Download AASHTO guide specifications for LRFD seismic bridge design by Roy A Imbsen; American Association of State Highway and PDF

By Roy A Imbsen; American Association of State Highway and Transportation Officials. Subcommittee on Bridges and Structures

This booklet covers seismic layout for average bridge forms and applies to non-critical and non-essential bridges. it's licensed as another to the seismic provisions within the AASHTO LRFD Bridge layout Specifications. This differs from the present approaches within the LRFD Specifications within the use of displacement-based layout systems, rather than the normal force-based R-Factor strategy. It comprises particular tips and observation on earthquake-resisting components and platforms, international layout concepts, call for modeling, ability calculation, and liquefaction results. ability layout tactics underpin the advisor necessities’ method; contains prescriptive detailing for plastic hinging areas and layout necessities for ability safeguard of these components that are supposed to no longer adventure harm.
Included during this digital variation are the 2012 and 2014 meantime Revisions. Following every one bankruptcy the Revisions are pointed out in addition to associated through the whole booklet the place on hand. See the "Interim Revisions" sections for an entire checklist of alterations to every part.
Content:
entrance subject
• meantime Revisions 2012
• Preface
• desk of Contents
Section 1. Introduction
Section 2. Definitions and Notation
Section three. normal 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
References
Appendices

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Extra info for AASHTO guide specifications for LRFD seismic bridge design

Sample text

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. 3-1—Design Using Strategy Type 1 © 2011 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law. 3-2—Permissible Earthquake-Resisting Elements that Require Owner’s Approval © 2011 by the American Association of State Highway and Transportation Officials. All rights reserved. Duplication is a violation of applicable law. 4 The seismic ground shaking hazard shall be characterized using an acceleration response spectrum.

Ground motion maps should be based on a detailed analysis demonstrated to lead to a quantification of ground motion, at a regional scale, that is as accurate or more so as achieved in the national maps. The analysis should include characterization of seismic sources and ground motion that incorporates current scientific knowledge; incorporation of uncertainty in seismic source models, ground motion models, and parameter values used in the analysis; detailed documentation of map development; and detailed peer review as deemed appropriate by the Owner.

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