Performance assessment of multi-column RC bridge bents seismically retrofitted with buckling-restrained braces
The lateral performance of substandard reinforced concrete (RC) bridge bents seismically retrofitted using buckling-restrained braces is assessed using experimentally obtained data and non-linear numerical models. First, expected performance of RC bridge components and a description of substandard h...
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| Veröffentlicht in: | Bulletin of earthquake engineering 2018-05, Vol.16 (5), p.2135-2160 |
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| creator | Bazaez, Ramiro Dusicka, Peter |
| description | The lateral performance of substandard reinforced concrete (RC) bridge bents seismically retrofitted using buckling-restrained braces is assessed using experimentally obtained data and non-linear numerical models. First, expected performance of RC bridge components and a description of substandard highway bridges typically found in the Northwest of the United States is presented. Then, the paper focuses on three major aspects. (1) The comparison of strains recorded from large-scale cyclic experiments to target performance levels found in current seismic retrofit specifications. Strains in concrete and steel are compared to strain limits for operational and life safety performance levels. (2) The development of representative non-linear numerical models based on sub-assemblage tests of buckling restrained braces and tests of retrofitted bents. Numerical models for the RC bridge bents and for the buckling-restrained braces are presented and validated to the experimental results both in terms of the overall behavior as well as the component strain levels. (3) The seismic performance assessment of the validated models using non-linear time history analyses and ground motions from crustal as well as subduction sources. The results from these analyses demonstrate the effectiveness of reducing RC component strains and drift demands on RC Bridge bents retrofitted with buckling-restrained braces to values that allow the bent to not only achieve life-safety performance level, but also operational performance level when the retrofit is explicitly designed using a fuse concept. |
| doi_str_mv | 10.1007/s10518-017-0279-3 |
| format | Article |
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First, expected performance of RC bridge components and a description of substandard highway bridges typically found in the Northwest of the United States is presented. Then, the paper focuses on three major aspects. (1) The comparison of strains recorded from large-scale cyclic experiments to target performance levels found in current seismic retrofit specifications. Strains in concrete and steel are compared to strain limits for operational and life safety performance levels. (2) The development of representative non-linear numerical models based on sub-assemblage tests of buckling restrained braces and tests of retrofitted bents. Numerical models for the RC bridge bents and for the buckling-restrained braces are presented and validated to the experimental results both in terms of the overall behavior as well as the component strain levels. (3) The seismic performance assessment of the validated models using non-linear time history analyses and ground motions from crustal as well as subduction sources. The results from these analyses demonstrate the effectiveness of reducing RC component strains and drift demands on RC Bridge bents retrofitted with buckling-restrained braces to values that allow the bent to not only achieve life-safety performance level, but also operational performance level when the retrofit is explicitly designed using a fuse concept.</description><identifier>ISSN: 1570-761X</identifier><identifier>EISSN: 1573-1456</identifier><identifier>DOI: 10.1007/s10518-017-0279-3</identifier><language>eng</language><publisher>Dordrecht: Springer Netherlands</publisher><subject>Bents ; Buckling ; Civil Engineering ; Earth and Environmental Science ; Earth Sciences ; Environmental Engineering/Biotechnology ; Geophysics/Geodesy ; Geotechnical Engineering & Applied Earth Sciences ; Ground motion ; Highway bridges ; History ; Hydrogeology ; Mathematical models ; Nonlinear analysis ; Numerical models ; Original Research Paper ; Performance assessment ; Performance testing ; Reinforced concrete ; Reinforcement (structures) ; Reinforcing steels ; Retrofitting ; Safety ; Seismic activity ; Seismic engineering ; Seismic response ; Steel ; Structural Geology ; Subduction ; Subduction (geology)</subject><ispartof>Bulletin of earthquake engineering, 2018-05, Vol.16 (5), p.2135-2160</ispartof><rights>Springer Science+Business Media B.V., part of Springer Nature 2017</rights><rights>Bulletin of Earthquake Engineering is a copyright of Springer, (2017). 