By Roy A Imbsen; American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures
This publication covers seismic layout for usual bridge kinds and applies to non-critical and non-essential bridges. it really is licensed as another to the seismic provisions within the AASHTO LRFD Bridge layout Specifications. This differs from the present strategies within the LRFD Specifications within the use of displacement-based layout tactics, rather than the conventional force-based R-Factor procedure. It contains specific counsel and observation on earthquake-resisting components and platforms, international layout innovations, call for modeling, ability calculation, and liquefaction results. capability layout methods underpin the consultant necessities’ technique; comprises prescriptive detailing for plastic hinging areas and layout necessities for capability security of these components that are meant to now not adventure harm.
Included during this digital variation are the 2012 and 2014 period in-between Revisions. Following each one bankruptcy the Revisions are pointed out in addition to associated during the whole booklet the place to be had. See the "Interim Revisions" sections for a whole record of adjustments to every part.
intervening time Revisions 2012
desk of Contents
Section 1. Introduction
Section 2. Definitions and Notation
Section three. common Requirements
Section four. research and layout Requirements
Section five. Analytical versions and Procedures
Section 6. origin and Abutment Design
Section 7. Structural metal Components
Section eight. bolstered Concrete Components
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Additional info for AASHTO guide specifications for LRFD seismic bridge design
Duplication is a violation of applicable law. 2-sec (Ss) with Seven Percent Probability of Exceedance in 75 yr (Approx. 1000-yr Return Period) and Five Percent Critical Damping © 2011 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law.
These ground motion hazard maps depict probabilistic ground motion and spectral response for seven percent probability of exceedance in 75 yr. 2. 2) can be used to account for local site effects. Site-specific procedures consist of a site-specific hazard analysis, a site-specific ground motion response analysis, or both. 2 is desired. x Information about one or more active seismic sources for the site has become available since the development of the 2002 USGS data that were used to develop the 2006 USGS/AASHTO Seismic Hazard Maps, and the new seismic source information will result in a significant change of the seismic hazard at the site.
Duplication is a violation of applicable law. 1-5a— Horizontal Peak Ground Acceleration Coefficient for Region 1 (PGA) with Seven Percent Probability of Exceedance in 75 yr (Approx. 1000-yr Return Period) © 2011 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law. 1- 5b— Horizontal Peak Ground Acceleration Coefficient for Region 1 (PGA) with Seven Percent Probability of Exceedance in 75 yr (Approx. 1000-yr Return Period) © 2011 by the American Association of State Highway and Transportation Officials.
AASHTO guide specifications for LRFD seismic bridge design by Roy A Imbsen; American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures