Federal highway administration fhwa 2006 seismic retrofitting manual for highway structures. Seismic rectrofitting guidlines for complex steel truss highway bridges preface this manual, entitled seismic retrofitting guidelines for complex steel truss highway bridges referred to as guidelines in this document, collects and summarizes the stateofthepractice, up to 2005, for retrofitting steel truss bridges on the highway system within the united states. Inelastic structural analysis of reinforcedconcrete and. Part 1 bridges, which present the most current advances in retrofitting and earthquake engineering techniques. In 1995, fhwa updated these manuals with current knowledge and practical technology in the seismic retrofitting manual for highway bridges fhwa rd94052, mentioned earlier. Federal highway administrations seismic retrofitting manual for highway structures. The 2006 fhwa seismic retrofitting manual for highway structures part ibridges adopted the pushover analysis for bridges in seismic retrofit categories c and d, to assess bridge seismic capacity. The guidelines cover all major aspects pertinent to the seismic retrofitting of steel truss bridges, with a focus on superstructure retrofit. A comparative study of bridge damage due to the wenchuan. Seismic design of bridges nysdot policy and practices. Design guides, the following are included in the download. Seismic retrofittingggy manual for highway bridges fhwa report 94052 2006.
Bridges, developed by mceer, to be published by the federal highway. This manual, entitled seismic retrofitting guidelines for complex steel truss highway bridges referred to as guidelines in this document, collects and summarizes the stateofthepractice, up to 2005, for retrofitting steel truss bridges on the highway system within the united states. Fhwa 2006 br 15 compilation and evaluation of results from high. Seismic retrofitting of highway bridges is one of the most common approaches undertaken by state. Desroches, r, delemont, m 2002 seismic retrofit of simply supported bridges using shape memory alloys. Fhwa seismic virtual team the fhwa geotechnical team is actively involved in the fhwa seismic virtual team. Seismic retrofitting manuals for highway bridges 1983. Fhwa 2006 seismic retrofitting manual for highway structures. Gap width is the perpendicular distance between the. A new fhwa manual entitled seismic retrofitting manual for highway structures. Seismic rectrofitting guidlines for complex steel truss.
Part 1 bridges fhwa january 2006 part 1 of this report focuses on highway bridges and is a replacement for the fhwa publication seismic retrofitting manual for highway bridges, published in 1995 as report fhward94052. The results of the control and retrofitted specimens will be compared with fhwahrt0603 seismic retrofitting manual for highway structures. Fhwamceer 2006 seismic retrofitting manual for highway structures. May 29, 20 federal highway administration fhwa, 2006. Bridges, developed by mceer, to be published by the. A manual for the performancebased seismic retrofitting of. It also was developed by mceer with the sponsorship of fhwa. Fhwa seismic retrofitting guidelines for complex steel truss highway bridges, 2006. Seismic retrofitting manual for highway structures part 1 bridges preface this report is a major revision of the federal highway administration publication seismic retrofitting manual for highway bridges, which was published in 1995 as report fhwa rd94052. Seismic retrofitting manual for highway structures ebook. However, because of the newly adopted lrfd guide specifications for the seismic design of highway bridges prepared by roy imbsen by the aashto highway subcommittee on bridges and structures and the publication of 2006 edition of the seismic retrofitting manual for highway structures. In 2006, fhwa issued the final products of this research, seismic retrofitting manual of highway structures part i bridges fhwa hrt06032 and part ii retaining structures, slopes, tunnels, culverts, and roadways fhwa hrt05067. Part 2 retaining structures, slopes, tunnels, culverts and roadways, august 2004, publication fhwa hrt05067.
Seismic retrofitting guidelines for complex steel truss highway bridges, august 2006, publication mceer06sp05. Seismic retrofitting manual for highway structures fhwa report part 1. University for the federal highway administration as part of a study entitled effects of sediment gradation and cohesion on. Part 1 of this manual is based on previous federal highway administration fhwa publications on this subject including seismic retrofitting manual for highway bridges, published in 1995 as report fhwa rd94052. Part 1 of this manual focuses on highway bridges, and is a replacement for the federal highway administration fhwa publication seismic retrofitting manual for highway bridges which was published in 1995 as report fhward94052. Giardini d et al 20 seismic hazard harmonization in europe share. The federal highway administration fhwa has developed seismic vulnerability rating systems for bridge inventories, with the most recent version being the seismic retrofitting manual for highway structures. Terminology and philosophy fhwa seismic retrofit manual dual level ground motions 100 and yr.
Part 1 of this manual focuses on highway bridges, and is a replacement for the federal highway administration fhwa publication seismic retrofitting manual. Seismic retrofitting manual for highway bridges 2006. This manual is a guide to the seismic design of bridges. Introduction it has been common practice to design new bridges and buildings for a singlelevel of earthquake ground motion. This manual, which is comprised of two parts, represents the most current stateofpractice in assessing the vulnerability of highway structures to the effects of earthquakes, and implementing retrofit measures to improve performance. Part 1 bridges, january 2006, publication fhwahrt06032. Fhwahrt06032, federal highway administration, us department of transportation, mclean, va.
What is the minimum factor of safety against liquefaction. Federal highway administration, us department of transportation, mclean, va. Ian buckle, ian friedland, john mander, geoffrey martin, richard nutt and maurice power, 2006, seismic retrofitting manual for highway structures. Performancebased seismic loss assessment of isolated. Part 1 of this manual focuses on highway bridges, and is a replacement for the federal highway administration fhwa publication seismic. Part 1 bridges 2006 will be referenced in the lectures. In 2006 the federal highway administration fhwa published a major revision to the seismic retrofitting manual for highway bridges, published ten years ago in. Part 2 retaining structures, slopes, tunnels, culverts and roadways covid19 information updated 4172020 latest updates on ubs response to covid19. As a result, a new seismic retrofitting manual, consisting of two parts bridges and other highway structures, was completed and published.
Past deputy director, national center for earthquake engineering research, suny buffalo. Part 2 of this manual provides guidance on the assessment and retrofitting of other tyical highway structures, including retaining walls, engineered slopes and embarkments, tunnels, culverts, and pavement. Part 1 bridges fhwa 2006 which is a replacement for fhwa 1995 contains preliminary screening process, identifying and prioritization procedures for bridges that need to be evaluated for seismic retrofitting. Fhwa seismic retrofitting manual for highway structures part 1 bridges free ebook download as pdf file. Part 1 bridges 2006 and aashto guide specifications. This manual collects and summarizes the stateoftheart practice to date, for retrofitting steel truss bridges on the highway system within the united states. Seismic retrofitting manual for highway structures part 1 bridges ian g. Part 2 retaining structures, slopes, tunnels, culverts and roadways, august 2004, publication fhwahrt05067. Part 1 bridges fhwa january 2006 part 1 of this report focuses on highway bridges and is a replacement for the fhwa publication seismic retrofitting manual for highway bridges, published in 1995 as report fhwa rd94052. Highway structures, which became the major documentation used to develop recommendations for the seismic design of new bridges.
National highway institute national highway institute. Part 2 retaining structures, slopes, tunnels, culverts and roadways. Also published as special publication, mceer06sp10, multidisciplinary center for earthquake engineering research, buffalo ny. Performancebased seismic loss assessment of isolated simply. September 2017 the fhwa seismic retrofitting manual for highway structures. Part 1 bridges this manual, which is comprised of two parts, represents the most current stateofpractice in assessing the vulnerability of highway structures to the effects of earthquakes, and implementing retrofit measures to improve performance.
Revisions have been made to include current advances in earthquake. An external restraining system for the seismic retrofit of existing bridges. This report is the first of a two part publication entitled seismic retrofitting manual for highway structures. The popularity of pushover analysis is mainly due to its ability to identify the failure modes of bridge piers and provide the progressive collapse sequence of damaged bridges when. At the start of the project, geotechnical information from the original construction soil borings was gathered. Retrofit of existing bridges existing bridges, programmed for rehabilitation shall be evaluated for seismic vulnerability. Gasparini p, manfredi g, zschau j eds 2007 earthquake early warning systems. It is based on a previous edition of the manual, but updated with information on recent seismic research and professional practice.
