Author: Jie Luo
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: James M. LaFave
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 220

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Book Description

Author: James M. LaFave
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 220

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Book Description
The Illinois Department of Transportation (IDOT) commonly uses elastomeric bearings to accommodate thermal deformations in bridges, and these bearings have potential utility in seismic events. IDOT has developed an Earthquake Resisting System (ERS) using the displacement capacity of typical bearings to achieve a structural response similar to isolation. Project R27-70 was conducted to validate and calibrate the quasi-isolated ERS based on full-scale laboratory tests of bearings and computational models capturing full-bridge seismic response. This volume focuses on the analytical program but also contains retainer design recommendations.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: James M. LaFave
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 173

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Book Description

Author: W.F. Chen
Publisher: CRC Press
ISBN: 1420039784
Category : Technology & Engineering
Languages : en
Pages : 479

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Book Description
Mitigating the effects of earthquakes is crucial to bridge design. With chapters culled from the best-selling Bridge Engineering Handbook, this volume sets forth the principles and applications of seismic design, from the necessary geotechnical and dynamic analysis background to seismic isolation and energy dissipation, active control, and retrofit

Author: I. G. Buckle
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 324

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Book Description

Author: Keri Lynn Ryan
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 208

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Book Description
The need to maintain the functionality of critical transportation lifelines after a large seismic event motivates the strategy to design certain bridges for performance standards beyond the minimum required by bridge design codes. To design a bridge to remain operational, one may stiffen and strengthen the load carrying members to increase the capacity, or alternatively use response modification devices such as seismic isolators to shift the dynamic characteristics of the bridge, henceforth reducing the seismic demands. Seismic isolation systems are attractive because they are directly conducive to accelerated bridge construction techniques. The two strategies are compared for a typical Utah highway bridge, using a three-span, pre-stressed concrete girder bridge that crosses Legacy Highway as a case study example.

Author: Applied Technology Council
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 228

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Book Description
This document contains Guidelines for the seismic design of highway bridges. The Guidelines are the recommendations of a team of nationally recognized experts which included consulting engineers, academicians, State highway, and Federal agency representatives from throughout the United States. The Guidelines are comprehensive in nature and they embody several new concepts which are significant departures from existing design provisions. An extensive commentary documenting the basis for the Guidelines and an example demonstrating their use are included. A draft of the Guidelines was used to seismically redesign twenty-one bridges. Significant changes resulted from the redesigns and are reflected in this report. A summary of the redesigns is included.

Author:
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 336

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Book Description
This manual is an interim revision of the Federal Highway Administration (FHWA) publication "Seismic Retrofitting Guidelines for Highway Bridges", which was published in 1983 as report number FHWA/RD-83/007. It describes an evaluation procedure for retrofitting seismically deficient highway bridges and outlines various measures to upgrade these structures. The guidance provided in this manual is comprehensive in nature and nationally applicable to bridges in different seismic zones. It includes a revised preliminary screening procedure; two methods of detailed evaluation (which include the capacity/demand ratio method and the lateral strength method); and expanded sections on retrofit measures for bearings, columns, footings, foundations, and soils. A new section on the application of seismic isolation to bridge retrofit is also included. The manual is termed an interim revision because the subject matter is still evolving at this time.