Download PDF by Roy A Imbsen; American Association of State Highway and: 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

ISBN-10: 1560513969

ISBN-13: 9781560513964

This ebook covers seismic layout for usual bridge varieties and applies to non-critical and non-essential bridges. it truly is licensed as another to the seismic provisions within the AASHTO LRFD Bridge layout Specifications. This differs from the present techniques within the LRFD Specifications within the use of displacement-based layout strategies, rather than the normal force-based R-Factor technique. It contains specified suggestions and observation on earthquake-resisting parts and structures, worldwide layout suggestions, call for modeling, ability calculation, and liquefaction results. potential layout approaches underpin the consultant necessities’ technique; comprises prescriptive detailing for plastic hinging areas and layout necessities for potential defense of these parts 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 through the complete booklet the place on hand. See the "Interim Revisions" sections for an entire record of alterations to every part.
Content:
entrance topic
• 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. beginning and Abutment Design
Section 7. Structural metal Components
Section eight. strengthened Concrete Components
References
Appendices

Show description

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

ISBN-10: 1560513969

ISBN-13: 9781560513964

This ebook covers seismic layout for usual bridge varieties and applies to non-critical and non-essential bridges. it truly is licensed as another to the seismic provisions within the AASHTO LRFD Bridge layout Specifications. This differs from the present techniques within the LRFD Specifications within the use of displacement-based layout strategies, rather than the normal force-based R-Factor technique. It contains specified suggestions and observation on earthquake-resisting parts and structures, worldwide layout suggestions, call for modeling, ability calculation, and liquefaction results. potential layout approaches underpin the consultant necessities’ technique; comprises prescriptive detailing for plastic hinging areas and layout necessities for potential defense of these parts 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 through the complete booklet the place on hand. See the "Interim Revisions" sections for an entire record of alterations to every part.
Content:
entrance topic
• 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. beginning and Abutment Design
Section 7. Structural metal Components
Section eight. strengthened Concrete Components
References
Appendices

Show description

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Extra info for AASHTO guide specifications for LRFD seismic bridge design

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Duplication is a violation of applicable law. 2-sec (Ss) with Seven Percent Probability of Exceedance in 75 yr (Approx. 1000yr 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. 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.

Duplication is a violation of applicable law. 1-2b—Horizontal Peak Ground Acceleration Coefficient for the Conterminous United States (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. 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.

The software error will likely have negligible effects on bridge analysis results because: • Fpga is approximately equal to Fa, • As is properly calculated and displayed in the tabulated design spectra, and • Bridges have fundamental periods greater than the effected period range (T < To). In lieu of using national ground motion maps referenced in these Guide Specifications, ground motion response spectra may be constructed on the basis of approved state ground motion maps. 1-1—Design Response Spectrum, Construction Using Three-Point Method Design earthquake response spectral acceleration coefficients for the acceleration coefficient, AS, the short period acceleration coefficient, SDS, and at the 1-sec period acceleration coefficient, SD1, shall be determined from Eqs.

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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


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