An external restraining system for the seismic retrofit of. These guidelines are a supplement to the 2006 fhwa seismic retrofitting manual for highway structures for. Part 1 bridges, office of infrastructure research and development, office of infrastructure research and development, fhwahrt06032. Part 1 bridges covid19 information updated 4172020 latest updates on ubs response to covid19. These guidelines are a supplement to the 2006 fhwa seismic retrofitting manual for highway structures for unusual or long span steel trusses. Proposed framework for the performancebased seismic design of highway bridges. Aashto subcommittee on bridges and structures aashto br 15 aashto maintenance manual the maintenance and management of roadways and bridges this manual is intended for those early in their careers to help them understand the processes, methods and materials applied to maintain bridge and highway systems. Nov 11, 2014 this manual, entitled seismic retrofitting guidelines for complex steel truss highway bridges referred to as guidelines in this document, collects and summarizes the stateofthepractice, up to 2005, for retrofitting steel truss bridges on the highway system within the united states. There are various types of seismic isolation bearings, most of which are proprietary. Seismic retrofitting manual for highway structures. Retrofit of rectangular bridge columns using cfrp wrapping. In 2006 the federal highway administration fhwa published a major revision to the seismic retrofitting manual for highway bridges, published ten years ago in 1995 fhwa, 1995. Major contributor to the american association of state highway transportation officials lrfd specifications for highway bridges and the fhwa seismic retrofitting manual for highway bridges.
Part 1 bridges, january 2006, publication fhwa hrt06032. This new edition expanded the coverage of the previous publication by including procedures for evaluating and retrofitting retaining structures, slopes. It presents the basic principles of seismology, structural dynamics and structural form as they relate to highway bridge structures. Available through the national technical information service, 2006. For the evaluation and upgrading conventional bridges, fhwa s seismic retrofitting manual for highway structures. Part 1 of this manual is based on previous federal highway administration fhwa publications on this subject including seismic retrofitting manual for highway bridges, published in 1995 as report fhward94052. Montana local technical assistance program publications list. Seismic retrofitting guidelines for highway bridgg p es fhwa report 83007 1995. Parametric study of medium span bridges retrofitted with. As a key difference from fhwas guidelines, criteria for selecting earthquake ground motions are based on bridge anticipated service life. Part 2 of this manual provides guidance on the assessment and retrofitting of other tyical highway structures.
Fhwa seismic hazard mitigation program for highway bridges. Buckle lead author, ian friedland, john mander, geoffrey martin, richard nutt and maurice power. Seismic retrofitting manual for highway structures part 1. This manual is a synthesis of the previous manuals and the recent results from research and lesions learned from postearthquake investigations. Retaining structures, slopes, tunnels, culverts and roadways. Aashto subcommittee on bridges and structures aashto br 15 aashto maintenance manual the maintenance and management of roadways. Seismic fragility and lifecycle loss both direct and indirect assessments are analytically performed on an isolated simplysupported highway bridge retrofitted by four types of shape memory alloy restrainers i. Seismic design recommendations university transportation.
Pdf proposed framework for the performancebased seismic. Consultant resources illinois department of transportation. May 29, 20 seismic retrofitting manual for highway structures. Enhancing resilience of highway bridges through seismic retrofit. Pdf fhwa seismic retrofitting of highway truss bridges. Jun 28, 2009 fhwa 2006, seismic retrofitting manual for highway structures.
Part 2 of this manual provides guidance on the assessment and retrofitting of other typical highway structures, including retaining walls, engineered slopes and embankments, tunnels, culverts, and pavement. Fhwa manual recommends selecting the ul ground motion to be a year return period. Federal highway administration, office of research, development and technology, turnerfairbank highway research center. Bridge design wg11 of the european association for. The manual is titled, seismic retrofitting manual for highway structures, and is contained in two volumes as follows. Part 1 bridges, office of infrastructure research and development, office of infrastructure research and development, fhwahrt06032, january 2006. These guidelines are based on and are supplementary to the seismic retrofitting manual for highway structures part 1. Part 2 of this manual provides guidance on the assessment and retrofitting of other typical highway structures, including retaining walls, engineered.
Then, also as mentioned earlier, fhwa published seismic retrofitting manual of highway structures part i and part ii. Part 2 of this manual provides guidance on the assessment and retrofitting of other tyical highway structures, including retaining walls, engineered. Seismic retrofitting guidelines for complex steel truss. It extends the guidance provided in the earlier federal highway administration fhwa manuals originally issued 1983 and updated in 1995, based on recent experiences in california, japan, and other countries, as well as the results of comprehensive research programs that have been sponsored by fhwa, mceer, caltrans, and other agencies. Vulnerability rating the purpose of this step is to provide a uniform measure of a structures vulnerability to failure. What is the minimum factor of safety against liquefaction to ensure that no mitigation measures are required. Fhwa seismic retrofitting manual for highway structures. For the evaluation and upgrading conventional bridges, fhwas seismic retrofitting manual for highway structures. Past deputy vicechancellor research, university of auckland. The assessment of highway bridges and structures, design manual. Whereas part 1 maintains the basic format of the retrofitting process.
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