Seismic design of bridges
SEISMIC DESIGN AND RETROFIT OF BRIDGES - Wiley
1 Seismic Design Philosophy for Bridges 1 1.1 Introduction, 1 1.2 Damage to Bridges in Recent Earthquakes, 3 1.2.1 Seismic Displacements, 5 (a) Span Failures Due to Unseating at Movement Joints, 5 (b) Amplification of Displacements Due to Soils Effects, 5 ( c) Pounding of Bridge Structures, 8 1.2.2 Abutment Slumping, 9
[PDF File]Seismic Isolation of Highway Bridges
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the seismic forces and displacements transmitted from the superstructure to the substructures. More than 200 bridges have been designed or retrofitted in the United States using seismic isolation in the last 20 years, and more than a thousand bridges around the world now use this cost- effective technique for seismic protection.
[PDF File]SEISMIC ANALYSIS AND DESIGN OF BRIDGES ACCORDING TO EC8-2 ...
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Protection of Bridges (AFPS, 1995), this new regulation framework enables to take advantage of latest scientific and technological advances in seismic design and analysis of structures, such as probabilistic seismic hazard evaluation, non-linear structural analysis and anti-seismic devices use.
[PDF File]Seismic Design of Bridges NYSDOT Policy and Practices
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Seismic Design Policy Seismic design shall be in accordance with the provisions NYSDOT LRFD Specifications Seismic design in accordance with the provisions given in the AASHTO Guide Specifications for LRFD Seismic Bridge Design can be used with the approval of Deputy Chief Engineer (Structures)
[PDF File]CALTRANS SEISMIC DESIGN SPECIFICATIONS FOR STEEL BRIDGES
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Northridge earthquake. A displacement-based document, Caltrans Seismic Design Criteria (SDC), Version 1.1, which focused mainly on typical new concrete bridges, was published in July 1999he Caltrans Guide . T Specifications for Seismic Design of Steel Bridges (Guide), the first edition, was published in December 2001.
[PDF File]SEISMIC ISOLATION DESIGN EXAMPLES OF HIGHWAY BRIDGES
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EXECUTIVE SUMMARY Today about 200 bridges have been designed and constructed in the U.S. using the AASHTO Guide Specifications for Seismic Isolation Design (AASHTO, 2010) but this figure is a fraction of the potential number of applications and falls far short of the number of isolated bridges in other countries.
[PDF File]GUIDELINES FOR SEISMIC DESIGN OF ROAD BRIDGES
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6.3 Seismic Design Aspects 41 6.4 Design Provisions 42 6.5 Long span bridges 44 6.6 Special Types of Bridges 44 Chapter-7 Seismic Design Method 45 7.1 General 45 7.2 Force Based Design Method 45 7.3 Capacity Design 46 7.4 Structural components to be designed on the basis of capacity design 51 7.5 Design of Concrete Sections with Ductile ...
[PDF File]SEISMIC DESIGN AND RETROFIT OF BRIDGES
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Seminar on Seismic Design and Retrofit of Bridges deck and the new edge girder. Construction of the integral edge girder where the columns are located away from the edge of the roadway (i.e.• in an outrigger configuration) or where the roadway is highly curved results in considerable added mass. Expected Plastic Collapse Mechanism.
[PDF File]Performance‐Based Seismic Bridge Design
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Performance‐Based Seismic Bridge Design ... Essential Bridges •Open to emergency vehicles after 1000‐yr event Other Bridges •No collapse, significant damage, disruption in service Spec 3.10.1 and Commentary C3.10.5. Seismic Design Options ‐AASHTO Performance ...
[PDF File]AASHTO LRFD Guide Specifications for Seismic Design of ...
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Background Seismic Hazard Normal Bridges (1.1) ♦ An appropriate method to design adequate seat width(s) considering out of phase motion. ♦ An appropriate method to design the ductile substructure components without undue conservatism Two distinctly different aspects of the design process need to be provided:
[PDF File]RECOMMENDED LRFD GUIDELINES FOR THE SEISMIC DESIGN OF ...
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SEISMIC DESIGN OF HIGHWAY BRIDGES M. Lee Marsh1, Ronald L. Mayes2, and Ian M. Friedland3 Abstract This paper provides an overview of the proposed seismic design provisions that have been developed to replace those currently in use throughout the United States. The proposed
[PDF File]PERFORMANCE-BASED SEISMIC DESIGN OF CONCRETE BRIDGES
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seismic design of bridges. Detailed steps of the procedure are presented, with emphasis on the required modifications that arise from the different structural configurationof bridges (e.g. intended plastic mechanism) and the possibility to use passive control devices.
[PDF File]SEISMIC DESIGN, OF MONOLITHIC BRIDGE ABUTMENTS
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The numerous case histories of damage or failure to bridges induced by abutment failure or displacement during earthquakes (1,2,3) have clearly demonstrated the need for careful attention to abutment design and detailing in seismic areas. In addition, the interaction between the bridge and the
[PDF File]Seismic Demands for Performance-Based Design of Bridges
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Seismic Demands for Performance-Based Design of Bridges Kevin Mackie Bozidar Stojadinovic University of California, Berkeley Department of Civil and Environmental Engineering PEER Annual Meeting January 25-26th, 2001 Project #: 3122000
[PDF File]EUROCODE 8 – PART 2. SEISMIC DESIGN OF BRIDGES
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during the design life of the bridge should incur minor damage during earthquakes with a high probability of occurrence. The non-collapse requirement for bridges under the design seismic event is more stringent than the relevant requirement for buildings, as it contains the continuation of emergency traffic. 2.2 Seismic behaviour of structures
[PDF File]Example 9 - Seismic Zone 1 Design 20190101
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seismic analysis for bridges in other seismic zones. Since the abutment bearings allow expansion in the longitudinal direction, the superstructure is restrained only by the 8 fixed bearings at Pier 2. Any passive soil resistance that may develop behind the abutments is ignored. The design connection
[PDF File]20-1 Seismic Design Methodology
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The seismic design criteria for Important Bridges and Ordinary Non-Standard Bridges shall be developed on a project-specific basis. The project specific criteria must establish the design parameters required to meet the level of performance outlined in Table 1. See MTD 20-11 for the project specific criteria approval process.
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