the pier configuration in the global behavior of the bridges and the influence of the shortest pier in the expected damages of the other piers. In most of the cases, the piers adjacent to the tallest piers of the bridge were the elements more affected by the irregularity. |
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AbstractList | •Irregular bridges subjected to ground strong motions.•Damage indices of piers with irregular height.•Demand concentration in short piers.•Seismic vulnerability of bridges on hard and soft soils.•Damage limit states of irregular bridges.
This paper presents the parametric study of irregular RC bridge structures subjected to strong seismic records. We determine the expected damages and the concentration demands on short piers of bridges with columns of unequal height located on soft and rigid soil sites. Medium length span bridges are analyzed using the most common structural configurations built in many countries with several height pier configurations. The structures were subjected to strong seismic ground motions recorded on soft and hard soils of earthquakes generated at subduction seismic sources. The parameters of interest in the study are the strength and stiffness characteristics of the substructure and the influence of the dynamic characteristics of the seismic records. The parameter combinations produced more than three hundred 3D non-linear time history analyses conducted with the Perform-3D software. Based on the evaluation of damages indexes, we determine the pier expected damages and the importance of the soil type, on the behavior of irregular pier bridge substructures. It is also quantified the impact of the pier configuration in the global behavior of the bridges and the influence of the shortest pier in the expected damages of the other piers. In most of the cases, the piers adjacent to the tallest piers of the bridge were the elements more affected by the irregularity. |
Author | Reynoso, J.R. Olmos, B.A. Jara, J.M. Jara, M. |
Author_xml | – sequence: 1 givenname: J.M. surname: Jara fullname: Jara, J.M. email: jmjara70@gmail.com – sequence: 2 givenname: J.R. surname: Reynoso fullname: Reynoso, J.R. – sequence: 3 givenname: B.A. surname: Olmos fullname: Olmos, B.A. – sequence: 4 givenname: M. surname: Jara fullname: Jara, M. |
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CitedBy_id | crossref_primary_10_1016_j_engstruct_2024_118362 crossref_primary_10_1080_15732479_2018_1434209 crossref_primary_10_1680_jstbu_17_00081 crossref_primary_10_1680_jstbu_18_00222 crossref_primary_10_1080_23311916_2018_1545741 crossref_primary_10_1016_j_istruc_2022_08_112 crossref_primary_10_1016_j_soildyn_2022_107678 crossref_primary_10_1016_j_engstruct_2017_03_017 crossref_primary_10_1080_15732479_2020_1842467 crossref_primary_10_1007_s12205_024_1464_y crossref_primary_10_1016_j_soildyn_2018_11_006 |
Cites_doi | 10.1007/s11803-008-1005-6 10.1061/(ASCE)0733-9445(2007)133:9(1316) 10.1016/S0141-0296(02)00068-8 10.1061/(ASCE)0733-9445(1985)111:4(740) 10.1080/15732479.2011.576255 10.1002/eqe.291 10.1002/eqe.535 10.1080/15732471003653017 10.1002/eqe.4290221003 10.1007/s10518-012-9398-z |
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Keywords | Bridges on hard and soft soil conditions Pier irregularity Damage index Seismic response of irregular bridges |
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SubjectTerms | Bridges on hard and soft soil conditions Damage index Pier irregularity Seismic response of irregular bridges |
Title | Expected seismic performance of irregular medium-span simply supported bridges on soft and hard soils |
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