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First, expected performance of RC bridge components and a description of substandard highway bridges typically found in the Northwest of the United States is presented. Then, the paper focuses on three major aspects. (1) The comparison of strains recorded from large-scale cyclic experiments to target performance levels found in current seismic retrofit specifications. Strains in concrete and steel are compared to strain limits for operational and life safety performance levels. (2) The development of representative non-linear numerical models based on sub-assemblage tests of buckling restrained braces and tests of retrofitted bents. Numerical models for the RC bridge bents and for the buckling-restrained braces are presented and validated to the experimental results both in terms of the overall behavior as well as the component strain levels. (3) The seismic performance assessment of the validated models using non-linear time history analyses and ground motions from crustal as well as subduction sources. The results from these analyses demonstrate the effectiveness of reducing RC component strains and drift demands on RC Bridge bents retrofitted with buckling-restrained braces to values that allow the bent to not only achieve life-safety performance level, but also operational performance level when the retrofit is explicitly designed using a fuse concept.</description><subject>Bents</subject><subject>Buckling</subject><subject>Civil Engineering</subject><subject>Earth and Environmental Science</subject><subject>Earth Sciences</subject><subject>Environmental Engineering/Biotechnology</subject><subject>Geophysics/Geodesy</subject><subject>Geotechnical Engineering & Applied Earth Sciences</subject><subject>Ground motion</subject><subject>Highway bridges</subject><subject>History</subject><subject>Hydrogeology</subject><subject>Mathematical models</subject><subject>Nonlinear analysis</subject><subject>Numerical models</subject><subject>Original Research Paper</subject><subject>Performance assessment</subject><subject>Performance testing</subject><subject>Reinforced concrete</subject><subject>Reinforcement (structures)</subject><subject>Reinforcing steels</subject><subject>Retrofitting</subject><subject>Safety</subject><subject>Seismic activity</subject><subject>Seismic engineering</subject><subject>Seismic response</subject><subject>Steel</subject><subject>Structural Geology</subject><subject>Subduction</subject><subject>Subduction (geology)</subject><issn>1570-761X</issn><issn>1573-1456</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2018</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><recordid>eNp1kE1LxDAQhoMouK7-AG8Bz9FMkzTdoyx-wYIiCt5CmiZr1jZdkxTZf2_XevDiaQbejxkehM6BXgKl8ioBFVARCpLQQi4IO0AzEJIR4KI8_NkpkSW8HaOTlDaUFkIu6AyFJxtdHzsdjMU6JZtSZ0PGvcPd0GZPTN8OXcDPS1xH36wtrkc54WR96rzRbbvD0ebYO5-zbfCXz--4HsxH68OaRJty1D6MQh21sekUHTndJnv2O-fo9fbmZXlPVo93D8vrFTEMykyEq5q65q7hTdmUhaB1WQnreMGZNA1jRgtaOAAOUlaF4I5pJqirjZUA1C7YHF1MvdvYfw7jF2rTDzGMJxUsJOWSi7FrjmBymdinFK1T2-g7HXcKqNpjVRNWNWJVe6yKjZliyqTRG9Y2_mn-N_QNnWl8eA</recordid><startdate>20180501</startdate><enddate>20180501</enddate><creator>Bazaez, Ramiro</creator><creator>Dusicka, Peter</creator><general>Springer Netherlands</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>3V.</scope><scope>7ST</scope><scope>7TG</scope><scope>7TN</scope><scope>7UA</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>C1K</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>M2P</scope><scope>M7S</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>SOI</scope><orcidid>https://orcid.org/0000-0002-5008-0884</orcidid></search><sort><creationdate>20180501</creationdate><title>Performance assessment of multi-column RC bridge bents seismically retrofitted with buckling-restrained braces</title><author>Bazaez, Ramiro ; Dusicka, Peter</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c316t-5f8dbb4fd4d6d6250b685ef42437cd33ca502f1141778254f3a350fbce7110e93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2018</creationdate><topic>Bents</topic><topic>Buckling</topic><topic>Civil Engineering</topic><topic>Earth and Environmental Science</topic><topic>Earth Sciences</topic><topic>Environmental Engineering/Biotechnology</topic><topic>Geophysics/Geodesy</topic><topic>Geotechnical Engineering & Applied Earth Sciences</topic><topic>Ground