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.
meantime Revisions 2012
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
Read or Download AASHTO guide specifications for LRFD seismic bridge design PDF
Best civil & environmental books
This interesting new ebook examines the problems of earthquake geotechnical engineering in a finished manner. It summarizes the current wisdom on earthquake dangers and their causative mechanisms in addition to a couple of different correct themes. info bought from earthquake harm research (such as flooring movement, landslides, earth strain, fault motion, or liquefaction) in addition to info from laboratory assessments and box research is provided, including exercises/questions.
This e-book offers an in depth precis of bridge rather a lot from a world point of view. The authors conceal all features from the method in the back of the calculation of bridge lots and the complicated interactions among quite a bit and bridges, to financial issues. quite a lot of bridge lots are coated, together with road motor vehicle a lot, pedestrian rather a lot, railing a lot and wind lots.
Offers with formation and improvement of floor, compaction, drainage equipment, and extra.
- Reliability and Optimization of Structural Systems
- Fireground strategies
- Piles in Weak Rock
- Volcanic Rocks and Soils
Extra info for AASHTO guide specifications for LRFD seismic bridge design
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.