motion</topic><topic>Highway bridges</topic><topic>History</topic><topic>Hydrogeology</topic><topic>Mathematical models</topic><topic>Nonlinear analysis</topic><topic>Numerical models</topic><topic>Original Research Paper</topic><topic>Performance assessment</topic><topic>Performance testing</topic><topic>Reinforced concrete</topic><topic>Reinforcement (structures)</topic><topic>Reinforcing steels</topic><topic>Retrofitting</topic><topic>Safety</topic><topic>Seismic activity</topic><topic>Seismic engineering</topic><topic>Seismic response</topic><topic>Steel</topic><topic>Structural Geology</topic><topic>Subduction</topic><topic>Subduction (geology)</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bazaez, Ramiro</creatorcontrib><creatorcontrib>Dusicka, Peter</creatorcontrib><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Environment Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Water Resources Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>ProQuest Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>Environmental Sciences and Pollution Management</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>ProQuest Science Journals</collection><collection>ProQuest Engineering Database</collection><collection>Environmental Science Database</collection><collection>ProQuest Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering collection</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>Environment Abstracts</collection><jtitle>Bulletin of earthquake engineering</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bazaez, Ramiro</au><au>Dusicka, Peter</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Performance assessment of multi-column RC bridge bents seismically retrofitted with buckling-restrained braces</atitle><jtitle>Bulletin of earthquake engineering</jtitle><stitle>Bull Earthquake Eng</stitle><date>2018-05-01</date><risdate>2018</risdate><volume>16</volume><issue>5</issue><spage>2135</spage><epage>2160</epage><pages>2135-2160</pages><issn>1570-761X</issn><eissn>1573-1456</eissn><abstract>The lateral performance of substandard reinforced concrete (RC) bridge bents seismically retrofitted using buckling-restrained braces is assessed using experimentally obtained data and non-linear numerical models. First, expected performance of RC bridge components and a description of substandard highway bridges typically found in the Northwest of the United States is presented. Then, the paper focuses on three major aspects. (1) The comparison of strains recorded from large-scale cyclic experiments to target performance levels found in current seismic retrofit specifications. Strains in concrete and steel are compared to strain limits for operational and life safety performance levels. (2) The development of representative non-linear numerical models based on sub-assemblage tests of buckling restrained braces and tests of retrofitted bents. Numerical models for the RC bridge bents and for the buckling-restrained braces are presented and validated to the experimental results both in terms of the overall behavior as well as the component strain levels. (3) The seismic performance assessment of the validated models using non-linear time history analyses and ground motions from crustal as well as subduction sources. The results from these analyses demonstrate the effectiveness of reducing RC component strains and drift demands on RC Bridge bents retrofitted with buckling-restrained braces to values that allow the bent to not only achieve life-safety performance level, but also operational performance level when the retrofit is explicitly designed using a fuse concept.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><doi>10.1007/s10518-017-0279-3</doi><tpages>26</tpages><orcidid>https://orcid.org/0000-0002-5008-0884</orcidid></addata></record> |
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| subjects | Bents Buckling Civil Engineering Earth and Environmental Science Earth Sciences Environmental Engineering/Biotechnology Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Ground motion Highway bridges History Hydrogeology Mathematical models Nonlinear analysis Numerical models Original Research Paper Performance assessment Performance testing Reinforced concrete Reinforcement (structures) Reinforcing steels Retrofitting Safety Seismic activity Seismic engineering Seismic response Steel Structural Geology Subduction Subduction (geology) |
| title | Performance assessment of multi-column RC bridge bents seismically retrofitted with buckling-restrained braces |
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